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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output ? non-isolated ? trim function (option) ? fixed frequency (550 khz) ? high efficiency ? low profile package ? allows burst mode operation at low load currents ? ul60950-1 recognized (ul/cul) description the bel xrah-01fxx0 is part of the low cost non-isolated dc/dc converter series. the modules use a surface mount package or vertical package for ease of layout and space savings. the output is closely regulated and the efficiency of 12 vdc output module is typically 88% at full load. typical features include burst mode operation at light load and trim function (option). part selection output voltage input voltage max. output current max. output power typical efficiency part number surface mount part number vertical mount 12 vdc 3.0 vdc - 5.5 vdc 0.8 a 9.6 w 88% srah-01fx20 VRAH-01FX20 15 vdc 3.0 vdc - 5.5 vdc 0.6 a 9.0 w 88% srah-01fx50 vrah-01fx50 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) 2.8 v - 6 v ambient temperature -40 c - 85 c storage temperature -40 c - 125 c input specifications parameter min typ max notes input voltage 3 v - 5.5 v input current (full load) v o =12 v v o =15 v - - - - 4.3 a 4.0 a input reflected ripple current (pk-pk) - 100 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 270 uf/16 v oscon capacitor with esr = 0.018 ohm max. at 100 khz i 2 t inrush current transient - 0.02 a 2 s 0.05 a 2 s turn-on voltage threshold - 2.8 v 2.9 v note : all specifications are typical at 25 c unless otherwise stated. xrah-01fxx0 series 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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output output specifications parameter min typ max notes output voltage set point v o =12 v v o =15 v 11.580 v 14.475 v 12 v 15 v 12.420 v 15.525 v test condition: vin=5 v, lout=full load line regulation v o =12 v v o =15 v - - 20 mv 20 mv 40 mv 40 mv load regulation v o =12 v v o =15 v - - 60 mv 75 mv 120 mv 150 mv regulation over temperature (-40 c to +85 c) v o =12 v v o =15 v - - 45 mv 60 mv 80 mv 100 mv output current v o =12 v v o =15 v 0 a 0 a - - 0.8 a 0.6 a ripple and noise (rms) v o =12 v; i o =0 a v o =15 v; i o =0 a v o =12 v; i o =0.8 a v o =15 v; i o =0.6 a - - - - 5 mv 5 mv 20 mv 30 mv 10 mv 10 mv 40 mv 50 mv ripple and noise (pk-pk) v o =12 v; i o =0 a v o =15 v; i o =0 a v o =12 v; i o =0.8 a v o =15 v; i o =0.6 a - - - - 20 mv 20 mv 60 mv 80 mv 40 mv 40 mv 100 mv 120 mv test conditions: bw = 0-20 mhz; 1uf ceramic cap and 33 uf tantalum capacitor at the output. rise time - 5 ms - overshoot at turn on - 0% 5% output capacitance 33 uf - 330 uf the min output capacitance is 33 uf tantalum capacitor at the output transient response overshoot - 130 mv 200 mv 50% ~ 100% max load settling time - 100 us 200 us overshoot - 130 mv 200 mv 100% ~ 50% max load settling time all outputs - 100 us 200 us di/dt = 0.1 a/us; vin = 5 v; and with 33 uf tantalum 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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output general specifications parameter min typ max notes efficiency v o =12 v v o =15 v 84% 84% 88% 88% - - measured at vin=5 v, full load switching frequency 500 khz 550 khz 650 khz output trim range 90% v o - 110% v o mtbf 13,684,605 hours calculated per bell core sr-332 (vin= 5 v; vo=12 v; i o = 0.64 a; t a = 25 c) dimensions (surface mount) inches (l w h) millimeters ( l w h ) 0.78 x 0.7 x 0.32 19.81 x 17.78 x 8.13 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 - 5.2 g - note : all specifications are typical at 25 c unless otherwise stated. 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 down trim ? ? = ? d v v c r nom adj up trim ? ? = ? vnom a b c d 12 164.640 21.850 11.760 7.150 15.055 209.542 20.600 11.760 5.900 vout tr im gnd rtrim-dow n module vout trim gnd rt ri m- up module
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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output efficiency data efficiency curve 78.0% 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 0.08 0.20 0.40 0.60 0.80 output current (a) efficienc y 3.0 v 5.0 v 5.5 v efficiency curve 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.06 0.15 0.30 0.45 0.60 output current (a) efficienc y 3.0 v 5.0 v 5.5 v xrah-01fx20 xrah-01fx50 thermal derating curves xrah-01fx20 xrah-01fx50
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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output ripple and noise waveforms ripple and noise at full load, vin=5 v, vo=12 v ripple and noise at no load, vin=5 v, vo=12 v ripple and noise at full load, vin=5 v, vo=15 v ripple and noise at no load, vin=5 v, vo=15 v note : ripple and noise tested with 1 uf ceramic capacitor and 33 uf tantalum capacitor at the output, 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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output transient response waveforms 50% to 100% load transient at vin=5 v, vo=12 v 100% to 50% load transient at vin=5 v , vo=12 v 50% to 100% load transient at vin=5 v, vo=15 v 100% to 50% load transient at vin=5 v , vo=15 v note : transient response tested at di/dt=0.1 a/us, with an external 33 uf tantalum load capacitor at the output, and ta=25 deg c.
? 2007 bel fuse inc. specifications subject to change without notice. 011007 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 3.0 vdc - 5.5 vdc input 12 vdc/0.8 a & 15 vdc/0.6 a output mechanical outline srah-01fxx0 vrah-01fxx0 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 c . bel bel pin connections pin function 1 n/a 2 vin 3 ground 4 vout 5 trim (option) 6 n/a 7 n/a pin connections pin function 1 n/a 2 vin 3 ground 4 vout 5 trim (option) bel
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