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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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output ? non-isolated ? remote on/off ? trim function ? ocp/scp ? low profile package (7.82 mm) ? under-voltage lockout (uvlo) ? ul60950-1 recognized (ul/cul) description the bel xrah-03exx0 is part of the low cost non-isolated dc/dc converter power module series. the modules use a smd or sip package for ease of layout and space savings. the output is closely regulated and the efficiency of 3.3 vdc output module is typically 93% at full load. part selection output voltage input voltage max. output current max. output power typical efficiency part number surface mount part number vertical mount 5.0 vdc 8.0 vdc - 13.2 vdc 3 a 15 w 95% srah-03e500 vrah-03e500 3.3 vdc 4.5 vdc - 13.2 vdc 3 a 9.9 w 93% srah-03e330 vrah-03e330 2.5 vdc 4.5 vdc - 13.2 vdc 3 a 7.5 w 91% srah-03e250 vrah-03e250 1.8 vdc 4.5 vdc - 13.2 vdc 3 a 5.4 w 88% srah-03e180 vrah-03e180 1.5 vdc 4.5 vdc - 13.2 vdc 3 a 4.5 w 87% SRAH-03E150 vrah-03e150 1.2 vdc 4.5 vdc - 13.2 vdc 3 a 3.6 w 85% srah-03e120 vrah-03e120 1.0 vdc 4.5 vdc - 13.2 vdc 3 a 3 w 84% srah-03e100 vrah-03e100 0.9 vdc 4.5 vdc - 13.2 vdc 3 a 2.7 w 82% srah-03e090 vrah-03e090 notes: 1. add ?0? suffix at the end of the model number to indicate ?tube packaging?, and ?r? for ?reel packaging?, and ?g? for ?tray packaging?. 2. 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 - 14 v output enable terminal voltage -0.3 v - 13.2 v ambient temperature 0 c - 70 c storage temperature -40 c - 100 c input specifications parameter min typ max notes input voltage 4.5 v - 13.2 v min. input voltage for 5.0 v output module should be 8.0 v input current (no load) - 30 ma - input current (full load) - - 3 a remote off input current - 4 ma - input reflected ripple current (pk-pk) - 75 ma 150 ma input reflected ripple current (rms) - 30 ma 60 ma with simulated source impedance of 500 nh, 5 hz to 20 mhz; use two 270 uf/16 v oscon capacitors with esr = 0.018 ohm max. at 100 khz at 25 c i 2 t inrush current transient - 0.02 a 2 s 0.08 a 2 s turn-on voltage threshold - 4.1 v 4.5 v turn-off voltage threshold - 3.3 v 4.0 v not applicable for 5.0 v output. xrah-03exx0 series rohs com p liant rev.a not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output output specifications parameter min typ max notes output voltage set point v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v v o =1.0 v v o =0.9 v 4.900 v 3.234 v 2.450 v 1.764 v 1.470 v 1.176 v 0.980 v 0.882 v 5.0 v 3.3 v 2.5 v 1.8 v 1.5 v 1.2 v 1.0 v 0.9 v 5.100 v 3.366 v 2.550 v 1.836 v 1.530 v 1.224 v 1.020 v 0.918 v test condition: vin=8 v, lout=full load line regulation v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v v o =1.0 v v o =0.9 v - - - - - - - - 10 mv 8 mv 6 mv 6 mv 5 mv 5 mv 5 mv 5 mv 15 mv 10 mv 10 mv 10 mv 8 mv 8 mv 8 mv 8 mv load regulation v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v v o =1.0 v v o =0.9 v - - - - - - - - 15 mv 10 mv 8 mv 8 mv 5 mv 5 mv 5 mv 5 mv 25 mv 20 mv 15 mv 15 mv 10 mv 10 mv 10 mv 10 mv regulation over temperature (0 c to 70 c) - 20 mv 40 mv output current 0 a - 3 a current limit threshold 3.3 a - 8 a short circuit surge transient - 0.02 a 2 s 0.08 a 2 s ripple and noise (rms) - 15 mv 40 mv bw = 0-20 mhz. ripple and noise (pk-pk) 50 mv 100 mv bw = 0-20 mhz. turn on time - - 60ms overshoot at turn on - 0% 3% output capacitance 0 uf - 1200 uf transient response overshoot - 150 mv 200 mv 50% ~ 100% max load settling time - 60 us 120 us overshoot - 150 mv 200 mv 100% ~ 50% max load settling time v o =5 v - 60 us 120 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 120 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =3.3 v - 60 us 120 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 100 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =2.5 v - 60 us 100 us di/dt = 0.5 a/us; vin = 8 v; ta = 25 c and with a 220 uf tan. capacitor on output not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output output specifications (continued) parameter min typ max notes transient response overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 100 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =1.8 v - 60 us 100 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 120 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =1.5 v - 60 us 120 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 100 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =1.2 v - 60 us 100 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 100 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =1.0 v - 60 us 100 us overshoot - 110 mv 150 mv 50% ~ 100% max load settling time - 60 us 100 us overshoot - 110 mv 150 mv 100% ~ 50% max load settling time v o =0.9 v - 60 us 100 us di/dt = 0.5 a/us; vin = 8 v; ta = 25 c and with a 220 uf electrolytic capacitor on output note: all specifications are typical at 8v input, full load at 25 c unless otherwise stated. general specifications parameter min typ max notes efficiency v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v v o =1.0 v v o =0.9 v 91% 89% 87% 84% 83% 81% 80% 78% 95% 93% 91% 88% 87% 85% 84% 82% - - - - - - - - measured at vin=8 v, full load switching frequency 1 200 khz 300 khz 400 khz output trim range 90% v o - 110% v o for all outputs protection features mtbf 8,278,709 hours calculated per bell core sr-332 (i o = 80%load; t a = 25 c) dimensions (surface mount) inches (l w h) millimeters ( l w h ) 0.78 x 0.7 x 0.32 19.812 x 17.78 x 8.128 dimensions (vertical) inches (l w h) millimeters ( l w h ) 0.7 x 0.308 x 0.65 17.78 x 7.82 x 16.51 weight - 5.1 g - notes : all specifications are typical at 25 c unless otherwise stated. 1. min. of 0.9 v output should be 100%vo. not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output control specifications parameter min typ max notes remote on/off signal low (unit on) -0.3 v - 1 v signal high (unit off) 2.8 v - 13.2 v remote on/off pin open, unit on. output trim equations equations for calculating the trim resistor (in k ? ) given the desired adjusted voltage (vadj) and the nominal output voltage of the converter (vnom) are shown below. the trim down resistor should be connected between the trim pin and vout. the trim up resistor should be connected between the trim pin and ground. only one of the resistors should be used for any given application. b v v a r adj nom trimdown ? ? = d v v c r nom adj trimup ? ? = vnom a b c d 5.0 61.940 29.400 11.760 14.700 3.3 53.840 61.700 17.200 40.200 2.5 9.596 15.620 4.496 10.000 1.8 3.850 13.830 3.064 10.000 1.5 3.120 14.420 3.536 10.000 1.2 1.790 10.910 3.536 6.490 1.0 0.511 3.490 1.992 1.000 0.9 x x 0.960 0.100 module vout trim gnd rtrimdown module vout trim gnd rtrimup not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output efficiency data 5v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 8v 13.2v 3.3v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.3 0.8 1.5 2 .3 3.0 output current efficiency 4.5v 8v 13.2v 2.5v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 4.5v 8v 13.2v 1.8v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.30.81.52.33.0 output current efficiency 4.5v 8v 13.2v 1.5v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 4.5v 8v 13.2v 1.2v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 4.5v 8v 13.2 v not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output efficiency data (continued) 1.0v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 4.5v 8v 13.2 v 0.9v module 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 0.3 0.8 1.5 2.3 3.0 output current efficiency 4.5v 8v 13.2 v thermal derating curve vrah-03e330 not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output ripple and noise waveforms ripple and noise at max load 5.0 vdc output ripple and noise at max load 3.3 vdc output ripple and noise at max load 2.5 vdc output ripple and noise at max load 1.8 vdc output ripple and noise at max load 1.5 vdc output ripple and noise at max load 1.2 vdc output not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output ripple and noise waveforms (continued) ripple and noise at max load 1.0 vdc output ripple and noise at max load 0.9 vdc output note: ripple and noise at 8 vdc input, ta=25 deg c. transient response waveforms transients 50% to 100% load 5.0 vdc output transients 100% to 50% load 5.0 vdc output transients 50% to 100% load 3.3 vdc output transients 100% to 50% load 3.3 vdc output not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output transient response waveforms (continued) transients 50% to 100% load 2.5 vdc output transients 100% to 50% load 2.5 vdc output transients 50% to 100% load 1.8 vdc output transients 100% to 50% load 1.8 vdc output transients 50% to 100% load 1.5 vdc output transients 100% to 50% load 1.5 vdc output not for new designs
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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output transient response waveforms (continued) transients 50% to 100% load 1.2 vdc output transients 100% to 50% load 1.2 vdc output transients 50% to 100% load 1.0 vdc output transients 100% to 50% load 1.0 vdc output transients 50% to 100% load 0.9 vdc output transients 100% to 50% load 0.9 vdc output note: transient response at 8 v input, di/dt=0.5 a/us, with 220 uf electric cap at the output. not for new designs
? 2007 bel fuse inc. specifications subject to change without notice. 010807 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 4.5 vdc - 13.2 vdc input 0.9 vdc - 5.0 vdc/3 a output mechanical outline srah-03exx0 vrah-03exx0 rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products. these parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240 oc. bel pin connections pin function 1 remote on/off (option) 2 vin 3 ground 4 vout 5 trim (option) 6 n/a 7 n/a pin connections pin function 1 remote on/off (option) 2 vin 3 ground 4 vout 5 trim (option) bel bel not for new designs

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