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1 dual usb port power supply controller isl6185 the isl6185 usb power controller family provides fully independent overcurrent (oc) fault protection for two or more usb ports. this product family consists of sixteen individual functional product variants and three pack age options. it is operation rated for a nominal +2.5v to +5v range and is specified over the full commercial and industri al temperature ranges. each isl6185 type incorporates in a single package two 71m p-channel mosfet power switches for power control. each features internal current monito ring, accurate current limiting, and current limited delay to turn-off, for system supply protection along with control and communication i/o. the isl6185 family offers product variants with specified continuous output current levels of 0.6a, 1.1a, 1.5a or 1.8a; enable active high or low inputs; and latch off or automatic retry after overcurrent turn-off, making these devices well suited for many low-power applications. this family of ics is offered in an industry-standard soic pinout and also in the 70% smaller 3x3 dfn packages providing similar or enhanced performance in the smallest possible package. features ? 2.5v to 5v operating range ?71m integrated power p-channel mosfet switches ? continuous current options for 0.6a, 1.1a, 1.5a and 1.8a ? thermally insensitive 12ms of current limiting prior to turn-off ? output discharges with reverse current blocking when disabled ? latch-off or auto restart options ? 1a off-state supply current ? enable polarity options ? industry-standard pin for pin soic, and smaller dfn packages available applications ? usb 1, 2, 3 port power management ? low power (18w) electronic circuit limiting and breaker figure 1. typical application figure 2. normalized r ds(on) temperature characteristic curve d+ d- d+ d- +5v vin enable_2 fault_1 enable_1 fault_2 gnd out_1 out_2 isl6185 u s b c o n t r o l l e r vbus vbus usb port 1 usb port_2 usb port power 0.7 0.8 0.9 1.0 1.1 1.2 1.3 -40 -25 0 25 45 75 85 115 temperature (c) normalized r ds(on) june 27, 2011 fn6937.1 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas inc. 2010, 2011. all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners.
isl6185 2 fn6937.1 june 27, 2011 simplified block diagram gnd vin en_1 en_2 fault_2 out_2 out_1 fault_1 por channel 1 like channel 2 -v comp + - current and temp. monitoring, gate, delay & output control logic ordering information part number (notes 1, 2, 3) part marking en/en input v in = 5v maximum continuous iout (a) latch/auto retry temp. range (c) package (pb-free) pkg. dwg. # isl61851acbz 61851a cbz en 0.6 latch 0 to +70 8 lead soic m8.15 isl61851bcbz 61851b cbz en 0.6 retry 0 to +70 8 lead soic m8.15 isl61851ccbz 61851c cbz en 1.1 latch 0 to +70 8 lead soic m8.15 isl61851dcbz 61851d cbz en 1.1 retry 0 to +70 8 lead soic m8.15 isl61851ecbz 61851e cbz en 0.6 latch 0 to +70 8 lead soic m8.15 isl61851fcbz 61851f cbz en 0.6 retry 0 to +70 8 lead soic m8.15 isl61851gcbz 61851g cbz en 1.1 latch 0 to +70 8 lead soic m8.15 isl61851hcbz 61851h cbz en 1.1 retry 0 to +70 8 lead soic m8.15 isl61851icbz 61851i cbz en 1.5 latch 0 to +70 8 lead soic m8.15 isl61851jcbz 61851j cbz en 1.5 retry 0 to +70 8 lead soic m8.15 isl61851kcbz 61851k cbz en 1.5 latch 0 to +70 8 lead soic m8.15 isl61851lcbz 61851l cbz en 1.5 retry 0 to +70 8 lead soic m8.15 isl61852acrz 52ac en 0.6 latch 0 to +70 8 lead dfn l8.3x3j isl61852bcrz 52bc en 0.6 retry 0 to +70 8 lead dfn l8.3x3j isl61852ccrz 52cc en 1.1 latch 0 to +70 8 lead dfn l8.3x3j isl61852dcrz 52dc en 1.1 retry 0 to +70 8 lead dfn l8.3x3j isl61852ecrz 52ec en 0.6 latch 0 to +70 8 lead dfn l8.3x3j
isl6185 3 fn6937.1 june 27, 2011 isl61852fcrz 52fc en 0.6 retry 0 to +70 8 lead dfn l8.3x3j isl61852gcrz 52gc en 1.1 latch 0 to +70 8 lead dfn l8.3x3j isl61852hcrz 52hc en 1.1 retry 0 to +70 8 lead dfn l8.3x3j isl61852icrz 52ic en 1.5 latch 0 to +70 8 lead dfn l8.3x3j isl61852jcrz 52jc en 1.5 retry 0 to +70 8 lead dfn l8.3x3j isl61852kcrz 52kc en 1.5 latch 0 to +70 8 lead dfn l8.3x3j isl61852lcrz 52lc en 1.5 retry 0 to +70 8 lead dfn l8.3x3j isl61853acrz 53ac en 0.6 latch 0 to +70 10 lead dfn l10.3x3 isl61853bcrz 53bc en 0.6 retry 0 to +70 10 lead dfn l10.3x3 isl61853ccrz 53cc en 1.1 latch 0 to +70 10 lead dfn l10.3x3 isl61853dcrz 53dc en 1.1 retry 0 to +70 10 lead dfn l10.3x3 isl61853ecrz 53ec en 0.6 latch 0 to +70 10 lead dfn l10.3x3 isl61853fcrz 53fc en 0.6 retry 0 to +70 10 lead dfn l10.3x3 isl61853gcrz 53gc en 1.1 latch 0 to +70 10 lead dfn l10.3x3 isl61853hcrz 53hc en 1.1 retry 0 to +70 10 lead dfn l10.3x3 isl61853icrz 53ic en 1.5 latch 0 to +70 10 lead dfn l10.3x3 isl61853jcrz 53jc en 1.5 retry 0 to +70 10 lead dfn l10.3x3 isl61853kcrz 53kc en 1.5 latch 0 to +70 10 lead dfn l10.3x3 isl61853lcrz 53lc en 1.5 retry 0 to +70 10 lead dfn l10.3x3 isl61853mcrz 53mc en 1.8 latch 0 to +70 10 lead dfn l10.3x3 isl61853ncrz 53nc en 1.8 retry 0 to +70 10 lead dfn l10.3x3 isl61853ocrz 53oc en 1.8 latch 0 to +70 10 lead dfn l10.3x3 isl61853pcrz 53pc en 1.8 retry 0 to +70 10 lead dfn l10.3x3 isl61851aibz 61851a ibz en 0.6 latch -40 to +85 8 lead soic m8.15 isl61851bibz 61851b ibz en 0.6 retry -40 to +85 8 lead soic m8.15 isl61851cibz 61851c ibz en 1.1 latch -40 to +85 8 lead soic m8.15 isl61851dibz 61851d ibz en 1.1 retry -40 to +85 8 lead soic m8.15 isl61851eibz 61851e ibz en 0.6 latch -40 to +85 8 lead soic m8.15 isl61851fibz 61851f ibz en 0.6 retry -40 to +85 8 lead soic m8.15 isl61851gibz 61851g ibz en 1.1 latch -40 to +85 8 lead soic m8.15 isl61851hibz 61851h ibz en 1.1 retry -40 to +85 8 lead soic m8.15 isl61851iibz 61851i ibz en 1.5 latch -40 to +85 8 lead soic m8.15 isl61851jibz 61851j ibz en 1.5 retry -40 to +85 8 lead soic m8.15 isl61851kibz 61851k ibz en 1.5 latch -40 to +85 8 lead soic m8.15 isl61851libz 61851l ibz en 1.5 retry -40 to +85 8 lead soic m8.15 ISL61852AIRZ 52ai en 0.6 latch -40 to +85 8 lead dfn l8.3x3j isl61852birz 52bi en 0.6 retry -40 to +85 8 lead dfn l8.3x3j isl61852cirz 52ci en 1.1 latch -40 to +85 8 lead dfn l8.3x3j isl61852dirz 52di en 1.1 retry -40 to +85 8 lead dfn l8.3x3j isl61852eirz 52ei en 0.6 latch -40 to +85 8 lead dfn l8.3x3j ordering information (continued) part number (notes 1, 2, 3) part marking en/en input v in = 5v maximum continuous iout (a) latch/auto retry temp. range (c) package (pb-free) pkg. dwg. #
isl6185 4 fn6937.1 june 27, 2011 isl61852firz 52fi en 0.6 retry -40 to +85 8 lead dfn l8.3x3j isl61852girz 52gi en 1.1 latch -40 to +85 8 lead dfn l8.3x3j isl61852hirz 52hi en 1.1 retry -40 to +85 8 lead dfn l8.3x3j isl61852iirz 52ii en 1.5 latch -40 to +85 8 lead dfn l8.3x3j isl61852jirz 52ji en 1.5 retry -40 to +85 8 lead dfn l8.3x3j isl61852kirz 52ki en 1.5 latch -40 to +85 8 lead dfn l8.3x3j isl61852lirz 52li en 1.5 retry -40 to +85 8 lead dfn l8.3x3j isl61853airz 53ai en 0.6 latch -40 to +85 10 lead dfn l10.3x3 isl61853birz 53bi en 0.6 retry -40 to +85 10 lead dfn l10.3x3 isl61853cirz 53ci en 1.1 latch -40 to +85 10 lead dfn l10.3x3 isl61853dirz 53di en 1.1 retry -40 to +85 10 lead dfn l10.3x3 isl61853eirz 53ei en 0.6 latch -40 to +85 10 lead dfn l10.3x3 isl61853firz 53fi en 0.6 retry -40 to +85 10 lead dfn l10.3x3 isl61853girz 53gi en 1.1 latch -40 to +85 10 lead dfn l10.3x3 isl61853hirz 53hi en 1.1 retry -40 to +85 10 lead dfn l10.3x3 isl61853iirz 53ii en 1.5 latch -40 to +85 10 lead dfn l10.3x3 isl61853jirz 53ji en 1.5 retry -40 to +85 10 lead dfn l10.3x3 isl61853kirz 53ki en 1.5 latch -40 to +85 10 lead dfn l10.3x3 isl61853lirz 53li en 1.5 retry -40 to +85 10 lead dfn l10.3x3 isl61853mirz 53mi en 1.8 latch -40 to +85 10 lead dfn l10.3x3 isl61853nirz 53ni en 1.8 retry -40 to +85 10 lead dfn l10.3x3 isl61853oirz 53oi en 1.8 latch -40 to +85 10 lead dfn l10.3x3 isl61853pirz 53pi en 1.8 retry -40 to +85 10 lead dfn l10.3x3 isl61851eval1z 8 lead soic evaluation platform with isl61851a installed isl61852eval1z 8 lead dfn evaluation platform with isl61852h installed isl61853eval1z 10 lead dfn evaluation platform with isl61853i installed notes: 1. add ?-t*? suffix for tape and reel. please refer to tb347 for details on reel specifications. 2. these intersil pb-free plastic packaged products employ spec ial pb-free material sets, molding compounds/die attach materials , and 100% matte tin plate plus anneal (e3 termination finish , which is rohs compliant and compatible wi th both snpb and pb-free soldering opera tions). intersil pb- free products are msl classified at pb-free peak reflow temperat ures that meet or exceed the pb-free requirements of ipc/jedec j std-020. 3. for moisture sensitivity level (msl), please see device information pages for isl6185xxc (commercial version) and isl6185xxi (industrial version). for more information on msl please see techbrief tb363 . ordering information (continued) part number (notes 1, 2, 3) part marking en/en input v in = 5v maximum continuous iout (a) latch/auto retry temp. range (c) package (pb-free) pkg. dwg. #
isl6185 5 fn6937.1 june 27, 2011 pin configurations isl6185 (8 ld soic/dfn) top view isl6185 (10 ld dfn) top view 1 2 3 4 8 7 6 5 vin out1 out2 flt1 flt2 gnd (gnd) epad dfn only en1/en1 en2/en2 1 2 3 4 10 9 8 7 vin out1 out2 flt1 flt2 gnd (gnd) epad 5 6 vin nc en1/en1 en2/en2 pin descriptions pin number symbol description 8 ld soic/dfn 10 ld dfn 1 1 gnd ic ground reference. 2 2, 3 vin chip bias, controlled voltage input, undervoltage lock out (uvlo). vin provides chip bias voltage. at vin < 1.7v chip functionality is disabled, flt is active and floating, and out is held low. range 0v to 5.5v. 3, 4 4, 5 en1, en1 / en2, en2 enable/disable inputs, active high (en) and active low (en ) options enable the power switch. these inputs have internal 1m pull-off resistors. range 0v to vin. 5, 8 6, 10 flt2 flt1 overcurrent fault indicator. flt floats and is disabled until vin >v uvlo . this output is pulled low after the current limit time-out period has expired. fault is not signaled due to over-temperature shut down. range 0v to vin. 6, 7 7, 9 out2, out1 controlled supply output. upon an oc condition, i out is current limited. curren t limit response time is within 200s. this output remains in current limit fo r a nominal 12ms before being turned off either for the latch or auto retry versions. range 0v to vin. - 8 nc this pin is not electrically connected internally. pd (dfn only) pd epad thermal dissipation expose d pad range: connect to gnd.
isl6185 6 fn6937.1 june 27, 2011 absolute maximum rating s thermal information supply voltage (vin to gnd, note 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.5v en, fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vin out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . gnd - 0.3v to vin 0.3v output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . short circuit protected esd rating human body model (per mil-std-883 method 3015.7) . . . . . . . . . . 3kv machine model (per mil-std-883 method 3015.7) . . . . . . . . . . . . 300v latch up (tested per jesd-78b; class 2, level a) . . . . . . . . . . . . . . 100ma operating conditions commercial temperature range . . . . . . . . . . . . . . . . . . . . . . 0c to +70c industrial temperature range . . . . . . . . . . . . . . . . . . . . . . . -40c to +85c supply voltage range (typical). . . . . . . . . . . . . . . . . . . . . . . . . 2.3v to 5.5v thermal resistance (typical, note 4) ja (c/w) jc (c/w) 8 lead soic package (note 4) . . . . . . . . . . 120 n/a 8 lead 3x3 dfn package (notes 5, 6) . . . 48 6 10 lead 3x3 dfn package (notes 5, 6) . . 53 6 maximum junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +150c maximum storage temperature range . . . . . . . . . . . . . . -65c to +150c pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/ pbfree/pb-freereflow.asp caution: do not operate at or near the maximum ratings listed for extended periods of time. exposure to such conditions may adv ersely impact product reliability and result in failures not covered by warranty. notes: 4. ja is measured with the component mounted on a high effective thermal conductivity test board in free air. see tech brief tb379 for details. 5. ja is measured in free air with the componen t mounted on a high effective thermal conduc tivity test board with ?direct attach? fe atures. see tech brief tb379 . 6. for jc , the ?case temp? location is the center of the exposed metal pad on the package underside. 7. all voltages are relative to gnd, unless otherwise specified. electrical specifications v in = 5v, t a = t j , unless otherwise specified. boldface limits apply over the operating temperature range, 0c to +75c or -40c to +85c. symbol parameter test conditions min (note 8) typ max (note 8) units power switch r ds(on)_50 on-resistance at 5.0v (pulse tested) v in = 5v, i out = 0.1a, t a = t j = +25c - 71 87 m t a = t j = +85c - 110 m r ds(on)_33 on-resistance at 3.3v (pulse tested) v in = 3.3v, i out = 0.1a, t a = t j = +25c - 90 105 m t a = t j = +85c - 130 m r ds(on)_25 on resistance at 2.5v (pulse tested) v in = 2.5v, i out = 0.1a, t a = t j = +25c - 114 127 m t a = t j = +85c - 150 m v out_dis disabled output voltage v in = 5v, switch disabled, 50a load - 50 70 mv r out_pu output pull-down resistor v in = 5v, switch disabled 8 9.6 12 k t r v out rise time r l = 10 , c l = 10f, 10% to 90% - 100 - s t f slow v out turn-off fall time r l = 10 , c l = 10f, 90% to 10% - 200 - s t f_fast fast v out turn-off fall time r l = 1 , c l = 10f, 80% to 20% - 23 - s current control i out_cont_5 maximum continuous current, v in = 5v. guaranteed by itrip minimum specification. isl6185xa,b,e,f - 0.6 a i out_cont_5 isl6185xc,d,g,h - 1.1 a i out_cont_5 isl6185xi,j,k,l - 1.5 a i out_cont_5 isl61853m,n,o,p (10 ld dfn) - 1.8 a i out_cont_3 maximum continuous current, v in = 3.3v. guaranteed by itrip minimum specification. isl6185xa,b,e,f - 0.6 a i out_cont_3 isl6185xc,d,g,h - 0.9 a i out_cont_3 isl61851i,j,k,l (soic) - 1.3 a i out_cont_3 isl61852, isl61853 (dfn) - 1.5 a
isl6185 7 fn6937.1 june 27, 2011 i out_cont_2 maximum continuous current, v in = 2.5v isl6185xa,b,e,f - 0.6 - a i out_cont_2 isl61851c,d,g,h,i,j,k,l (soic) - 0.9 - a i out_cont_2 isl61852, isl61853 c,d,g,h (dfn) - 1 - a i out_cont_2 isl61853i,j,k,l (10 ld dfn) - 1 - a i out_cont_2 isl61853m,n,o,p (10 ld dfn) - 1 - a i trip_5 trip current, v in = 5v isl6185xa,b,e,f 0.70 1.02 1.52 a i trip_5 isl6185xc,d,g,h 1.15 1.45 1.95 a i trip_5 isl6185xi,j,k,l 1.55 1.82 2.25 a i trip_5 isl61853m.n,o,p 1.85 1.99 2.45 a i trip_3 trip current, v in = 3.3v isl6185xa,b,e,f 0.65 0.86 1.20 a i trip_3 isl6185xc,d,g,h 0.95 1.25 1.60 a i trip_3 isl6185xi,j,k,l 1.35 1.60 1.85 a i trip_3 isl61853m.n,o,p 1.55 1.89 2.25 a i trip_2 trip current, v in = 2.5v isl6185xa,b,e,f - 0.65 - a i trip_2 isl6185xc,d,g,h - 1- a i trip_2 isl6185xi,j,k,l - 1.2 - a i trip_2 isl61853m.n,o,p - 1.6 - a i lim_5 current limit, v in = 5v isl6185xa,b,e,f, v in - v out = 1v 0.50 0.65 0.78 a i lim_5 isl6185xc,d,g,h, v in - v out = 1v 0.98 1.14 1.28 a i lim_5 isl6185xi,j,k,l, v in - v out = 1v 1.30 1.55 1.72 a i lim_5 isl61853m,n,o,p, v in - v out = 1v 1.52 1.83 2.20 a i lim_3 current limit, v in = 3.3v isl6185xa,b,e,f, v in - v out = 1v 0.45 0.63 0.75 a i lim_3 isl6185xc,d,g,h, v in - v out = 1v 0.90 1.10 1.26 a i lim_3 isl6185xi,j,k,l, v in - v out = 1v 1.25 1.50 1.68 a i lim_3 isl61853m,n,o,p, v in - v out = 1v 1.48 1.78 2.05 a i lim_2 current limit, v in = 2.5v isl6185xa,b,e,f, v in - v out = 1v 0.47 0.61 0.74 a i lim_2 isl6185xc,d,g,h, v in - v out = 1v 0.90 1.05 1.17 a i lim_2 isl6185xi,j,k,l, v in - v out = 1v 1.15 1.37 1.58 a i lim_2 isl61853m,n,o,p, v in - v out = 1v 1.3 1.63 1.90 a i sc_5 short circuit current, v in = 5v isl6185xa,b,e,f, v out = 0v 0.60 0.80 1.00 a i sc_5 isl6185xc,d,g,h, v out = 0v 1.00 1.27 1.55 a i sc_5 isl6185xi,j,k,l, v out = 0v 1.15 1.61 1.85 a i sc_5 isl61853m,n,o,p, v out = 0v 1.20 1.70 2.5 a i sc_3 short circuit current, v in = 3.3v isl6185xa,b,e,f, v out = 0v 0.35 0.48 0.60 a i sc_3 isl6185xc,d,g,h, v out = 0v 0.65 0.80 0.95 a i sc_3 isl6185xi,j,k,l, v out = 0v 0.70 1.06 1.25 a i sc_3 isl61853m,n,o,p, v out = 0v 0.90 1.24 1.50 a electrical specifications v in = 5v, t a = t j , unless otherwise specified. boldface limits apply over the operating temperature range, 0c to +75c or -40c to +85c. (continued) symbol parameter test conditions min (note 8) typ max (note 8) units
isl6185 8 fn6937.1 june 27, 2011 i sc_2 short circuit current, v in = 2.5v isl6185xa,b,e,f, v out = 0v - 0.61 a i sc_2 isl6185xc,d,g,h, v out = 0v - 1.06 - a i sc_2 isl6185xi,j,k,l, v out = 0v - 1.30 - a i sc_2 isl61853m,n,o,p, v out = 0v - 1.39 - a tsett ilim oc to limit settling time v in /r l = 2i lim , c l = 10f to within 10% of i lim -200- s tsett ilim_sev severe oc to limit settling time v in /r l = 4i lim , c l = 10f to within 10% of i lim -30- s t cl current limit duration i out = i lim 9.2 12 15 ms t rty automatic retry period 0.80 1 1.35 s i/o parameters vfault_lo fault output voltage fault i out = 10ma - - 0.4 v ifault fault leakage -5 - a venr_5 en / en rising threshold v in = 5v 1.5 1.8 2 v hys_venr_5 en / en rising threshold hysteresis v in = 5v 80 140 175 mv venr_3 en / en rising threshold v in = 3.3v 1.0 1.3 1.6 v hys_venr_3 en / en rising threshold hysteresis v in = 3.3v 58 80 120 mv venr_2 en / en rising threshold v in = 2.5v 0.95 1.1 1.3 v hys_venr_2 en / en rising threshold hysteresis v in = 2.5v 30 70 110 mv ren_h enable pull-down resistor enable asserted high options 0.6 1 1.55 m ren_l enable pull-up resistor enable asserted low options 0.6 1 1.55 m t on enable to output turn-on time r l = 10 , c l = 10f, enable 50% to output 90% - 0.1 - ms t off enable to output turn-off time r l = 10 , c l = 10f, enable 50% to output 10% - 0.25 - ms bias parameters i vdd enabled v in current switches closed, output = open 50 75 a i vdd disabled v in current switches open, output = open - 2 5 a v uvlo rising por threshold v in rising to functional operation 1.7 2.1 2.3 v i vr reverse blocking leakage current v in = 0v, v out = 5v - 2 a temp_dis over-temperature disable - 150 - c temp_hys over-temperature hysteresis - 20 - c note: 8. compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. electrical specifications v in = 5v, t a = t j , unless otherwise specified. boldface limits apply over the operating temperature range, 0c to +75c or -40c to +85c. (continued) symbol parameter test conditions min (note 8) typ max (note 8) units
isl6185 9 fn6937.1 june 27, 2011 introduction the isl6185 is a dual channel fully independent overcurrent (oc) fault protection ic for the +2 .5v to +5v environment. each isl6185 incorporates in a single package two 85m p-channel mosfet power switches for power control. independent enabling inputs and fault reporting outputs compatible with 2.5v to 5v logic allow for external control and reporting. this device features integrated power switches with current monitoring, accurate current limiting, reverse bias protection and current limited timed delay to turn-off for system reliability. see figures 13 through 28 for typical operational waveforms including both under-current and over-current situations. the isl6185 offers current sense and limiting, with v in =5v guaranteed continuous current product variants of 0.6a, 1.1a, 1.5a and 1.8a, making these devices well suited for a myriad of usb and other low power (9w max) port power management applications and configurations. the isl6185 also provides thermally insensitive timed oc turn-off and fault notification. this isolates and protects the voltage bus in the event of a peripheral oc event or short circuit event, independent of the adjoining switch?s electrical or the ambient thermal condition. the isl6185 undervoltage lockout feature prevents turn-on of the outputs unless the correct enable state and v in > v uvlo are present. during initial turn -on, the isl6185 prevents fault reporting by blanking the fault signal. during operation, once an oc condition is detected, the output is current limited for t cl to allow transient oc conditions to pass. if still in current limit af ter the current limit period has elapsed, the output is turned of f, and the fault is reported by pulling the corresponding fault output low. on the latch-off options, after turn-off, both the output and the fault signal are latched low until reset by the enab le signal being de-asserted or until a por occurs. at this time, the fault signal clears, and the switch is ready to be turned back on. on the auto restart options, the isl6185 attempts to periodically turn on the output, as long as th e enable is asserted. when disabled, the isl6185 has a low quiescent supply current and an output-to-input reverse current flow blocking capability. the isl6185 family is provided with enable polarity options and an industry-standard 8 lead soic pinout, along with two versions in the 70% smaller 3x3 dfn. the 8 ld dfn package offers the same performance as the 8 ld soic, whereas the 10 ld dfn offers higher current capability in the smallest possible package because of lower package electrical and thermal resistance. functional description power on preset (por) the isl6185 por feature inhibits device functionality when vin < v uvlo . reverse polarity protection in any event in which the power switch is disabled and v out >v in, there will be no output-to-input current flow, nor will the output voltage ap pear on the input. soft-start upon enable, the switch passes a constant current to the load. the voltage on the vout pin ramps up according the equation, i lim /c out (v/s). resistive or active load slows the v out ramp-up toward the top of its curve. fault blanking on start-up during initial turn-on, the isl61 85 prevents nuisance faults from being reported to the system controller by blanking the fault signal until the internal fet is fully enhanced. current trip and limiting levels the isl6185 provides integrated current sensing in the mosfet that allows for rapid control of oc events. once an oc condition is detected, the isl6185 goes into its current limiting (cl) control mode. the isl6185 is variant specified to allow a continuous current (i cont ) operation of 0.6a, 1.1a, 1.5a or 1.8a. as the current increases past its continuo us current rating, it will reach a level that causes the device to enter its current limit mode; that is, the current trip level. the current trip level is in all cases adequately above the i cont rating so as not to cause unintended false faults. the current limit is specified at v out = v in - 1v to test a known representative condition and is featured at a nominal value slightly higher than the continuous current rating. the speed of this current limiting control is inversely related to the magnitude of the oc fault. thus, a hard overcurrent is more quickly pulled to its limiting value than a marginal oc condition. over-temperature shutdown although the isl6185 has an over-temperature shutdown and lockout feature, because of the 12ms timed shutdown, the thermal shutdown is likely to be invoked only in extremely high ambient temperatures. the over-temperature protection invokes and disables the switch turn-on operation once the die temperature is ~+140c. it turns off an already on switch at ~+150c and releases the part to operation once the die temperature falls to ~+120c.
isl6185 10 fn6937.1 june 27, 2011 turn-off time delay during operation, once an oc condition is detected, the output is current limited for ~12ms to allow transient oc conditions to pass. if still in current limit an d after the current limit period has elapsed, the output is turned off, and the fault is reported by pulling the corresponding fault low. the internal 12ms timer starts upon current limiting and is independent of ambient or ic thermal conditions, thus provid ing more consistent operation over the entire temperature range. latch-off restart/auto-restart start after turn-off, with the latch-off options, both the output and the fault signal are latched low until they are reset by the enable signal being de-asserted. at this time, the fault signal clears, and the ic is ready for enable to assert. on the auto restart options, the isl6185 attempts to periodically turn-on the output at approximately 1s interv als, as long as the enable is asserted. if the oc condition remains indefinitely, the fault indication and the restart attempts also continue until the thermal protection feature is invoked, thus increasing the restart period. active output pull-down another isl6185 feature is the 10k active pull-down on the outputs to <60mv above gnd when the device is disabled, thus ensuring discharge of the load. typical performance curves figure 3. switch on-resistance at 0.5a figure 4. normalized switch resistance figure 5. 0.6a continuous current characteristics figure 6. 1.1a continuous current characteristics 150 140 130 120 110 100 90 80 70 60 50 -40-25 0 25457585115 temperature (c) r ds(on) @ 0.5a (m ? ) v in = 2.5v v in = 3.3v v in = 5v 0.7 0.8 0.9 1.0 1.1 1.2 1.3 -40-25 0 25457585115 temperature (c) normalized r ds(on) 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 -40-25 0 25457585115 temperature (c) output current (a) 5v i sc 5v i lim 3.3v i lim 3.3v i sc 5v i trip 3.3v i trip 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 -40-25 0 25457585115 temperature (c) output current (a) 3.3v i trip 5v i sc 5v i lim 3.3v i lim 3.3v i sc 5v i trip
isl6185 11 fn6937.1 june 27, 2011 figure 7. 1.5a continuous current characteristics f igure 8. 1.8a continuous current characteristics figure 9. limiting current 3 sigma, v in = 5v figure 10. limiting current 3 sigma, v in = 5v figure 11. limiting current 3 sigma, v in = 5v figure 12. limiting current 3 sigma, v in = 5v typical performance curves (continued) 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -40-25 0 25457585115 temperature (c) output current (a) 3.3v i trip 5v i sc 3.3v i lim 3.3v i sc 5v i trip 5v i lim 1.0 1.2 1.4 1.6 1.8 2.0 2.2 -40-25 0 25457585115 temperature (c) output current (a) 3.3v i trip 3.3v i lim 3.3v i sc 5v i trip 5v i lim 5v i sc 0.50 0.55 0.60 0.65 0.70 0.75 -40-25 0 25457585115 i l i m i t 3 s i g m a temperature (c) +3 sigma typical -3 sigma 0.6a continuous i out version 1.00 1.05 1.10 1.15 1.20 1.25 -40-25 0 25457585115 i l i m i t 3 s i g m a temperature (c) +3 sigma typical -3 sigma 1.1a continuous i out version 1.35 1.40 1.45 1.50 1.55 1.60 1.65 -40-25 0 25457585115 i l i m i t 3 s i g m a temperature (c) +3 sigma typical -3 sigma 1.5a continuous i out version 2.00 1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 -40-25 0 25457585115 temperature (c) +3 sigma typical -3 sigma 1.8a continuous i out version i l i m i t 3 s i g m a
isl6185 12 fn6937.1 june 27, 2011 figure 13. v out turn-on/rise time vs c load . v in = 5v, r l = 10 figure 14. v out turn-off/fall time vs c load . v in = 5v, r l = 10 figure 15. latch-off vs c load figure 16. i lim waveform figure 17. oc ramp rate i lim waveforms figure 18. peak current settling times typical performance curves (continued) c l =1f enable c l = 100f c l = 10f vout 1v/div v out enable c l = 10f c l = 100f c l =1f 1v/div v out c l =10f c l = 100f c l =1f 1v/div flt v out i in 0.6a i cont variant i in 2a/div 0.72a current limit 0.53a load current 0.08a/ms 0.6a/ms 6a/ms 0.6a i cont variant 0.66a current limit 0.56a load current 2a oc 27s 1a oc 57s 0.5a oc 200s 0.6a i cont variant
isl6185 13 fn6937.1 june 27, 2011 figure 19. turn-on into a short figure 20. turn-on into momentary oc figure 21. isl6185 retry function figure 22. i lim waveform figure 23. v in = 2.5v turn-on into 2.2 figure 24. v in = 5v turn-on into 2.7 typical performance curves (continued) enable v out fault 0.6a i cont variant limited to 0.64a i in enable v out fault i in 0.6a i cont variant v out flt i in v out flt i in 1.1a i cont variant enable v out fault i in 1.8a i cont variant enable v out fault iin 1.8a i cont variant
isl6185 14 fn6937.1 june 27, 2011 figure 25. turn-on into a short figure 26. turn-on 2nd output to full load figure 27. isl6185 retry function figure 28. ilim waveform figure 28. propagation delay and output transition times typical performance curves (continued) enable v out fault i in 1.8a i cont variant limited to 1.7a enable v out fault i in ch1 on ch1 and ch2 on (1.8a) (3.6a total i in ) v out flt i in v out flt i in 1.1a i cont variant test circuits figure 29a. r ds(on) figure 29b. current limiting figure 29. dc test circuit 5v output isl6185 en vin flt 10k 10 10f out v - + r ds(on) = v/(vout/10w) 5v output isl6185 en vin flt 10k 10 10f out r l sized for desired oc level r l
isl6185 15 fn6937.1 june 27, 2011 figure 30. transient test circuit figure 31. transient waveform measurement points test circuits (continued) 5v output isl6185 en vin flt 10k 10 10f 0-v in out vin 0v 0.5vin 0.5vin vin gnd output t on t off output t r vin -gnd 90% 90% t f 10% 10% en 90% 10% isl6185xeval1z schematic and photo figure 32a. isl6185xeval schematic fig ure 32b. isl61851eval1z board photo figure 32. isl6185xeval1z schematic and isl61851eval1z photograph note: exposed pad on dfn packages only u1 isl6185 r1 10k agnd v+ en1 en2 c1 2.2f r2 10k flt1 flt2 out1 out2 r3 c2 10f agnd flt1 out1 out2 flt2 r4 c3 10f 10 10 a a a a a v+
isl6185 16 fn6937.1 june 27, 2011 application information using the isl6185xeval1z platform general and biasing information there are three evaluation platforms for the isl6185 family. there is one platform for each package style, each with a different continuous output current level and a mix of enable polarity and output retry or latch options. see page 4, at the end of the ?ordering information? table, for information on the standard available evaluation bo ard options. figure 32a shows the common schematic for all thre e evaluation boards. see ?pin configurations? on page 5 for details and differences. the evaluation platform is biased and monitored through numerous labeled test points. see table 1 for test point assignments and descriptions. upon proper bias of the evaluati on platform and correct enabling of the ic, the isl6185 will have a nominal v in /10 load current that is lower than the continuous current rating passing through each enabled switch. see figures 13 and 14 for typical isl6185 turn-on and turn-off waveforms. external current loading in excess of the trip current level for the particular part being evaluated will result in the isl6185 entering the current limiting mode. figure 16 illustrates the current limiting mode for the isl6185 pr oduct variants with 0.6a of continuous load current rating. the scope shot shows current limiting for ~12ms before it is turned off and the fault signal is asserted. application considerations the application considerations fo r the isl6185 family are widely accepted best industry practices. good decoupling practices on the vin pin must be followed: placement close to the ic, with at least 2.2f recommended. it is recommended to reduce the input and output inductance to the isl6185 with good pcb layout practices. when designing with the 1.5a and 1.8a versions in an implementation in which the output may be unloaded (open) while the isl6185 is turned on, a minimum of 4.7f of capacitive output load is recommended to prevent high dv/dt from unnecessarily ac tivating the surge/esd control circuit. the isl6185 provides several continuous current rated devices specified at v in = 5v; these are 0.6a, 1.1a, 1.5a and 1.8a options that are capable over the entire temperature extreme. at v in = 3.3v, the current capability is degraded, and the isl6185 is specified at 0.6a, 1.1a, 1.3a and 1.5a, respectively. at v in = 2.5v, there are no minimum specifications, but a typical value is provided for +25c operation (see ?electrical specifications? on page 6). this degraded capability is due to the higher r ds(on) of the fet switch at the lower bias voltage. the enhanced thermal characteristics and increased number of bond wires allow the 10 ld dfn to have a higher current capability than either th e 8 ld soic or the dfn. table 1. isl61851eval1z test point assignments tp name description gnd eval board and ic gnd v+ eval board and ic bias en1 enable switch 1 en2 enable switch 2 flt2 switch 2 fault out2 switch out 2 out1 switch out 1 flt1 switch 1 fault table 2. isl6185xeval1z board component listing component designator component function component description u1 isl6185 intersil, isl6185 r3 - r4 output load resistors 10 , 5%, 3w r1 - r2 flt output pull-up resistor 10k , 0805 c1 decoupling capacitor 2.2f, 0805 c2 - c3 load capacitor 10f 16v electrolytic, radial lead
isl6185 17 intersil products are manufactured, assembled and tested utilizing iso9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn6937.1 june 27, 2011 for additional products, see www.intersil.com/product_tree products intersil corporation is a leader in the design and manufacture of high-performance analog semico nductors. the company's product s address some of the industry's fastest growing markets, such as , flat panel displays, cell phones, handheld products, and noteb ooks. intersil's product families address power management and analog sign al processing functions. go to www.intersil.com/products for a complete list of intersil product families. *for a complete listing of applications, re lated documentation and related parts, plea se see the respective device information pages on intersil.com for isl6185xxc (commercial version) and isl6185xxi (industrial version). to report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff fits are available from our website at http://rel.intersil.com/reports/search.php revision history the revision history provided is for inform ational purposes only and is believed to be accurate, but not warranted. please go t o web to make sure you have the latest rev. date revision change 6/14/2011 fn6937.1 pg. 4: ordering information: added part numbers of parts installed on evaluation boards to description column. pg. 7: electrical specifications table: - for ?maximum continuous cu rrent, vin = 2.5v,? changed ?isl61851c,d,g,h (soic)? to ?isl61851c,d,g,h,i,j,k,l (soic)? - for ?trip current, v in = 5v?, changed ?isl61853i,j,k,l? to ?isl 6185xi,j,k,l?. for ?isl61853m.n,o,p? changed max from ?2.15? to ?2.45?. - for ?trip current, vin = 3.3v? and ?trip current, vin = 2.5v? changed ?isl61853i,j,k,l? to ?isl6185xi,j,k,l?. - for ?current limit, vin = 5v?, ?current limit, vi n = 3.3v?, and ?current limit, vin = 2.5v?, changed ?isl61853i,j,k,l, vin - vout = 1v? to ?isl6185xi,j,k,l, vin - vout = 1v? - for ?short circuit current, vin = 5v?, ?short circuit cu rrent, vin = 3.3v? and ?short circuit current, vin = 2.5v? changed ?isl61853i,j,k,l, vout = 0v? to ?isl6185xi,j,k,l, vout = 0v? pg. 8: electrical specifications table: for the i/o pa rameters venr_5, hys_venr_5, venr_3, hys_venr_3, venr_2, and hys_venr_2: changed "enable rising threshold" an d "enable rising threshold hysteresis" to "en / en rising threshold" and "en / en rising threshold hysteresis," for clarity. pg. 8: electrical specifications table: removed uv hys , por hysteresis specification. pg. 20: replaced rev. 1 of m8.15 package outline draw ing, dated 6/05, with rev 2 (latest version), dated 11/10. applied current intersil datasheet template to document. 10/22/10 fn6937.0 initial release.
isl6185 18 fn6937.1 june 27, 2011 package outline drawing l8.3x3j 8 lead dual flat no-lead plastic package rev 0 9/09 located within the zone indicated. the pin #1 identifier may be unless otherwise specified, tolerance : decimal 0.05 tiebar shown (if present) is a non-functional feature. the configuration of the pin #1 identifier is optional, but must be between 0.15mm and 0.30mm from the terminal tip. dimension applies to the metallized terminal and is measured dimensions in ( ) for reference only. dimensioning and tolerancing conform to amse y14.5m-1994. 6. either a mold or mark feature. 3. 5. 4. 2. dimensions are in millimeters. 1. notes: bottom view detail "x" typical recommended land pattern top view side view c 0 . 2 ref 0 . 05 max. 0 . 00 min. 5 3.00 a b 3.00 (4x) 0.15 6 pin 1 index area pin #1 index area 6x 0.65 1.64 +0.10/ - 0.15 8 1 8x 0.400 0.10 6 max 1.00 see detail "x" 0.08 0.10 c c c ( 2.80 ) (1.64) ( 8 x 0.30) ( 8x 0.60) ( 2.38 ) ( 1.95) 2.38 0.10 8x 0.30 a mc b 4 2x 1.950 +0.10/ - 0.15 (6x 0.65) 4 5 pin 1
isl6185 19 fn6937.1 june 27, 2011 package outline drawing l10.3x3 10 lead dual flat package (dfn) rev 6, 09/09 located within the zone indicated. the pin #1 indentifier may be unless otherwise specified, tolerance : decimal 0.05 tiebar shown (if present) is a non-functional feature. the configuration of the pin #1 id entifier is optional, but must be between 0.18mm and 0.30mm from the terminal tip. lead width applies to the metallized terminal and is measured dimensions in ( ) for reference only. dimensioning and tolerancing conform to amse y14.5m-1994. 6. either a mold or mark feature. 3. 5. 4. 2. dimensions are in millimeters. 1. notes: bottom view detail "x" side view typical recommended land pattern top view (4x) 0.10 index area pin 1 pin #1 index area c seating plane base plane 0.08 see detail "x" c c 5 6 6 a b 0.10 c 1 package 1.00 0.20 8x 0.50 2.00 3.00 (10x 0.23) (8x 0.50) 2.00 1.60 (10 x 0.55) 3.00 0.05 0.20 ref 10 x 0.23 10x 0.35 1.60 outline max (4x) 0.10 ab 4 c m 0.415 0.23 0.35 0.200 2 4
isl6185 20 fn6937.1 june 27, 2011 package outline drawing m8.15 8 lead narrow body small outline plastic package rev 3, 3/11 detail "a" top view index area 123 -c- seating plane x 45 notes: 1. dimensioning and tolerancing per ansi y14.5m-1982. 2. package length does not include mold flash, protrusions or gate burrs. mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. 3. package width does not include interlead flash or protrusions. interlead flash and protrusions shall not exceed 0.25mm (0.010 inch) per side. 4. the chamfer on the body is optional. if it is not present, a visual index feature must be located within the crosshatched area. 5. terminal numbers are shown for reference only. 6. the lead width as measured 0.36mm (0.014 inch) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024 inch). 7. controlling dimension: millimeter. co nverted inch dimensions are not necessarily exact. 8. this outline conforms to jedec publication ms-012-aa issue c. side view ?a side view ?b? 1.27 (0.050) 6.20 (0.244) 5.80 (0.228) 4.00 (0.157) 3.80 (0.150) 0.50 (0.20) 0.25 (0.01) 5.00 (0.197) 4.80 (0.189) 1.75 (0.069) 1.35 (0.053) 0.25(0.010) 0.10(0.004) 0.51(0.020) 0.33(0.013) 8 0 0.25 (0.010) 0.19 (0.008) 1.27 (0.050) 0.40 (0.016) 1.27 (0.050) 5.20(0.205) 1 2 3 4 5 6 7 8 typical recommended land pattern 2.20 (0.087) 0.60 (0.023)

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