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 ? ? high efficiency ? ? high power density ? ? fixed frequency (300 khz) ? ? remote on/off ? ? converter can sink and source ? ? description the bel SRBC-16F1Ax 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 (vin=2.4 vdc - 5.5 vdc). the open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. standard features include remote on/off, 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 model number active low 0.75 v - 3.63 v 1 2.4 v - 5.5 v 16 a 58 w 94% SRBC-16F1Al SRBC-16F1A0 SRBC-16F1Aw 2 notes : 1. these modules use a buck topology, so the output voltages must be 0.8 v less than the input voltage. 2. ?w? indicates special coating. 3. add ?g? to the end of the model number to indicate tray packaging. 4. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 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 ambient temperature -40 c - 85 c storage temperature -55 c - 125 c note : all specifications are typical at 25 c unless otherwise stated. input specifications parameter min typ max notes input voltage v o 1.5 v vo=1.8 - 2.5 v vo=3.3 v 2.4 v 3.0 v 4.5 v - - - 5.5 v 5.5 v 5.5 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 SRBC-16F1Ax 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 (continued) parameter min typ max notes 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 - with simulated source impedance of 1 uh, 5 hz to 20 mhz and two 100 uf /10 v external input tantalum capacitors at the input. i 2 t inrush current transient - 0.15 a 2 s 0.3 a 2 s turn-on voltage threshold - 2.2 v - turn-off voltage threshold - 2.0 v - note : all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max notes output voltage set point -2% vo,set - 2% vo,set vin=5 v, lo=lo max output voltage set point -3% vo,set - 3% vo,set over all operating input voltage, resistive load, and temperature conditions load regulation - 0.4% vo,set - lo=lo min to lo max line regulation - 0.3% vo,set - vin=vin min to vin max regulation over temperature (-40 c to +85 c) - 0.5% vo,set - output current 0 a - 16 a current limit threshold 19 a - 35 a short circuit surge transient - 1.6 a 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, with external 10 uf/16 v tantalum capacitor &1 uf /10 v tdk ceramic capacitor turn on time - 4 ms 8 ms overshoot at turn on - 0% 3% output capacitance esr 1 mohm esr 10 mohm 0 uf 0 uf - - 1000 uf 5000 uf transient response 50% ~ 100% max load - 300 mv - settling time - 50 us - 100% ~ 50% max load - 300 mv - settling time vo=0.75-3.3 v - 50 us - di/dt=2.5 a/us; vin=5 v; and with external 10 uf / 16 v tantalum capacitors and 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 vo=0.75-3.3 v - 100 us - di/dt=2.5 a/us; vin=5 v; and with external 2 x 150 uf / 10 v tantalum capacitors and 1 uf/10 v ceramic capacitor at the output note : all specifications are typical at nominal input, full load at 25 c unless otherwise stated.
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 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=0.7525 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 voltage trim range 0.7525 v - 3.63 v remote sense compensation - - 5% total adjustment of trim, setpoint and remote sense combined should not exceed 3.63 v. vo=0.7525 v when trim pin open mtbf 5,438,000 hours calculated per bell core sr-332 (i o = 80% io, max; vo=1.8 v; vin=5.0 v; t a = 25 c) dimensions inches (l w h) millimeters (l w h) 1.3 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-16F1A0; 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-16F1Al & SRBC-16F1Aw; remote on/off pin open, unit on.
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 remote enable specifications 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 the SRBC-16F1Al modules feature an enable pin with negative logic. if not using the enable pin, leave the pin open (the module will be on). during logic_high, the module is turned off, during logic_low, the module is turned on. it inner circuit impedance is showed as figure. the SRBC-16F1A0 modules feature an enable pin with positive logic. if not using the enable pin, leave the pin open (the module will be on). during logic_high, the module is turned on, during logic_low, the module is turned off. it inner circuit impedance is showed as figure. SRBC-16F1Al SRBC-16F1A0
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 80.0% 85.0% 90.0% 95.0% 100.0% 1 2 3 4 5 6 7 8 9 10111213141516 4.5v 5v 5.5v 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1 2 3 4 5 6 7 8 9 10111213141516 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% 12345678910111213141516 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% 12345678910111213141516 3v 3.3v 5v 5.5 45.0% 55.0% 65.0% 75.0% 85.0% 12345678910111213141516 3v 3.3v 5v 5.5v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v vo=0.75 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 thermal derating curves vin=5.0 v, vo=3.3 v or 2.5 v vin=5.0 v, vo=1.8 v or 1.5 v vin=5.0 v, vo=0.7525 v or 1.2 v vin=3.3 v, vo=1.8 v or 1.5 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 vin=5.0 v, vo=0.75 v vin=5.0 v, vo=1.2 v vin=5.0 v, vo=1.5 v vin=5.0 v, vo=1.8 v vin=5.0 v, vo=2.5 v vin=5.0 v, vo=3.3 v note: ripple and noise is tested at 0-20 mhz bw, 10 uf/16 v tantalum capacitor and 1 uf/10 v ceramic capacitor, full load, and 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 vin=5 v, vo=0.75 v 100% to 50% load step at vin=5 v, vo=0.75 v 50% to 100% load step at vin=5 v, vo=1.2 v 100% to 50% load step at vin=5 v, vo=1.2 v 50% to 100% load step at vin=5 v, vo=1.5 v 100% to 50% load step at vin=5 v, vo=1.5 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 transient response waveforms (continued) 50% to 100% load step at vin=5 v, vo=1.8 v 100% to 50% load step at vin=5 v, vo=1.8 v 50% to 100% load step at vin=5 v, vo=2.5 v 100% to 50% load step at vin=5 v, vo=2.5 v 50% to 100% load step at vin=5 v, vo=3.3 v 100% to 50% load step at vin=5 v, vo=3.3 v note: transient response is tested at di/dt=2.5 a/us, with two 150 uf/10 v tantalum capacitors and 1uf/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 n/a 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)
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