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/6 a output ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? wide trim ? high power density ? ocp/scp ? fixed frequency (300 khz) ? remote on/off ? flexible output voltage sequencing ? active low/high (option) ? able to sink & source current description the bel vrba-06f2ax modules are a series of non-isolated dc/dc converters that deliver up to 6 a of output current with full load efficiency of 93% 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 (2.4 vdc - 5.5 vdc). these modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. 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 circuit 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 0.75 v -3.63 v 1 2.4 v - 5.5 v 6 a 21.8 w 93% vrba-06f2al vrba-06f2a0 notes : 1. these modules use a buck topology, so the output voltages must be 0.5 v less than the input voltage. 2. add ?g? suffix at the end of the model number to indicate tray packaging. 3. 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 - 5.5 v sequencing voltage 1 -0.3 v - vin ambient temperature -40 c - 85 c storage temperature -55 c - 125 c notes : all specifications are typical at 25 c unless otherwise stated. 1. vrba-06f2ax series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. this is accomplished via an additional sequencing pin. when not used sequencing feature, tie the seq pin to vin or leave the seq pin floating. v rba-06f2ax 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/6 a output input specifications parameter min typ max notes input voltage vo 1.5 v vo=1.8 v 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 - - - - - - - - - - - - 4.73 a 3.66 a 4.09 a 4.31 a 3.57 a 2.40 a input current (no load) vo=3.3 v vo=0.75 v - - 50 ma 25 ma - - remote off input current - 0.6 ma - input reflected ripple current (pk-pk) - 120 ma - input reflected ripple current (rms) - 35 ma - tested with simulated source impedance of 1 uh, 5 hz to 20 mhz, one 1000 uf/25 v al capacitor and two 100 uf/ 10 v tantalum capacitor at the input. i 2 t inrush current transient - - 0.04 a 2 s turn-on voltage threshold - 2.05 v 2.4 v turn-off voltage threshold 1.8 v 2.0 v - output specifications parameter min typ max notes output voltage set point -2% vo,set - 2% vo,set vin=5 v, 50% full load output voltage set point -3% vo,set - 3% vo,set over all operating input voltages, resistive loads and temperature conditions adjustment range selected by external resistor or voltage 0.7525 v - 3.63 v load regulation - 0.4% vo,set - io=iomin to 50%iomax to 100%iomax line regulation - 0.3% vo,set - vin=vinmin to 50%vinmax to 100%vinmax regulation over temperature (-40 c to +85 c) - 0.4% vo,set - tref=tamin to tamax output current 0 a - 6 a current limit threshold 9 a - 18 a short circuit surge transient - 0.32 a 2 s - ripple and noise (pk-pk) - 40 mv 70 mv ripple and noise (rms) - 10 mv 30 mv tested with 0-20 mhz, with 10 uf tantalum capacitor & 1 uf/10 v ceramic capacitor at the output. turn on time - 6 ms 10 ms overshoot at turn on - - 3% output capacitance min esr 1mohm max esr 10mohm 0 uf 0 uf - - 1000 uf 3000 uf transient response 50% ~ 100% max load - 130 mv - settling time - 25 us - 100% ~ 50% max load - 130 mv - settling time v o = 0.75 v - 3.63 v - 25 us - di/dt=2.5 a/us; vin=5 v; and with 10 uf tantalum capacitor & 1 uf/10 v tdk 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/6 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=0.75 v - - - - - - 93% 91% 88% 87% 84% 78% - - - - - - measured at vin=5 v, full load switching frequency 250 khz 300 khz 350 khz over temperature shutdown - 135 c - output voltage trim range 0.7525 v - 3.63 v mtbf 7,142,646 hours calculated per bell core sr-332 (vin=5 v; vo=0.75 v; i o = 4.8 a; t a = 25 c) dimensions inches (l w h) millimeters ( l w h ) 1.0 x 0.5 x 0.243 25.4 x 12.7 x 6.16 weight - 5 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) -0.2 v - 0.3 v signal high (unit on) - - vin, max vrba-06f2a0; remote on/off pin open, unit on. signal low (unit on) -0.2 v - 0.3 v signal high (unit off) 1.5 v - vin, max vrba-06f2al; remote on/off pin open, unit on. sequencing voltage 0 v - vin sequencing voltage applied on seq pin should be higher than output voltage. sequencing slew rate capability - - 2 v/ms sequencing delay time 10 ms - - delay from vin, min to application of voltage on seq pin tracking accuracy power-up power-down - - 100 mv 200 mv 200 mv 400 mv 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
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/6 a output efficiency data efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.61.53.04.56.0 output current (a) efficienc y 4.5 v 5.0 v 5.5 v efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.6 1.5 3.0 4.5 6.0 output current (a) efficienc y 4.5 v 5.0 v 5.0 v vo=3.3 v vo=2.5 v efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.6 1.5 3.0 4.5 6.0 output current (a) efficienc y 3.0 v 5.0 v 5.5 v efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.61.53.04.56.0 output current (a) efficienc y 2.4 v 5.0 v 5.5 v vo=1.8 v vo=1.5 v efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.6 1.5 3.0 4.5 6.0 output current (a) efficienc y 2.4 v 5.0 v 5.5 v efficiency curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.61.53.04.56.0 output current (a) efficienc y 2.4 v 5.0 v 5.5 v vo=1.2 v vo=0.7525 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/6 a output thermal derating curves vin=5 v, vo = 3.3 v vin=5 v, vo = 0.75 v vin=4.5 v, vo = 2.5 v vin=3.3 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/6 a output ripple and noise waveforms ripple and noise at full load, vin=5.0 v, vo=0.7525 v ripple and noise at full load, vin=5.0 v, vo=1.2 v ripple and noise at full load, vin=5.0 v, vo=1.5 v ripple and noise at full load, vin=5.0 v, vo=1.8 v ripple and noise at full load, vin=5.0 v, vo=2.5 v ripple and noise at full load, vin=5.0 v, vo=3.3 v note: ripple and noise is tested at 0-20 mhz bw, 10 uf/10 v tantalum capacitor and 1 uf/10 v ceramic capacitor, 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/6 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/6 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 10 uf/10 v tantalum capacitor and 1 uf/10 v ceramic capacitor, ta=25 deg c.
? 2007 bel fuse inc. specifications subject to change without notice. 011207 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/6 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 vout 2 trim 3 ground 4 seq 5 vin 6 remote on/off
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