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, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs ? non-isolated ? low cost ? fixed frequency ? excellent thermal performance ? high efficiency ? high power density ? ul60950-1 recognized (ul/cul) ? ocp/scp ? industrial temperature range description the bel xrah-01fxxn modules are non-isolated; step down dc/dc converters that operate from a 3 v - 5.5 v source. output voltages are -5.0 v, -5.2 v, and -12 v. they are packaged in a compact, overmolded package rated at 1 a, 1 a, 0.5 a. optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. the output is closely regulated and the efficiency is typically 88% at 1 a, -5 v output 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 v 3.0 v - 5.5 v 1 a 5 w 88% srah-01f50n vrah-01f50n -5.2 v 3.0 v - 5.5 v 1 a 5.2 w 88% srah-01f52n vrah-01f52n -12 v 3.0 v - 5.5 v 0.5 a 6 w 88% srah-01fx2n vrah-01fx2n 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 - 7 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 = -5.0 v, -5.2 v v o = -12 v - - - - 2.1 a 2.5 a input current (no load) v o = -5.0 v, -5.2 v v o = -12 v - - - - 150 ma 200 ma input reflected ripple current (pk-pk) - 80 ma 160 ma input reflected ripple current (rms) - 20 ma 50 ma for -5 v & -5.2 v output, use a 680uf/6.3 v os-con capacitor; for -12 v output, use 1000 uf electrolytic capacitor & 22 uf/10 v ceramic capacitor at the input. i 2 t inrush current transient - - 0.01 a 2 s turn-on voltage threshold - 2.63 v - turn-off voltage threshold v o = -5.0 v, -5.2 v v o = -12 v 0.4 v 1.0 v - - 2.0 v 2.3 v xrah-01fxxn 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, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs output specifications parameter min typ max notes output voltage set point v o = -5.0 v v o = -5.2 v v o = -12 v -5.1 v -5.304 v -12.24 v -5.0 v -5.2 v -12 v -4.90 v -5.096 v -11.76 v vin=5.0 v, lout=half load; with 220 uf/10 v tantalum capacitor & 0.1 uf ceramic capacitor (vo= -5 v & -5.2 v) or two 47 uf/25 v tantalum capacitors & 0.1uf ceramic capacitor (vo= -12 v). line regulation v o = -5.0 v, -5.2 v v o = -12 v -20 mv -120 mv - - 20 mv 120 mv load regulation v o = -5.0 v, -5.2 v v o = -12 v -60 mv -120 mv - - 60 mv 120 mv regulation over temperature (-40 c to +85 c) v o = -5.0 v, -5.2 v v o = -12 v -80 mv -240 mv - - 80 mv 240 mv ripple and noise (rms) v o = -5.0 v vo= -5.2 v v o = -12 v - - - 25 mv 25 mv 40 mv 40 mv 50 mv 70 mv ripple and noise (pk-pk) v o = -5.0 v vo= -5.2 v v o = -12 v - - - 90 mv 100 mv 120 mv 120 mv 130 mv 240 mv test conditions: bw = 0-20 mhz; with 220 uf/10v tantalum capacitor & 0.1 uf ceramic capacitor (vo= - 5 v & -5.2 v) or two 47 uf/25 v tantalum capacitors & 0.1 uf ceramic capacitor (vo=- 12 v). output current range v o = -5.0 v, -5.2 v v o = -12 v 0 a 0 a - - 1 a 0.5 a output dc current limit - 200% - short circuit surge transient - - 0.01 a 2 s turn on time - 10 ms 30 ms overshoot at turn on - 0% 3% output capacitance v o = -5.0 v, -5.2 v v o = -12 v 220 uf 100 uf - - 470 uf 150 uf transient response overshoot - 80 mv - 50% ~ 100% max load settling time - 40 us - overshoot - 80 mv - 100% ~ 50% max load settling time vo= -5.0 v, -5.2 v - 40 us - overshoot - 130 mv - 50% ~ 100% max load settling time - 50 us - overshoot - 130 mv - 100% ~ 50% max load settling time v o = -12 v - 50 us - test conditions: di/dt = 0.1 a/us; vin = 5.0 v; ta = 25 c and with 220 uf/10 v tantalum capacitor & 0.1 uf ceramic capacitor (vo= -5 v & -5.2 v) or two 47 uf/25 v tantalum capacitors & 0.1 uf ceramic capacitor (vo=-12 v). 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, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs general specifications parameter min typ max notes efficiency 84% 88% - vin=5 v; lo=lomax switching frequency 250 khz 300 khz 350 khz mtbf 4,883,163 hours calculated per bell core sr-332 (i o = 80%lomax; t a = 25 c) dimensions (surface mount) inches (l w h) millimeters ( l w h ) 0.78 x 0.7 x 0.32 19.82 x 17.78 x 8.13 srah-01fxxn 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 vrah-01fxxn weight - 4.9 g - note : all specifications are typical at 25 c unless otherwise stated. thermal derating curve xrah-01f50n efficiency data module -5v,-5.2v 55.0% 65.0% 75.0% 85.0% 95.0% 0.10 0.25 0.50 0.75 1.00 output current efficiency 3.3 5 5.5 module -12v 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.050 0.125 0.250 0.375 0.500 output current efficienc y 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 3.0 vdc - 5.5 vdc input, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs ripple and noise waveforms 3.3 v input, -5 v output 5 v input, -5 v output note: ripple and noise at full load, with a 220 uf/10 v tantalum capacitor and a 0.1uf ceramic capacitor at the output, ta=25 deg c. 3.3 v input, -12 v output 5 v input, -12 v output note: ripple and noise at full load, with a 2*47uf/25 v tantalum capacitor and a 0.1uf ceramic 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, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs transient response waveforms 50% to 100% load transient at vin=3.3 v, vo=-5 v 100% to 50% load transient at vin=3.3 v, vo=-5 v 50% to 100% load transient at vin=5 v, vo=-5 v 100% to 50% load transient at vin=5 v, vo=-5 v note: transient response at di/dt=0.1 a/us, with a 220 uf/10 v tantalum capacitor and a 0.1uf ceramic 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, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a outputs transient response waveforms (continued) 50% to 100% load transient at vin=3.3 v, vo=-12 v 100% to 50% load transient at vin=3.3 v, vo=-12 v 50% to 100% load transient at vin=5 v, vo=-12 v 100% to 50% load transient at vin=5 v, vo=-12 v note: transient response at di/dt=0.1 a/us, with a 2*47uf/25vtantalum capacitor and a 0.1uf ceramic capacitor 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 3.0 vdc - 5.5 vdc input, -5 vdc/1 a, -5.2 vdc/1 a, -12 vdc/0.5 a utputs mechanical outline srah-01fxxn vrah-01fxxn 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. pin connections pin function 1 n/a 2 vin 3 ground 4 vout 5 n/a 6 n/a 7 n/a pin connections pin function 1 n/a 2 vin 3 ground 4 vout 5 n/a
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