bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? over temperature protection ? high power density ? wide input range ? fixed frequency (300 khz) ? wide trim range ? ocp/scp ? remote sense ? flexible output voltage sequencing ? converter can sink and source current ? remote on/off ? active low/high (option) description the bel SRBC-16F2Ax modules are a series of non-isolated dc/dc converters that deliver up to 16 a of output current with full load efficiency of 94% at 3.3 vdc output. these modules provide precisely regulated voltage programmable via external resistor from 0.75 vdc to 3.63 vdc over a wide range of input voltage (2.4 vdc - 5.5 vdc). these modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. the open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. standard features include remote on/off, remote sense, over current protection, short current protection, wide input, and programmable output voltage. part selection output voltage input voltage max. output current max. output power typical efficiency model number active low model number active high 0.75 v -3.63 v 1 2.4 v -5.5 v 16 a 58.1 w 94% SRBC-16F2Al SRBC-16F2A0 notes : 1. these modules use a buck topology, so the output voltages must be 0.8 v less than the input voltage. 2. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 3. add ?g? to the end of the model number to indicate tray packaging. absolute maximum ratings parameter min typ max notes input voltage (continuous) -0.3 v - 5.8 v output enable terminal voltage -0.3 v - 5.8 v sequencing voltage 1 -0.3 v - vin ambient temperature -40 c - 85 c storage temperature -55 c - 125 c notes : all specifications are typical at 25 c unless otherwise stated. 1. SRBC-16F2Ax series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. this is accomplished via an additional sequencing pin. when the sequencing feature is not used, tie the seq pin to vin or leave the seq pin floating. SRBC-16F2Ax rohs com p liant rev.a
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output input specifications parameter min typ max notes input voltage 2.4 v - 5.5 v vo, set vin-0.8 v input current (full load) vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v vo=0.75 v - - - - - - 11.23 a 8.70 a 6.40 a 5.45 a 4.52 a 3.05 a 15.10 a 14.81 a 13.64 a 11.76 a 9.64 a 6.69 a input current (no load) - 80 ma - remote off input current - 10 ma 22 ma input reflected ripple current (pk-pk) - 100 ma - input reflected ripple current (rms) - 40 ma - tested with two 100uf/10v tantalum input capacitors (p/n: tpsc107k010r0075 avx) & simulated source impedance of 1 uh, 5 hz to 20 mhz. i 2 t inrush current transient - 0.15 a 2 s0.3 a 2 s turn-on voltage threshold - 2.2 v - turn-off voltage threshold - 2.0 v - output specifications parameter min typ max notes output voltage set point -2% vo,set - 2% vo,set vin=5 v, lo=lomax full load output voltage set point -3% vo,set - 3% vo,set over all operating input voltages, resistive loads and temperature conditions load regulation - 0.4% vo,set - io=iomin to iomax line regulation - 0.3% vo,set - vin=vinmin to vinmax regulation over temperature (-40 c to +85 c) - 0.5% vo,set - tref=tamin to tamax output current 0 a - 16 a current limit threshold 19 a - 35 a short circuit surge transient - 1.6a 2 s 2 a 2 s ripple and noise (pk-pk) - 25 mv 50 mv ripple and noise (rms) - 8 mv 15 mv tested with 0-20 mhz, 10 uf / 16 v tantalum capacitor & 1 uf /10 v tdk ceramic capacitor at the output turn on time - 4 ms 8 ms overshoot at turn on - 0% vo,set 3% vo,set output capacitance esr 1 mohm esr 10 mohm 0 uf 0 uf - - 1000 uf 5000 uf
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output output specifications (continued) parameter min typ max notes transient response 50% ~ 100% max load - 300 mv - settling time - 50 us - 100% ~ 50% max load - 300 mv - settling time all - 50 us - di/dt=2.5 a/us; vin=5 v; and with 10 uf/16 v tantalum capacitor & 1 uf/10 v ceramic capacitor at the output 50% ~ 100% max load - 150 mv - settling time - 100 us - 100% ~ 50% max load - 150 mv - settling time all - 100 us - di/dt=2.5 a/us, vin=5 v; and with two 150 uf/10 v tantalum capacitors & 1 uf/10 v ceramic capacitor at the output note: all specifications are typical at nominal input (vin=5 v), full load at 25 c unless otherwise stated. general specifications parameter min typ max notes efficiency vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v vo=0.75 v 92% 90% 88% 85% 82% 76% 94% 92% 90% 88% 85% 79% - - - - - - measured at vin=5 v, full load switching frequency 250 khz 300 khz 350 khz over temperature shutdown - 125 c - output trim range (wide trim) 0.7525 v - 3.63 v remote sense compensation - - 5% mtbf 5,438,000 hours calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches (l w h) millimeters ( l w h ) 1.30 x 0.53 x 0.315 33.02 x 13.46 x 8.00 weight - 6.6 g - note : all specifications are typical at 25 c unless otherwise stated. control specifications parameter min typ max notes remote on/off signal low (unit off) -0.3 v - 0.3 v signal high (unit on) 1.5 v - 5.8 v SRBC-16F2A0; remote on/off pin open, unit on. signal low (unit on) -0.3 v - 0.3 v signal high (unit off) 1.5 v - 5.8 v SRBC-16F2Al; remote on/off pin open, unit on. sequencing voltage 0.05v - vin sequencing voltage should be higher than output voltage. sequencing slew rate capability - - 2 v/ms sequencing delay time 10 ms - - delay from vinmin to application of voltage on seq pin tracking accuracy power-up power-down - - 100 mv 200 mv 200 mv 400 mv
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output output trim equations equation for calculating the trim resistor (in k ? ) given the desired adjusted voltage (vadj) is shown below. the trim up resistor should be connected between the trim pin and ground. 11 . 5 7525 . 0 07 . 21 ? ? = adj trim v r equation for calculating the trim voltage (in v) given the desired adjusted voltage (vadj) is shown below. the trim up voltage should be connected between the trim pin and ground. ) 7525 . 0 ( 1698 . 0 7 . 0 ? ? = adj trim v v rtrim module vout gnd trim vtrim module vout gnd trim
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output efficiency data vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v vo=0.7525 v 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 98.0% 12345678910111213141516 4.5v 5v 5.5v 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 12345678910111213141516 3.0v 3.3v 5v 5.5v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 12345678910111213141516 3v 3.3 5v 5.5v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3v 3.3v 5v 5.5v 50.0% 55.0% 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3v 3.3v 5v 5.5 45.0% 50.0% 55.0% 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 12345678910111213141516 3v 3.3v 5v 5.5v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output thermal derating curves vin=5.0 v, vo=2.5 v or 3.3 v vin=5.0 v, vo=1.5 v or 1.8 v vin=5.0 v, vo=0.7525 v or 1.2 v vin=3.3 v, vo=1.5 v or 1.8 v vin=3.3 v, vo=0.7525 v or 1.2 v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output ripple and noise waveforms ripple and noise at full load, 0.75 v output ripple and noise at full load, 1.2 v output ripple and noise at full load, 1.5 v output ripple and noise at full load, 1.8 v output ripple and noise at full load, 2.5 v output ripple and noise at full load, 3.3 v output note: ripple and noise at 5.0 v input, 0-20mhz bw, 10 uf/16 v tantalum cap and 1uf/10 v ceramic capacitor, ta=25 deg c.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output transient response waveforms 50% to 100% load step at 0.75 v output 100% to 50% load step at 0.75 v output 50% to 100% load step at 1.2 v output 100% to 50% load step at 1.2 v output 50% to 100% load step at 1.5 v output 100% to 50% load step at 1.5 v output
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output transient response waveforms (continued) 50% to 100% load step at 1.8 v output 100% to 50% load step at 1.8 v output 50% to 100% load step at 2.5 v output 100% to 50% load step at 2.5 v output 50% to 100% load step at 3.3 v output 100% to 50% load step at 3.3 v output note: transient response at 5.0 v input, di/dt=2.5 a/us, with two 150 uf/10 v tantalum capacitors and 1 uf/10 v ceramic capacitor, ta=25 deg c.
? 2007 bel fuse inc. specifications subject to change without notice. 011607 corporate far east europe bel fuse inc. bel fuse ltd. bel fuse europe ltd. 206 van vorst street 8f/ 8 luk hop street preston technology management centre jersey city, nj 07302 san po kong marsh lane, suite g7, preston tel 201-432-0463 kowloon, hong kong lancashire, pr1 8ud, u.k. fax 201-432-9542 tel 852-2328-5515 tel 44-1772-556601 www.belfuse.com fax 852-2352-3706 fax 44-1772-888366 www.belfuse.com www.belfuse.com non-isolated dc/dc converters 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16 a output mechanical outline rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products. pin connections pin function 1 remote on/off 2 vin 3 seq 4 ground 5 vout 6 trim 7 remote sense pad size: min: 0.14"* 0.095" (3.56mm * 2.41mm) max: 0.165"* 0.11" (4.19mm * 2.79mm) bottom view
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