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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 ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a nonisolated compact, low profile surface mount package fixed frequency high efficiency means less power dissipation excellent thermal performance optimized for cost remote on/off undervoltage lockout (uvlo) over current and short circuit protection description the bel s7ah-03a and v7ah-03a modules are a series of non-isolated, step down dc/dc power converters that operate from a nominal 12v source. these converters are available in a range of output voltages from 1.5v to 5.0v. they are pack- aged in a compact, overmolded package rated at 3a. optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. standard features include remote on/off, over current and short cir cuit protection, and output voltage adjust. these products may be used almost anywhere low voltage silicon is employed and a 12v source is available. typical applications include file servers, routers, line cards and other computing and communications equipment. applications page 1 s7ah-03a / v7ah-03a series distributed power architectures data networking equipment telecommunications computers and peripherals part number selection t u p t u o e g a t l o v t u p n i e g a t l o v t u p t u o . x a m t n e r r u c t u p t u o . x a m r e w o p l a c i p y t y c n e i c i f f e r e b m u n t r a p t n u o m e c a f r u s r e b m u n t r a p t n u o m l a c i t r e v v 0 . 5v 2 1a 3w 5 1% 1 90 0 5 a 3 0 - h a 7 s0 0 5 a 3 0 - h a 7 v v 3 . 3v 2 1a 3w 9 . 9% 0 90 3 3 a 3 0 - h a 7 s0 3 3 a 3 0 - h a 7 v v 5 . 2v 2 1a 3w 5 . 7% 8 80 5 2 a 3 0 - h a 7 s0 5 2 a 3 0 - h a 7 v v 8 . 1v 2 1a 3w 4 . 5% 5 80 8 1 a 3 0 - h a 7 s0 8 1 a 3 0 - h a 7 v v 5 . 1v 2 1a 3w 5 . 4% 4 80 5 1 a 3 0 - h a 7 s0 5 1 a 3 0 - h a 7 v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 2 input specifications absolute maximum ratings note: use beyond the maximum ratings may cause a reliability degradation of the dc/dc converter or may permanently damage the device. note: input capacitance 270f/16v, esr = 0.03 ? max at 100khz @ 25 c. 1. with simulated source impedance of 500nh, 5hz to 20mhz. r e t e m a r a p l o b m y s n i m l a c i p y t x a m t i n u e g a t l o v t u p n i s u o u n i t n o cn i v3 . 0 - 2 . 3 1v e g a t l o v l a n i m r e t e l b a n e t u p t u on e t u o v3 . 0 - 2 . 3 1v e r u t a r e p m e t t n e i b m ab m a t0 4 - 5 8c e r u t a r e p m e t e g a r o t sr o t s t0 4 - 5 2 1c r e t e m a r a p e l u d o m l o b m y s n i m l a c i p y t x a m s t i n u e g a t l o v t u p n i g n i t a r e p ol l an i v8 . 0 1 2 . 3 1v t n e r r u c t u p n i v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 n i i 7 . 1 2 . 1 9 . 0 5 7 . 0 6 . 0 a t n e r r u c t u p n i d a o l o n l l a 0 0 1 a m t n e r r u c t u p n i f f o e t o m e r 30 1 a m t n e r r u c e l p p i r d e t c e l f e r t u p n i 1 l l a 0 3 a m s m r ) p - p ( t n e r r u c e l p p i r d e t c e l f e r t u p n i 1 l l a 0 4 1 k p a m i 2 t n e i s n a r t t n e r r u c h s u r n i tl l a 5 0 0 . 01 0 . 0a 2 s d l o h s e r h t e g a t l o v n o n r u tl l a 4 . 9 v d l o h s e r h t e g a t l o v f f o n r u tl l a0 . 80 . 90 . 0 1v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 3 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 1. vin = 12v, iout = full load, ta = 25 c. 2. 0 - 20 mhz, 0.1f ceramic cap on output. 3. overshoot at turn on output capacitance is 100f. r e t e m a r a p e l u d o m l o b m y s n i m l a c i p y t x a m s t i n u t n i o p t e s e g a t l o v t u p t u o 1 v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 t u o v 0 2 9 . 4 7 4 2 . 3 0 6 4 . 2 1 7 7 . 1 6 7 4 . 1 0 . 5 3 . 3 5 . 2 8 . 1 5 . 1 0 8 0 . 5 3 5 3 . 3 0 4 5 . 2 9 2 8 . 1 4 2 5 . 1 v n o i t a l u g e r d a o l v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 0 1 0 1 5 5 5 5 . 6 1 5 . 6 1 0 1 0 1 0 1 v m n o i t a l u g e r e n i l v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 0 1 5 3 3 3 6 1 0 1 5 5 5 v m e r u t a r e p m e t r e v o n o i t a l u g e r v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 0 2 2 1 8 5 5 0 3 5 2 0 2 0 1 0 1 v m n o i t a l u g e r e g a t l o v t u p t u o l a t o t v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 0 4 7 2 6 1 3 1 3 1 5 . 2 6 5 . 1 5 5 3 5 2 5 2 v m e s i o n d n a e l p p i r t u p t u o 2 l l a 0 40 0 1 p - p v m e s i o n d n a e l p p i r t u p t u o 2 l l a 0 10 2s m r v m e g n a r t n e r r u c t u p t u ol l at u o i0 3a t i m i l t n e r r u c c d t u p t u ol l am i l t u o i6 . 3 5 . 7a e g r u s t i u c r i c t r o h sl l ae g r u s t u o i 5 3 . 07 . 0a 2 s e m i t n o n r u tl l an o t 2 10 2s m n o n r u t t a t o o h s r e v o 3 l l a 03% e c n a t i c a p a c t u p t u ol l at u o c0 0 0 2 1f
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a r e t e m a r a p e l u d o m l o b m y s n i m l a c i p y t x a m s t i n u e s n o p s e r t n e i s n a r t 4 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 0 . 5 0 0 10 0 2v m e m i t g n i l t t e ss t 0 40 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 0 2v m e m i t g n i l t t e ss t 0 40 8s e s n o p s e r t n e i s n a r t 4 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 3 . 3 0 80 5 1v m e m i t g n i l t t e ss t 0 40 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 5 1v m e m i t g n i l t t e ss t 0 40 8s e s n o p s e r t n e i s n a r t 4 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 5 . 2 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s e s n o p s e r t n e i s n a r t 4 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 8 . 1 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s e s n o p s e r t n e i s n a r t 4 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 5 . 1 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 70 0 1v m e m i t g n i l t t e ss t 0 40 8s output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 4. di/dt = 0.5a/1s, ta = 25 c without external load capacitance. page 4
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 5 control specifications general specifications 1. vin=12v, full load and ta=25 c. 2. see graphs on pages 11 - 13. 3. with remote on/off pin 1 open, the module is on. r e t e m a r a p e l u d o m l o b m y s n i m l a c i p y t x a m s t i n u y c n e i c i f f e 1 v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 9 8 8 8 6 8 3 8 2 8 1 9 0 9 8 8 5 8 4 8 % y c n e u q e r f g n i h c t i w s v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 w s f 0 7 4 0 4 3 0 7 2 0 7 2 0 7 2 0 0 5 0 7 3 0 0 3 0 0 3 0 0 3 0 3 5 0 0 4 0 3 3 0 3 3 0 3 3 z h k e g n a r m i r t e g a t l o v t u p t u o 2 l l a0 9 0 1 1% t h g i e wl l a 9 . 4 g r e t e m a r a p e l u d o m l o b m y s n i m l a c i p y t x a m s t i n u f f o / n o e t o m e r 3 l l an e t u o v v ) f f o t i n u ( w o l l a n g i sl l a3 . 0 - 1v ) n o t i n u ( h g i h l a n g i sl l a8 . 2 2 . 3 1v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 6 note: on/off pin designed to work with an open collector/drain switch. efficiency data module 5.0v 60% 70% 80% 90% 100% 0.30 0.75 1.50 2.25 3.00 output current efficiency 10.8v 12.0v 13.2v module 3.3v 50% 60% 70% 80% 90% 100% 0.30 0.75 1.50 2.25 3.00 output current efficiency 10.8v 12.0v 13.2v module 2.5v 50% 60% 70% 80% 90% 100% 0.30 0.75 1.50 2.25 3.00 output current efficiency 10.8v 12.0v 13.2v module 1.8v 40% 50% 60% 70% 80% 90% 100% 12345 output current efficiency 10.8v 12.0v 13.2v module 1.5v 40% 50% 60% 70% 80% 90% 100% 0.30 0.75 1.50 2.25 3.00 output current efficiency 10.8v 12.0v 13.2v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 7 ripple and noise ripple and noise at full load and 12vdc input, 5.0vdc output and ta=25 c ripple and noise at full load and 12vdc input, 3.3vdc output and ta=25 c 0.1f ceramic cap added at the output. ripple and noise at full load and 12vdc input, 2.5vdc output and ta=25 c ripple and noise at full load and 12vdc input, 1.8vdc output and ta=25 c ripple and noise at full load and 12vdc input, 1.5vdc output and ta=25 c
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 8 transient response transient response: di/dt = 0.5a/s, no external load capacitance vout=5.0v 50% to 100% load transients at 12v input and ta=25 c vout=5.0v 100% to 50% load transients at 12v input and ta=25 c vout=3.3v 50% to 100% load transients at 12v input and ta=25 c vout=3.3v 100% to 50% load transients at 12v input and ta=25 c
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 9 transient response transient response: di/dt = 0.5a/s, no external load capacitance vout=2.5v 50% to 100% load transients at 12v input and ta=25 c vout=2.5v 100% to 50% load transients at 12v input and ta=25 c vout=1.8v 50% to 100% load transients at 12v input and ta=25 c vout=1.8v 100% to 50% load transients at 12v input and ta=25 c
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 10 thermal considerations x7ah-03a150 x7ah-03a180 x7ah-03a500 transient response transient response: di/dt = 0.5a/s, no external load capacitance vout=1.5v 50% to 100% load transients at 12v input and ta=25 c vout=1.5v 100% to 50% load transients at 12v input and ta=25 c x7ah-03a250 x7ah-03a330 derating curve output current (a) output current vs. local ambient temperature and air velocity ambient temperature, ta (?c) 0 60 20 30 70 40 50 85 3 1 2 0 natural convection 200lfm 10 derating curve output current (a) output current vs. local ambient temperature and air velocity ambient temperature, ta (?c) 0 60 20 30 70 40 50 85 3 1 2 0 natural convection 100lfm 200lfm 10
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 11 output voltage set-point adjustment vo tr i m gnd vo tr i m gnd trim down test circuit trim up test circuit output voltage set-point adjustment x7ah-03a500 trim resistor calculation rtrim down = 23.703 vo ? vo, adj ? 13.87 ) kohm ( rtrim up = 4.496 vo, adj ? vo ? 8.25 ) kohm ( 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5 0 30 60 90 120 150 180 210 240 270 300 adjusted outp ut voltage vo,adj (v) trim resistor value rtrim_down(kohm) 5 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 0 30 60 90 120 150 180 210 240 270 300 adjusted outp ut voltage vo,adj(v) trim resistor value,rtrim_up(kohm)
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 12 x7ah-03a330 trim resistor calculation rtrim down = 7.92 vo ? vo, adj ? 4.38 ) kohm ( rtrim up = 2.536 vo, adj ? vo ? 1.21 ) kohm ( output voltage set-point adjustment x7ah-03a250 trim resistor calculation rtrim down = 3.694 vo ? vo, adj ? 7.77 ) kohm ( rtrim up = 1.72 vo, adj ? vo ? 5.62 ) kohm ( 2.97 3 3.04 3.07 3.1 3.13 3.17 3.2 3.23 3.27 3.3 0 30 60 90 120 150 180 210 240 270 300 adjusted output volt age vo,adj (v) trim resistor value rtrim_down(kohm) 3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63 0 30 60 90 120 150 180 210 240 270 300 adjusted output voltage vo,adj(v) trim resistor value,rtrim_up(kohm) 2.25 2.27 2.3 2.33 2.35 2.38 2.4 2.42 2.45 2.48 2.5 0 30 60 90 120 150 180 210 240 270 300 adjusted output voltage vo,adj (v) trim resistor value rtrim_down(kohm) 2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 2.7 2.73 2.75 0 30 60 90 120 150 180 210 240 270 300 adjusted output voltage vo,adj(v) trim resistor value,rtrim_up(kohm)
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 13 x7ah-03a180 trim resistor calculation rtrim down = 3.849 vo ? vo, adj ? 19.23 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 15.4 ) kohm ( output voltage set-point adjustment x7ah-03a150 trim resistor calculation rtrim down = 2.698 vo ? vo, adj ? 14.83 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 11 ) kohm ( 1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 1.78 1.8 0 30 60 90 120 150 180 210 240 270 300 adjusted output voltage vo,adj (v) trim resistor value rtrim_down(kohm) 1.8 1.82 1.84 1.85 1.87 1.89 1.91 1.93 1.94 1.96 1.98 0 30 60 90 120 150 180 210 240 270 300 adjust ed outp ut volt age vo,adj(v) trim resistor value,rtrim_up (kohm) 1.35 1.37 1.38 1.4 1.41 1.43 1.44 1.46 1.47 1.49 1.5 0 30 60 90 120 150 180 210 240 270 300 adjusted output voltage vo,adj (v) trim resistor value rtrim_down(kohm) 1.5 1.51 1.53 1.54 1.56 1.58 1.59 1.61 1.62 1.64 1.65 0 30 60 90 120 150 180 210 240 270 300 adjusted outp ut voltage vo,adj(v) trim resistor value,rtrim_up(kohm)
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 14 mechanical s7ah-03a 0.400 [10.16] 0.60 [15.24] 0.70 [17.78] 0.050 [1.27] 0.100 [2.54] 4x 0.400 [10.16] 0.012 [0.30] 0.050 [1.27] 0.020 [0.51] 0.320 [8.13] 0.780 [19.81] 0.055 [1.40] 2x 0.090 [2.29] 2x 0.004 [0.10] 0?-5? r0.015 [r0.38] typ r0.008 [r0.20] typ 0.100 [2.54] 0.855 [21.72] 0.065 [1.65] 0.110 [2.79] suggested pcb pad layout dimensions are in inches [millimeters]. standard dimension tolerance is ?.005 [0.13] unless otherwise noted. 1 2 3 4 5 6 7 n i p n o i t c n u f 1f f o / n o e t o m e r 2n i v + 3d n u o r g 4o v + 5m i r t 6n o i t c e n n o c o n 7n o i t c e n n o c o n
corporate bel fuse inc. 206 van vorst street jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com far east bel fuse ltd. 8f / 8 luk hop street san po kong kowloon, hong kong tel 852-2328-5515 fax 852-2352-3706 www.belfuse.com europe bel fuse europe ltd. preston technology management centre marsh lane, suite g7, preston lancashire, pr1 8ud, u.k. tel 44-1772-556601 fax 44-1772-888366 www.belfuse.com ?2003 bel fuse inc. specifications subject to change without notice. 06.03 power products non-isolated dc/dc converters bp02x7ah-03a 12v input / 1.5v ? 5.0v output / 3a page 15 mechanical v7ah-03a 0.700 [17.78] 0.600 [15.24] 0.050 [1.27] 0.265 [6.73] min 0.020 [0.51] 0.308 [7.82] 0.050 [1.27] 0.100 [2.54] 0.400 [10.16] dimensions are in inches [millimeters]. standard dimension tolerance is ?.005 [0.13] unless otherwise noted. 2 4 3 5 1 n i p n o i t c n u f 1f f o / n o e t o m e r 2n i v + 3d n u o r g 4o v + 5m i r t

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