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mp62340-1/mp62341-1 3.3v/5v, dual-channel 1a current-limited power distribution switches with output discharge mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 1 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp62340-1/mp62341-1 power distribution switch features internal current limiting to prevent damage to host devices due to faulty load conditions. the mp62340-1/mp62341-1 analog switch has 85m ? on-resistance and operates from 2.7v to 5.5v input. it is available with guaranteed current limits, making it ideal for load switching applications. the mp62340- 1/mp62341-1 has built-in protection for both over current and increased thermal stress. for over current, the device will limit the current by changing to a constant current mode. as the temperature increases as a result of short circuit, then the device will shut off. the device will recover once the device temperature reduces to approx 120 c. the mp62340-1/mp62341-1 involves discharge function that provides a resistive discharge path for the external output capacitor when the part is disabled. the mp62340-1/mp62341-1 is available in 8- pin msop package with exposed pad and soic package without exposed pad. features ? 1a continuous current ? accurate current limit ? output discharge function ? 2.7v to 5.5v supply range ? 140 a quiescent current ? 85m ? mosfet ? thermal-shutdown protection ? under-voltage lockout ? 8ms flag deglitch time ? no flag glitch during power up ? reverse current blocking ? active high & active low options ? ul recognized: e322138 applications ? pdas ? portable gps ? notebook pc ? set-top-box ? telecom and network systems ? pc card hot swap ? usb power distribution ?mps? and ?the future of analog ic technology? are trademarks of monolithic power systems, inc. typical application out2 mp62340-1/ mp62341-1 out1 1 2 3 4 5 6 7 8 +5v to usb controller output 1 output 2 flag1 flag2 en1* in gnd en2* * en is active high for mp62341-1
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 2 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information part number enable switch maximum continuous load current typical short- circuit current @ t a =25c package top marking temperature mp62340ds-1* soic8 m62340-1 MP62340DH-1 active low msop8e 62340 mp62341ds-1 soic8 m62341-1 mp62341dh-1 active high dual 1a 1.5a msop8e 62341 ?40 c to +85 c * for tape & reel, add suffix ?z (e.g. mp62340ds?1?z). for rohs compliant packaging, add suffix ?lf (e.g. mp62340ds?1?lf?z) package reference gnd in en1* en2* flag1 out1 out2 flag2 1 2 3 4 8 7 6 5 top view soic8 1 2 3 4 8 7 6 5 top view gnd in en1* en2* flag1 out1 out2 flag2 exposed pad on backside connect to gnd msop8e mp62340-1/mp62341-1 dual-channel (* en is active high for mp62341-1) absolute maxi mum ratings (1) in .................................................-0.3v to +6.0v en, flag, out to gnd ..............-0.3v to +6.0v continuous power dissipation (ta = +25c) (2) msop8e.................................................... 2.3w soic8..................................................... 1.4w junction temperature ...............................150c lead temperature ....................................260c storage temperature............... ? 65c to +150c operating temperature.............. ? 40c to +85c thermal resistance (3) ja jc soic8..................................... 90 ...... 42... c/w msop8e................................. 55 ...... 12... c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to ambient thermal resistance ja, and the ambient temperature t a. the maximum allowable continuous power dissipation at any ambient temperature is calculated by pd (max) = (t j (max) - t a )/ ja . exceeding the maximum allowable powe r dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) measured on jesd51-7 4-layer pcb.
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 3 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. electrical characteristics (4) v in =5v, t a =+25c, unless otherwise noted. parameter condition min typ max units in voltage range 2.7 5.5 v supply current one channel enabled, i out =0, one switch on 90 120 a supply current both channels enabled, i out =0, both switches on 140 160 a shutdown current device disable, v out =float, v in =5.5v 1 a off switch leakage device disable, v in =5.5v 1 a current limit 1.1 1.5 2.2 a trip current current ramp (slew rate 100a/s) on output 1.7 2.4 a under-voltage lockout rising edge 1.95 2.65 v under-voltage hysteresis 250 mv fet on resistance i out =100ma (-40c t a +85c) 85 130 m ? en input logic high voltage 2 v en input logic low voltage 0.8 v flag output logic low voltage i sink =5ma 0.4 v flag output high leakage current v in =v flag =5.5v 1 a thermal shutdown 140 c thermal shutdown hysteresis 20 c v in =5.5v, c l =1f, r l =5.5 ? 0.9 ms v out rising time, tr (5) v in =2.7v, c l =1f, r l =5.5 ? 1.7 ms v in =5.5v, c l =1f, r l =5.5 ? 0.5 ms v out falling time, tf (6) v in =2.7v, c l =1f, r l =5.5 ? 0.5 ms turn on time, ton (7) c l =100f, rl=5.5 ? 3 ms turn off time, toff (8) c l =100f, rl=5.5 ? 10 ms discharge resistance 100 ? flag deglitch time 4 8 15 ms en input leakage 1 a reverse leakage current v out =5.5v, v in =gnd 0.2 a notes: 4) production test at +25c. specificat ions over the temperature range are guaranteed by design and characterization. 5) measured from 10% to 90% output signal. 6) measured from 90% to 10% output signal. 7) measured from 50% en signal to 90% output signal. 8) measured from 50% en signal to 10% output signal.
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 4 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions soic8 msop8e name description 1 gnd, exposed pad (msop8e) ground. msop8e exposed pad must be connected to a ground plane for optional thermal performance. 2 in input voltage. accepts 2.7v to 5.5v input. 3 en1 active low: (mp62340-1), active high: (mp62341-1) 4 en2 active low: (mp62340-1), active high: (mp62341-1) 5 flag2 in-to-out2 over-current, active -low output flag. open-drain. 6 out2 in-to-out2 power-di stribution switch output. 7 out1 in-to-out1 power-distribution switch output 8 flag1 in-to-out1 over-current, active -low output flag. open-drain. typical performanc e characteristics t a = +25oc, unless otherwise noted. v i (en x ) vi(enx) v o (out x ) out x rl cl v o (out x ) vo(outx) 50% 50% 50% 50% 90% 90% 90% 90% 10% 10% 10% 10% t on t r t f ton t off toff voltage waveforms test circuit figure 1?test circuit and voltage waveforms
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 5 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5v, c l =1 f,ta=25 , for only one channel unless otherwise noted. input voltage (v) input voltage (v) input voltage (v) input to output voltage vs. load current current limit vs. input voltage supply current, output enable vs. input voltage static drain-source on-state resistance variation vs. ambient temperature i o =0.1a static drain-source on-state resistance vs. input voltage i o =1a input voltage (v) input voltage (v) 1 1.5 2 2.5 3 3.5 2.5 3 3.5 4 4.5 5 5.5 6 turn on delay (ms) 1 1.1 1.2 1.3 1.4 1.5 2.5 3 3.5 4 4.5 5 5.5 6 turn off delay (ms) 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2.5 3 3.5 4 4.5 5 5.5 6 rise time(ms) 30 35 40 45 50 55 60 65 2.5 3 3.5 4 4.5 5 5.5 6 2.5 3 3.5 4 4.5 5 5.5 6 fall time (us) 60 70 80 90 100 110 supply current (ua) -25 -20 -15 -10 -5 0 5 10 15 20 25 -40 -20 020 406080 ambient temperature ( o c) static drain-source on-state resistance variation (%) 70 80 90 100 110 120 130 140 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) static drain-source on-state 0 20 40 60 80 100 120 140 0 0.2 0.4 0.6 0.8 1 output current (a) input to output voltage (mv) vin=5.5v vin=5v vin=4v vin=2.7v vin=3.3v 1.4 1.5 1.6 1.7 1.8 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) current limit (a)
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 6 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in =5v, c l =1 f,ta=25 , for only one channel, unless otherwise noted. v out 5v/div i out 1a/div 100us/div threshold trip current with ramped load on enabled device short circuit current, device enabled into short 4ms/div 400us/div en 5v/div flag 5v/div v out 2v/div i out 1a/div en 5v/div flag 5v/div v out 5v/div i out 1a/div i out 500ma/div i out 1a/div en 5v/div flag 5v/div v out 2v/div v out 2v/div i out 1a/div en 5v/div flag 5v/div en 5v/div 400us/div 400us/div 400us/div threshold trip current (a) input voltage (v) threshold trip current vs. input voltage current limit response time vs. peak current peak current (a) 2.5 3 3.5 4 4.5 5 5.5 6 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 4 8 12 16 20 2 4 6 8 101214161820
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 7 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in =5v, c l =1 f,ta=25 , for only one channel, unless otherwise noted. flag 5v/div v out 2v/div i out 500ma/div 2ms/div inrush current with different load capacitance i out =1a 1ms/div ramped load on enabled device 2ms/div flag 2v/div turn off delay and fall time with output discharge i out =0a i out 1a/div i out 1a/div en 5v/div en 5v/div flag 5v/div i out 500ma/div 200us/div 470uf 220uf 100uf
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 8 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. function block diagram thermal sense deglitch flag2 logic thermal sense charge pump en1* in en2* charge pump uvlo deglitch current sense current sense logic gnd amp -- + amp -- + flag1 vref + - out1 out2 * en is active high for mp62341-1 figure 2?functional block diagram
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 9 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. detailed description over current when the load exceeds trip current (minimum threshold current triggering constant-current mode) or a short is present, mp62340- 1/mp62341-1 switches into to a constant-current mode (current limit value). mp62340-1/mp62341- 1 will be shutdown only if the over current condition stays long enough to trigger thermal protection. trigger over current protection for different overload conditions occurring in applications: 1) the output has been shorted or overloaded before the device is enabled or input applied. mp62340-1/mp62341-1 detects the short or overload and immediately switches into a constant-current mode. 2) a short or an overload occurs after the device is enabled. after the current-limit circuit has been tripped (reached the trip current threshold), the device switches into constant- current mode. however, high current may flow for a short period of time before the current-limit circuit can react. 3 output current has been gradually increased beyond the recommended operating current. the load current rises until the trip current threshold is reached or until the thermal limit of the device is exceeded. the mp62340-1/ mp62341-1 is capable of delivering current up to the trip current threshold without damaging the device. once the trip threshold has been reached, the device switches into its constant- current mode. flag response the flag pin is an open drain configuration. this fault will report a fail mode after an 8ms deglitch timeout. this is used to ensure that no false fault signals are reported. this internal deglitch circuit eliminates the need for extend components. the flag pin is not deglitched during an over temp or voltage lockout. thermal protection the purpose of thermal protection is to prevent damage in the ic by allowing exceptive current to flow and heating the junction. the die temp. is internally monitored until the thermal limit is reached. once this temp. is reached, the switch will turn off and allow the chip to cool. the switch has a built-in hysteresis. under-voltage lockout (uvlo) this circuit is used to monitor the input voltage to ensure that the mp62340-1/mp62341-1 is operating correctly. this uvlo circuit also ensures that there is no operation until the input voltage reaches the minimum spec. enable the logic pin disables the chip to reduce the supply current. the device will operate once the enable signal reaches the appropriate level. the input is compatible with both coms and ttl. output discharge the part involves a discharge function that provides a resistive discharge path for the external output capacitor. the function will be active when the part is disabled (input voltage is under uvlo or enable is deasserted) and it will be done in a very limited time.
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 10 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. application information power-supply considerations greater than 10f capacitor between in and gnd is recommended. this precaution reduces power-supply transients that may cause ringing on the input and improves the immunity of the device to short-circuit transients. in order to achieve smaller output load transient, placing a high-value electrolytic capacitor on the output pin(s) is recommended when the output load is heavy. out2 mp62340-1/ mp62341-1 out1 1 2 3 4 5 6 7 8 +5v to usb controller output 1 output 2 flag1 flag2 en1* in gnd en2* * en is active high for mp62341-1 figure 3?application circuit
mp62340-1/mp62341-1 ?current-limited power distribution switches mp62340-1/mp62341-1 rev. 0.91 www.monolithicpower.com 11 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information msop8e (exposed pad) note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusion or gate burr. 3) package width does not include interlead flash or protrusion. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) pin 1 identification has half or full circle option. 6) drawing meets jedec mo-187, variation aa-t. 7) drawing is not to scale. 0.030(0.75) 0.037(0.95) 0.043(1.10)max 0.002(0.05) 0.006(0.15) front view seating plane pin 1 id (note 5) 0.114(2.90) 0.122(3.10) 0.187(4.75) 0.199(5.05) 1 4 5 8 0.010(0.25) 0.014(0.35) 0.0256(0.65)bsc 0.114(2.90) 0.122(3.10) top view 0.004(0.10) 0.008(0.20) side view gauge plane 0.010(0.25) 0.016(0.40) 0.026(0.65) 0 o -6 o recommended land pattern 0.016(0.40) 0.0256(0.65)bsc 0.100(2.54) 0.181(4.60) 0.075(1.90) 0.040(1.00) exposed pad bottom view 0.087(2.20) 0.099(2.50) 0.062(1.58) 0.074(1.88)
mp62340-1/mp62341-1 ?current-limited power distribution switches notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp62340-1/mp62341-1 rev.0.91 www.monolithicpower.com 12 1/25/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. soic8 0.016(0.41) 0.050(1.27) 0 o -8 o detail "a" 0.010(0.25) 0.020(0.50) x 45 o see detail "a" 0.0075(0.19) 0.0098(0.25) 0.150(3.80) 0.157(4.00) pin 1 id 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.004(0.10) 0.010(0.25) 0.189(4.80) 0.197(5.00) 0.053(1.35) 0.069(1.75) top view front view 0.228(5.80) 0.244(6.20) side view 14 85 recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusions or gate burrs. 3) package width does not include interlead flash or protrusions. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) drawing conforms to jedec ms-012, variation aa. 6) drawing is not to scale. 0.010(0.25) bsc gauge plane

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