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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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a 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-05a and v7ah-05a 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 0.9v to 5.0v. they are packaged in a compact, overmolded package rated at 5a. 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 circuit protecti on, output voltage adjust and industrial temperature ranges (-40 to +85 c). the output is closely regulated and the efficiency is typically 91.5% at full load. 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-05a / v7ah-05a 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 5w 5 2% 5 . 1 90 0 5 a 5 0 - h a 7 s0 0 5 a 5 0 - h a 7 v v 0 . 5v 2 1a 5w 5 2% 5 . 1 9* f 0 5 a 5 0 - h a 7 s* f 0 5 a 5 0 - h a 7 v v 3 . 3v 2 1a 5w 5 . 6 1% 8 80 3 3 a 5 0 - h a 7 s0 3 3 a 5 0 - h a 7 v v 5 . 2v 2 1a 5w 5 . 2 1% 6 80 5 2 a 5 0 - h a 7 s0 5 2 a 5 0 - h a 7 v v 8 . 1v 2 1a 5w 0 . 9% 3 80 8 1 a 5 0 - h a 7 s0 8 1 a 5 0 - h a 7 v v 5 . 1v 2 1a 5w 5 . 7% 1 80 5 1 a 5 0 - h a 7 s0 5 1 a 5 0 - h a 7 v v 2 . 1v 2 1a 5w 0 . 6% 8 70 2 1 a 5 0 - h a 7 s0 2 1 a 5 0 - h a 7 v v 0 . 1v 2 1a 5w 0 . 5% 6 70 0 1 a 5 0 - h a 7 s0 0 1 a 5 0 - h a 7 v v 9 . 0v 2 1a 5w 5 . 4% 3 70 9 0 a 5 0 - h a 7 s0 9 0 a 5 0 - h a 7 v v 3 6 . 3 ~ 9 . 0v 2 1a 5w 2 . 8 1% 8 80 a 1 a 5 0 - h a 7 s0 a 1 a 5 0 - h a 7 v v 3 6 . 3 ~ 9 . 0v 2 1a 5w 2 . 8 1% 8 8* f a 1 a 5 0 - h a 7 s* f a 1 a 5 0 - h a 7 v * f indicates fast start up.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a 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 one 270f/16v, esr = 0.018 ? 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 - 5 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 - 5 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 v 2 . 1 v 0 . 1 v 9 . 0 n i i 8 . 2 0 . 2 5 . 1 2 . 1 0 . 1 8 . 0 7 . 0 5 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 5 a m t n e r r u c t u p n i f f o e t o m e rl l a 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 5 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 5 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 6 0 0 . 02 1 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 8 . 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 a5 . 80 . 96 . 9v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a 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. 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 v 2 . 1 v 0 . 1 v 9 . 0 t u o v 9 . 4 7 4 2 . 3 0 6 4 . 2 1 7 7 . 1 6 7 4 . 1 1 8 1 . 1 4 8 9 . 0 6 8 8 . 0 5 3 . 3 5 . 2 8 . 1 5 . 1 2 . 1 0 . 1 9 . 0 1 . 5 3 5 3 . 3 0 4 5 . 2 9 2 8 . 1 4 2 5 . 1 9 1 2 . 1 6 1 0 . 1 4 1 9 . 0 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 v 2 . 1 v 0 . 1 v 9 . 0 5 1 8 8 5 5 5 5 4 0 3 0 2 0 2 5 1 5 1 5 1 5 1 5 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 v 2 . 1 v 0 . 1 v 9 . 0 3 3 3 2 2 2 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 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 ) c 5 8 o t 0 4 - (v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 0 4 0 4 5 3 0 2 5 1 0 1 6 5 0 7 0 7 0 7 0 4 0 3 0 2 2 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 ) c 5 8 o t 0 4 - (v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 8 5 1 5 6 4 7 2 2 2 7 1 2 1 0 1 0 1 1 0 0 1 0 0 1 5 6 5 4 5 4 7 3 5 3 v m
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 2. 0 - 20mhz, 22f/6.3v x5r ceramic cap on output (10f/10v x5r ceramic cap for 5.0v module). 3. for fast start up modules. 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 i o n d n a e l p p i r t u p t u o 2 v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 0 7 0 7 0 6 0 5 0 5 0 4 0 3 0 3 0 0 1 0 0 1 0 0 1 0 0 1 0 8 0 8 0 6 0 6 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 v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 0 3 0 3 0 3 0 2 0 2 5 1 5 1 0 1 0 6 0 6 0 6 0 4 0 4 0 3 0 3 0 2 s 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 5a 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 5 . 2 1a e g r u s t i u c r i c t r o h s v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 e g r u s t u o i 9 . 0 0 6 . 0 0 7 . 0 5 8 . 0 5 8 . 0 5 0 . 1 1 . 1 1 . 1 8 . 1 2 . 1 4 . 1 7 . 1 7 . 1 1 . 2 2 . 2 2 . 2 a 2 s e m i t n o n r u t v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 v 9 . 0 n o t 0 8 1 0 3 1 0 3 1 0 3 1 0 3 1 0 3 1 0 3 1 0 3 1 0 3 1 0 5 2 0 0 2 0 0 2 0 0 2 0 0 2 0 0 2 0 0 2 0 0 2 0 0 2 s m e m i t n o n r u t 3 v 0 . 5 - v 9 . 0n o t 0 10 2s m n o n r u t t a t o o h s r e v ol l a 03% n o n r u t t a t o o h s r e v o 3 v 0 . 5 - 2 . 1 v 0 . 1 - v 9 . 0 0 3 3 0 1 % 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 2f page 4
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 5 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 3. di/dt = 0.5a/us, ta = 25 c. 0.9v ~ 3.3v modules with 220f/6.3v tant cap (5.0v module with 100f/10v tant cap). 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 0 . 5 0 0 10 5 1v m e m i t g n i l t t e ss t 0 60 0 1s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 5 1v m e m i t g n i l t t e ss t 0 60 0 1s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 3 . 3 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 5 . 2 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 8 . 1 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 5 1v m e m i t g n i l t t e ss t 0 50 8s
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 6 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 3. di/dt = 0.5a/us, ta = 25 c. 0.9v ~ 3.3v modules with 220f/6.3v tant cap (5.0v module with 100f/10v tant cap). 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 5 . 1 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 2 . 1 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 0 . 1 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s e s n o p s e r t n e i s n a r t 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 9 . 0 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 2 1v m e m i t g n i l t t e ss t 0 50 8s
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 7 control specifications general specifications 1. vin=12v, full load and ta=25 c. 2. see graphs on pages 17-25. 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 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 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 v 2 . 1 v 0 . 1 v 9 . 0 9 8 6 8 4 8 1 8 9 7 6 7 4 7 1 7 1 9 8 8 6 8 3 8 1 8 8 7 6 7 3 7 % y c n e u q e r f g n i h c t i w s v 3 . 3 ~ v 9 . 0 v 0 . 5 w s f 0 1 2 0 3 3 0 5 2 0 7 3 0 9 2 0 1 4 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 ) m i r t e d i w ( 2 v 9 . 0 3 0 4% e g n a r m i r t e g a t l o v t u p t u o ) m i r t w o r r a n ( 2 v 0 . 5 v 3 . 3 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 0 . 1 v 9 . 0 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 1 1 0 1 1 0 1 1 0 1 1 0 1 1 0 1 1 0 1 1 0 1 1 % t h g i e wl l a 9 . 4 g
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 8 efficiency data module 3.3v 70% 75% 80% 85% 90% 95% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2 module 2.5v 65% 70% 75% 80% 85% 90% 95% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2 module 1.8v 60% 65% 70% 75% 80% 85% 90% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2 module 5. 0v 70% 75% 80% 85% 90% 95% 100% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10. 8 12 13. 2
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a efficiency data module 1.2v 50% 55% 60% 65% 70% 75% 80% 85% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2 module 1.0v 50% 55% 60% 65% 70% 75% 80% 85% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2 module 0.9v 50% 55% 60% 65% 70% 75% 80% 85% 0.50 1.25 2.50 3.75 5.00 output current e fficienc y 10.8 12 13.2 page 9 module 1.5v 60% 65% 70% 75% 80% 85% 90% 0.50 1.25 2.50 3.75 5.00 output current efficiency 10.8 12 13.2
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 10 ripple and noise 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 0.9v ~ 3.3v modules with 22f/6.3v x5r ceramic cap at the output. 5.0v module with 10f/10v x5r ceramic cap at the output. ripple and noise at full load and 12vdc input, 3.3vdc output and ta=25 c ripple and noise at full load and 12vdc input, 5.0vdc 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a ripple and noise ripple and noise at full load and 12vdc input, 1.0vdc output and ta=25 c ripple and noise at full load and 12vdc input, 0.9vdc output and ta=25 c ripple and noise at full load and 12vdc input, 1.2vdc output and ta=25 c page 11 ripple and noise at full load and 12vdc input, 1.5vdc output and ta=25 c 0.9v ~ 3.3v modules with 22f/6.3v x5r ceramic cap at the output. 5.0v module with 10f/10v x5r ceramic cap at the output.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 12 transient response transient response: di/dt = 0.5a/s, 0.9v ~ 3.3v modules with 220f/6.3v tant cap, 5.0v module with 100f/10v tant cap. 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 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
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 13 transient response vout=1.8v 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=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 transient response: di/dt = 0.5a/s, 0.9v ~ 3.3v modules with 220f/6.3v tant cap, 5.0v module with 100f/10v tant cap.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 14 vout=1.0v 50% to 100% load transients at 12v input and ta=25 c vout=1.0v 100% to 50% load transients at 12v input and ta=25 c vout=1.2v 50% to 100% load transients at 12v input and ta=25 c vout=1.2v 100% to 50% load transients at 12v input and ta=25 c transient response 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 transient response: di/dt = 0.5a/s, 0.9v ~ 3.3v modules with 220f/6.3v tant cap, 5.0v module with 100f/10v tant cap.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a x7ah-05a1a0 0.9 ~ 1.8v thermal considerations transient response vout=0.9v 50% to 100% load transients at 12v input and ta=25 c vout=0.9v 100% to 50% load transients at 12v input and ta=25 c page 15 transient response: di/dt = 0.5a/s, 0.9v ~ 3.3v modules with 220f/6.3v tant cap, 5.0v module with 100f/10v tant cap. vin = 12v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a thermal considerations x7ah-05a500 page 16 x7ah-05a1a0 2.5v ~ 3.3v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a page 17 output voltage set-point adjustment x7ah-05a1a0 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 0.261 ) kohm ( vo tr i m gnd vo tr i m gnd trim down test circuit trim up test circuit
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a x7ah-05a090 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 40.2 ) kohm ( page 18 output voltage set-point adjustment
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output voltage set-point adjustment x7ah-05a100 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 3.83 ) kohm ( rtrim down = 0.9516 vo, adj ? vo ? 8.47 ) kohm ( page 19
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output voltage set-point adjustment x7ah-05a120 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 10 ) kohm ( rtrim down = 1.879 vo, adj ? vo ? 14.640 ) kohm ( page 20
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a x7ah-05a150 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 16.2 ) kohm ( rtrim down = 3.273 vo, adj ? vo ? 20.84 ) kohm ( page 21 output voltage set-point adjustment
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output voltage set-point adjustment x7ah-05a180 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 19.6 ) kohm ( rtrim down = 4.669 vo, adj ? vo ? 24.24 ) kohm ( page 22
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a x7ah-05a250 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 13.3 ) kohm ( rtrim down = 7.912 vo, adj ? vo ? 17.94 ) kohm ( output voltage set-point adjustment page 23
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output voltage set-point adjustment x7ah-05a330 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 10 ) kohm ( rtrim down = 11.614 vo, adj ? vo ? 14.64 ) kohm ( page 24
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a output voltage set-point adjustment x7ah-05a500 trim resistor calculation rtrim up = 3.712 vo, adj ? vo ? 6.19 ) kohm ( rtrim down = 19.4618 vo, adj ? vo ? 10.83 ) kohm ( page 25
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a mechanical page 26 s7ah-05a 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp03x7ah-05a 12v input / 0.9v ? 5.0v output / 5a mechanical page 27 v7ah-05a 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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