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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output ? non-isolated ? remote on/off ? high efficiency ? under-voltage lockout ? high power density ? fixed frequency (280 khz) ? trim function ? ocp/scp ? low profile package (7.82 mm) ? ul60950-1 recognized (ul/cul) description the bel xrah-05exx0 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 91% 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 3.3 v 7.0 v - 13.2 v 5 a 16.5 w 91% srah-05e330 vrah-05e330 2.5 v 7.0 v - 13.2 v 5 a 12.5 w 89% srah-05e250 vrah-05e250 1.8 v 7.0 v - 13.2 v 5 a 9 w 87% srah-05e180 vrah-05e180 1.5 v 7.0 v - 13.2 v 5 a 7.5 w 85% srah-05e150 vrah-05e150 1.2 v 7.0 v - 13.2 v 5 a 6 w 83% srah-05e120 VRAH-05E120 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 - 14 v ambient temperature -40 c - 85 c storage temperature -40 c - 125 c input specifications parameter min typ max notes input voltage 7 v - 13.2 v input current (no load) - 70 ma 100 ma input current (full load) - - 2.8 a remote off input current - 3 ma - input reflected ripple current (pk-pk) - 120 ma 240 ma input reflected ripple current (rms) - 50 ma 100 ma with simulated source impedance of 500 nh, 5 hz to 20 mhz. use one 270 uf/ 16 v oscon capacitor with esr=0.018 ohm max, at 100khz at the input i 2 t inrush current transient - 0.04 a 2 s 0.1 a 2 s turn on voltage threshold - 5 v 6 v turn off voltage threshold 3.2 v 3.8 v - note: all specifications are typical at 25 c unless otherwise stated. xrah-05exx0 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output output specifications parameter min typ max notes output voltage set point 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 3.200 v 2.425 v 1.745 v 1.455 v 1.164 v 3.3 v 2.5 v 1.8 v 1.5 v 1.2 v 3.400 v 2.575 v 1.855 v 1.545 v 1.236 v test conditions: io=50% full load. line regulation 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 - - - - - 15 mv 15 mv 5 mv 5 mv 5 mv 30 mv 30 mv 10 mv 10 mv 10 mv load regulation 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 - - - - - 10 mv 10 mv 5 mv 5 mv 5 mv 20 mv 20 mv 10 mv 10 mv 10 mv regulation over temperature (-40 c to +85 c) - 20 mv 40 mv output current range 0 a - 5 a output dc current limit 6.5 a - 12.5 a short circuit surge transient - 0.04 a 2 s 0.1 a 2 s ripple and noise (rms) - 20 mv 50 mv ripple and noise (pk-pk) - 60 mv 100 mv 0-20 mhz bw, with 330u f tantalum cap and 10 uf ceramic cap at output. turn on time - - 60 ms overshoot at turn on - - 5% output capacitance 330 uf - 2200 uf transient response overshoot - 120 mv 150 mv 50% ~ 100% max load settling time - 60 us 120 us overshoot - 120 mv 150 mv 100% ~ 50% max load settling time 3.3 v - 60 us 120 us overshoot - 120 mv 150 mv 50% ~ 100% max load settling time - 60 us 110 us overshoot - 120 mv 150 mv 100% ~ 50% max load settling time 1.2 v-2.5 v - 60 us 110 us test conditions: di/dt=0.5 a/us, vin=10 vdc, with 330 uf tantalum cap and 10 uf ceramic cap at output. note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. control specifications parameter min typ max notes remote on/off signal low (unit off) -0.3 v - 1.2 v signal high (unit on) 3 v - 14 v 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output general specifications parameter min typ max notes efficiency 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 88% 86% 84% 82% 80% 91% 89% 87% 85% 83% - - - - - vin=10 v, full load. switching frequency 200 khz 280 khz 360 khz output voltage trim range 90% - 110% mtbf tbd calculated per bell core sr-332 (vin=10 v; vo=3.3 v; i o =5 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 g - output trim equations equations for calculating the trim resistor given the desired adjusted voltage (vadj) and the nominal output voltage of the converter (vo) are shown below. 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. output voltage a b c d 3.3 v 17.2 40.2 53.841 61.7 2.5 v 4.496 5.62 9.556 11.24 1.8 v 3.064 10 3.849 13.83 1.5 v 3.712 5.62 3.254 10.26 1.2 v 3.712 5.62 1.87 10.26 note: vo=3.304 v for 3.3 v output voltage; vo=1.805 v for 1.8 v output voltage; vo=1.501 v for 1.5 v output voltage; vo=1.203 v for 1.2 v output voltage. vout trim gnd rtrim-u p module vout trim gnd rtrim-dow n module kohm b vo adj vo a up rtrim ) , ( _ ? ? = kohm d adj vo vo c down rtrim ) , ( _ ? ? =
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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output efficiency data efficiency curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.50 1.25 2.50 3.75 5.00 output current (a) efficiency 7 v 10 v 13.2 v efficiency curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.50 1.25 2.50 3.75 5.00 output current (a) efficiency 7 v 10 v 13.2 v vo=3.3 v vo=2.5 v efficiency curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.50 1.25 2.50 3.75 5.00 output current (a) efficiency 7 v 10 v 13.2 v efficiency curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.50 1.25 2.50 3.75 5.00 output current (a) efficiency 7 v 10 v 13.2 v vo=1.8 v vo=1.5 v efficiency curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.50 1.25 2.50 3.75 5.00 output current (a) efficiency 7 v 10 v 13.2 v vo=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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output thermal derating curves vo=3.3 v vo=1.8 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output ripple and noise waveforms 10 vdc input, 3.3 vdc output 10 vdc input, 2.5 vdc output 10 vdc input, 1.8 vdc output 10 vdc input, 1.5 vdc output 10 vdc input 1.2 vdc output note: ripple and noise at max load, 0-20mhz bw, with 330 uf tantalum cap and 10 uf ceramic cap 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output transient response waveforms 50% to 100% load, 3.3 vdc output 100% to 50% load, 3.3 vdc output 50% to 100% load, 2.5 vdc output 100% to 50% load, 2.5 vdc output 50% to 100% load, 1.8 vdc output 100% to 50% load, 1.8 vdc 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output transient response waveforms (continued) 50% to 100% load, 1.5 vdc output 100% to 50% load, 1.5 vdc output 50% to 100% load, 1.2 vdc output 100% to 50% load, 1.2 vdc output note: transient response at 10 vdc input, di/dt=0.5 a/us, with 330 uf tantalum cap and 10 uf ceramic cap at the output, 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 7.0 vdc - 13.2 vdc input 1.2 vdc - 3.3 vdc/5 a output mechanical outline srah-05exx0 vrah-05exx0 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 2 vin 3 ground 4 vout 5 trim 6 n/a 7 n/a pin connections pin function 1 remote on/off 2 vin 3 ground 4 vout 5 trim bel bel
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