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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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a 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 industrial temperature range description the bel s7ah-02a and v7ah-02a 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 2a. 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 protection , output voltage adjust and industrial temperature ranges (-40 to +85 c). the output is closely regulated and the efficiency is typically 89% 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-02a / v7ah-02a series distributed power architectures data networking equipment part number selection * f indicates fast start up. 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 2w 0 1% 9 80 0 5 a 2 0 - h a 7 s0 0 5 a 2 0 - h a 7 v v 0 . 5v 2 1a 2w 0 1% 9 8* f 0 5 a 2 0 - h a 7 s* f 0 5 a 2 0 - h a 7 v v 3 . 3v 2 1a 2w 6 . 6% 8 80 3 3 a 2 0 - h a 7 s0 3 3 a 2 0 - h a 7 v v 5 . 2v 2 1a 2w 0 . 5% 6 80 5 2 a 2 0 - h a 7 s0 5 2 a 2 0 - h a 7 v v 8 . 1v 2 1a 2w 6 . 3% 2 80 8 1 a 2 0 - h a 7 s0 8 1 a 2 0 - h a 7 v v 5 . 1v 2 1a 2w 0 . 3% 8 70 5 1 a 2 0 - h a 7 s0 5 1 a 2 0 - h a 7 v v 2 . 1v 2 1a 2w 4 . 2% 4 70 2 1 a 2 0 - h a 7 s0 2 1 a 2 0 - h a 7 v v 9 . 0v 2 1a 2w 8 . 1% 0 70 9 0 a 2 0 - h a 7 s0 9 0 a 2 0 - h a 7 v v 3 6 . 3 ~ 9 . 0v 2 1a 2w 3 . 7% 0 70 a 1 a 2 0 - h a 7 s0 a 1 a 2 0 - h a 7 v v 3 6 . 3 ~ 9 . 0v 2 1a 2w 3 . 7% 0 7* f a 1 a 2 0 - h a 7 s* f a 1 a 2 0 - h a 7 v telecommunications computers and peripherals
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a 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: 1. use a 47uf/25v tan capacitor at the input. 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 t5 5 - 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 9 . 0 n i i 2 . 1 5 8 . 0 7 . 0 5 . 0 5 4 . 0 4 . 0 5 3 . 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 0 1 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 0 3 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 1 0 . 02 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 6 . 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 a8 . 8 8 . 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 3 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 1. vin=12v,lout=half 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 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 6 8 8 . 0 0 . 5 3 . 3 5 . 2 8 . 1 5 . 1 2 . 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 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 9 . 0 5 1 0 1 8 5 5 4 3 0 3 0 3 0 2 0 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 v 2 . 1 v 9 . 0 2 2 2 1 1 1 1 5 5 5 5 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 ) 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 9 . 0 5 3 5 3 0 2 5 1 0 1 8 2 5 4 5 4 0 3 5 2 0 2 5 1 5 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 9 . 0 2 5 7 4 0 3 1 2 6 1 3 1 6 0 8 0 8 5 5 0 4 5 3 0 3 0 2 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a output specifications page 4 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 9 . 0 0 6 0 6 0 5 0 4 5 3 5 3 5 3 0 8 0 8 0 7 0 6 0 6 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 9 . 0 5 2 0 2 5 1 5 1 5 1 0 1 0 1 5 3 5 3 5 2 5 2 5 2 0 2 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 2a 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 i 5 . 2 6 a 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 9 . 0 e g r u s t u o i 4 . 0 4 . 0 4 . 0 5 . 0 5 . 0 5 . 0 5 5 . 0 8 . 0 8 . 0 8 . 0 0 . 1 0 . 1 0 . 1 1 . 1 a 2 s e m i t n o n r u t v 3 6 . 3 - v 9 . 0 v 0 . 5 n o t 0 7 0 2 0 0 1 0 4 s m e m i t n o n r u t 3 n 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 - v 5 . 1 v 2 . 1 - v 9 . 0 0 0 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 1 0 0 0 1f note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 2. 0 - 20mhz bw with 100uf tan cap and 1uf ceramic cap. 3. for fast startup modules.
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 5 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 3. di/dt=0.1a/us,ta=25 c with 220uf/10v tan 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 5 10 0 2v m e m i t g n i l t t e ss t 0 0 10 4 1s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 5 10 0 2v m e m i t g n i l t t e ss t 0 0 10 4 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 2 10 5 1v m e m i t g n i l t t e ss t 0 40 6s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 2 10 5 1v m e m i t g n i l t t e ss t 0 40 6s 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 3 1v m e m i t g n i l t t e ss t 0 40 6s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 0 10 3 1v m e m i t g n i l t t e ss t 0 40 6s 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 90 2 1v m e m i t g n i l t t e ss t 0 40 6s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 90 2 1v m e m i t g n i l t t e ss t 0 40 6s
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 6 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 3. di/dt=0.1a/us,ta=25 c with 220uf/10v tan 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 1 1v m e m i t g n i l t t e ss t 0 40 6s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 80 1 1v m e m i t g n i l t t e ss t 0 40 6s 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 70 0 1v m e m i t g n i l t t e ss t 0 40 6s ? 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 6s 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 60 9v m e m i t g n i l t t e ss t 0 40 6s ? d a o l x a m f o % 0 5 o t % 0 0 1 v 0 60 9v m e m i t g n i l t t e ss t 0 40 6s
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 7 control specifications general specifications 1. efficiency is measured at vin=12v, full load and ta=25 c. 2. see graphs on pages 17-25. 3. with remote on/off pin 1 open, unit 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 v 2 . 1 v 9 . 0 6 8 5 8 3 8 9 7 5 7 1 7 7 6 9 8 8 8 6 8 2 8 8 7 4 7 0 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 8 2 0 5 2 0 2 3 0 9 2 0 6 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 ) 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 9 . 0 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 % 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 8 efficiency data module 5.0v 60% 65% 70% 75% 80% 85% 90% 0.20 0.50 1.00 1.50 2.00 output current efficiency 10.8 12 13.2 module 3.3v 55% 60% 65% 70% 75% 80% 85% 90% 95% 0.20 0.50 1.00 1.50 2.00 output current e fficienc y 10.8 12 13.2 module 2.5v 50% 60% 70% 80% 90% 100% 0.20 0.50 1.00 1.50 2.00 output current efficiency 10.8 12 13.2 module 1. 8v 50% 55% 60% 65% 70% 75% 80% 85% 90% 0.20 0.50 1.00 1.50 2.00 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a efficiency data page 9 module 1.5v 45% 50% 55% 60% 65% 70% 75% 80% 85% 0.20 0.50 1.00 1.50 2.00 output current efficiency 10.8 12 13.2 module 1.2v 45% 55% 65% 75% 85% 0.20 0.50 1.00 1.50 2.00 output current efficiency 10.8 12 13.2 module 0.9v 40% 50% 60% 70% 80% 0.20 0.50 1.00 1.50 2.00 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a 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 with 100f tan cap and 1uf 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a ripple and noise 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 with 100f tan cap and 1uf 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 12 transient response transient response: di/dt = 0.1a/s, with 220f tan capacitor. 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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a 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 = 0.1a/s, with 220f tan capacitor..
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 14 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 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 = 0.1a/s, with 220f tan capacitor..
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a x7ah-02a1ax 0.9 ~ 3.3v thermal considerations page 15 vin = 12v x7ah-02a50x
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 16 output voltage set-point adjustment x7ah-02a1ax trim resistor calculation rtrim up = 3.712 vo, adj ? vo ) kohm ( 0.9 1.17 1.45 1.72 1.99 2.26 2.54 2.81 3.08 3.36 3.63 0 5 10 15 20 25 30 35 40 45 50 adjusted output voltage vo,adj(v ) trim resistor value,rtrim_up(kohm) 50 0 rt r i mup vadj _up () 3. 63 0.9 vadj_up note: output voltage vo=0.90 3v when trim pin is not connected. v o t rim gnd r t r s v t rt (kohm) = rs (4.64vt - 3.712) 3.712 - rs(vout - 0.903) ) kohm ( note: output voltage vo=0.90 3v when trim pin is not connected. v o t rim gnd r down r up r set note: output voltage vo=0.90 3v when trim pin is not connected. rset = 3.712 vout - 0.903 rup = 3.712 rset rset vm up - 0.903 rset - 3.712 rdown = 4.64 rset vm down - 3.712 rset 0.903 rset + 3.712 - rset vm down vout is desired output voltage. margin up value after output voltage is set with rset margin down value after output volatge is set with rset vm down > 90% vout ( ) kohm ) kohm ( ) kohm (
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 17 x7ah-02a090 trim resistor calculation output voltage set-point adjustment vo tr i m gnd trim up test circuit 0.9 0.909 0.918 0.927 0.936 0.945 0.954 0.963 0.972 0.981 0.99 0 100 200 300 400 500 600 700 800 900 1000 adjusted output voltage vo,adj(v) trim resistor value,rtrim_up(kohm) 1000 0 rtrimup vadj_up ( ) 0.99 0.9 vadj_up kohm vo adj vo up rtrim ? = , 712 . 3 _ vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=0.903v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. where ,
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 18 output voltage set-point adjustment x7ah-02a120 trim resistor calculation vo tr i m gnd vo tr i m gnd trim down test circuit trim up test circuit kohm adj vo vo down rtrim ? ? = 64 . 4 , 87 . 1 _ kohm vo adj vo up rtrim ? = , 712 . 3 _ where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.203v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.203v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. 1.08 1.09 1.1 1.12 1.13 1.14 1.15 1.16 1.18 1.19 1.2 0 10 20 30 40 50 60 70 80 90 100 adjusted output voltage vo,adj (v) trim resistor value rtrim_down(kohm) 1.2 1.21 1.22 1.24 1.25 1.26 1.27 1.28 1.3 1.31 1.32 20 68 116 164 212 260 308 356 404 452 500 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 19 output voltage set-point adjustment x7ah-02a150 trim resistor calculation kohm adj vo vo down rtrim ? ? = 64 . 4 , 2633 . 3 _ kohm vo adj vo up rtrim ? = , 712 . 3 _ where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.503v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.503v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. 1.35 1.37 1.38 1.4 1.41 1.43 1.44 1.46 1.47 1.49 1.5 0 50 100 150 200 250 300 350 400 450 500 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 0 100 200 300 400 500 600 700 800 900 1000 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 20 output voltage set-point adjustment x7ah-02a180 trim resistor calculation kohm adj vo vo down rtrim ? ? = 64 . 4 , 6538 . 4 _ kohm vo adj vo up rtrim ? = , 712 . 3 _ where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.803v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=1.803v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. 1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 1.78 1.8 0 50 100 150 200 250 300 350 400 450 500 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 50 100 150 200 250 300 350 400 450 500 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 21 x7ah-02a250 trim resistor calculation output voltage set-point adjustment kohm adj vo vo down rtrim ? ? = 64 . 4 , 9117 . 7 _ kohm vo adj vo up rtrim ? = , 712 . 3 _ where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=2.503v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=2.503v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. where , 2.25 2.27 2.3 2.33 2.35 2.38 2.4 2.42 2.45 2.48 2.5 0 50 100 150 200 250 300 350 400 450 500 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 50 100 150 200 250 300 350 400 450 500 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 22 output voltage set-point adjustment x7ah-02a330 trim resistor calculation kohm adj vo vo down rtrim ? ? = 64 . 4 , 614 . 11 _ kohm vo adj vo up rtrim ? = , 712 . 3 _ vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=3.303v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. where , where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=3.303v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. 2.97 3 3.04 3.07 3.1 3.13 3.17 3.2 3.23 3.27 3.3 0 50 100 150 200 250 300 350 400 450 500 adjusted output voltage 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 50 100 150 200 250 300 350 400 450 500 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 23 output voltage set-point adjustment x7ah-02a50x trim resistor calculation kohm adj vo vo down rtrim ? ? = 69 . 13 , 02 . 26 _ kohm vo adj vo up rtrim ? ? = 5 . 7 , 952 . 4 _ vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=5.003v vo , ad j is the ad j usted out p ut volta g e. rtrim-down is the resistance re q uired between trim and vo. where , vo is the nominal out p ut volta g e set p oint when trim p in is o p en , vo=5.003v vo , ad j is the ad j usted out p ut volta g e. rtrim-u p is the resistance re q uired between trim and gnd. where , 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5 0 50 100 150 200 250 300 350 400 450 500 adjusted output 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 50 100 150 200 250 300 350 400 450 500 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 ?2004 bel fuse inc. specifications subject to change without notice. 03.04 power products non-isolated dc/dc converters bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 24 mechanical s7ah-02a 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 0.400 [10.16] 0.60 [15.24] 0.70 [17.78] 0.137 [3.48] 0.100 [2.54] 4x 0.400 [10.16] 0.012 [0.30] 0.050 ?.002 [1.27 ?.05] 0.020 ?.002 [0.51 ?.05] 0.320 [8.13] 0.780 [19.81] 0.055 [1.40] 0.090 [2.29] 2 x 4? 0.050 [1.27] dimensions are in inches [millimeters]. standard dimension tolerance is ?.005 [0.13] unless otherwise noted. 1 2 3 4 5 6 7
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 bp04x7ah-02a 12v input / 0.9v ? 5.0v output / 2a page 25 mechanical v7ah-02a 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 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. 0.13 7 [3.47] 2 4 3 5 1

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