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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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a 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 -40 to +85 c description the bel S7AH-07C and v7ah-07c modules are a series of non-isolated, step down dc/dc power converters that operate from a nominal 3.3v source. these converters are available in a range of output voltages from 0.9v to 2.5v. they are pack- aged in a compact, overmolded package rated at 7a. 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 3.3v source is available. typical applications include file servers, routers, line cards and other computing and communications equipment. applications page 1 S7AH-07C / v7ah-07c series distributed power architectures data networking equipment telecommunications computers and peripherals part number selection options wide range adjustable output 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 5 . 2v 3 . 3a 7w 5 . 7 1% 2 90 5 2 c 7 0 - h a 7 s0 5 2 c 7 0 - h a 7 v v 8 . 1v 3 . 3a 7w 6 . 2 1% 8 80 8 1 c 7 0 - h a 7 s0 8 1 c 7 0 - h a 7 v v 5 . 1v 3 . 3a 7w 5 . 0 1% 6 80 5 1 c 7 0 - h a 7 s0 5 1 c 7 0 - h a 7 v v 2 . 1v 3 . 3a 7w 4 . 8% 3 80 2 1 c 7 0 - h a 7 s0 2 1 c 7 0 - h a 7 v v 9 . 0v 3 . 3a 7w 3 . 6% 0 80 9 0 c 7 0 - h a 7 s0 9 0 c 7 0 - h a 7 v v 5 . 2 - v 9 . 0v 3 . 3a 7w 5 . 7 1% 2 90 a 1 c 7 0 - h a 7 s0 a 1 c 7 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a 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 - 6v 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 - 6v 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 v3 6 . 3v t n e r r u c t u p n i v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 n i i 6 . 6 3 . 5 6 . 4 8 . 3 0 . 3 a t n e r r u c t u p n i d a o l o n l l a 0 1 1 a m t n e r r u c t u p n i f f o e t o m e r 75 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 50 8 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 10 5 2k 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 8 0 . 06 1 . 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 a5 . 2 8 . 2v d l o h s e r h t e g a t l o v f f o n r u tl l a 4 . 2 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 3 output specifications note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 1. vin = 3.3v, iout = full load, ta = 25 c. 2. 0 - 20mhz, 1f ceramic cap and 10f aluminum cap on output. 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 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 t u o v 0 5 4 . 2 4 6 7 . 1 0 7 4 . 1 6 7 1 . 1 2 8 8 . 0 0 0 5 . 2 0 0 8 . 1 0 0 5 . 1 0 0 2 . 1 0 0 9 . 0 0 5 5 . 2 6 3 8 . 1 0 3 5 . 1 4 2 2 . 1 8 1 9 . 0 v n o i t a l u g e r d a o l v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 3 3 3 1 1 0 1 0 1 0 1 5 5 v m n o i t a l u g e r e n i l v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 3 3 3 1 1 0 1 0 1 0 1 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 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 0 2 5 1 5 1 0 1 8 0 4 0 3 0 3 0 2 5 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 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 6 2 1 2 1 2 2 1 0 1 0 6 0 5 0 5 0 3 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 v 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 0 4 0 4 0 4 0 4 0 4 0 8 0 8 0 8 0 8 0 7 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 7a 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 i4 . 8 6 1a 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 8 0 . 02 1 . 0a 2 s e m i t n o n r u tl l an o t 75 1s m n o n r u t t a t o o h s r e v ol l a 01% 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
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a output specifications 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 . 2 0 2 10 8 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 2 10 8 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 8 . 1 0 2 10 8 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 2 10 8 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 5 . 1 0 0 10 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 0 10 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 2 . 1 0 50 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 50 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 3 ? d a o l x a m f o % 0 0 1 o t % 0 5 v v 9 . 0 0 50 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 50 0 1v m e m i t g n i l t t e ss t 0 40 8s note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 3. 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 5 control specifications general specifications 1. vin=3.3v, full load and ta=25 c. 2. see graphs on page 9. 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 . 1 6 . 3v 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 5 . 2 v 8 . 1 v 5 . 1 v 2 . 1 v 9 . 0 0 9 6 8 4 8 1 8 8 7 2 9 8 8 6 8 3 8 0 8 % y c n e u q e r f g n i h c t i w s l l a w s f 0 5 20 0 30 4 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 v 8 . 10 5 6 4 1% t h g i e wl l a 5 g note: on/off pin designed to work with an open collector/drain switch.
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 6 efficiency data module 2.5v 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.71.83.55.37.0 output current efficiency 3 3.3 3.6 module 1.8v 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.7 1.8 3.5 5.3 7.0 output current efficiency 3 3.3 3.6 module 1.5v 55% 60% 65% 70% 75% 80% 85% 90% 95% 0.7 1.8 3.5 5.3 7.0 output current efficiency 3 3.3 3.6 module 1.2v 50% 55% 60% 65% 70% 75% 80% 85% 90% 0.71.83.55.37.0 output current efficiency 3 3.3 3.6 module 0.9v 55% 60% 65% 70% 75% 80% 85% 90% 95% 0.7 1.8 3.5 5.3 7.0 output current efficiency 3 3.3 3.6
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 7 ripple and noise ripple and noise at full load and 3.3vdc input, 1.8vdc output and ta=25 c 1f ceramic cap and 10f aluminum cap added at the output. transient response transient response: di/dt = 0.5a/s, no external load capacitance vout=1.8v 50% to 100% load transients at 3.3v input and ta=25 c vout=1.8v 100% to 50% load transients at 3.3v 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 8 thermal considerations v7ah-07c S7AH-07C
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a 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-07c250 trim resistor calculation rtrim down = 6.4943 vo ? vo, adj ? 13.83 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 10 ) kohm ( page 9
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a output voltage set-point adjustment x7ah-07c180 trim resistor calculation rtrim down = 3.8488 vo ? vo, adj ? 18.83 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 15 ) kohm ( x7ah-07c150 trim resistor calculation rtrim down = 1.7874 vo ? vo, adj ? 11.7 ) kohm ( rtrim up = 2.088 vo, adj ? vo ? 9.09 ) kohm ( page 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a output voltage set-point adjustment x7ah-07c120 trim resistor calculation rtrim down = 0.622 vo ? vo, adj ? 4.15 ) kohm ( rtrim up = 1.232 vo, adj ? vo ? 2.61 ) kohm ( x7ah-07c090 trim resistor calculation rtrim up = 0.3064 vo, adj ? vo ? 0.178 ) kohm ( page 11
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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 12 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-07c1a0 trim resistor calculation rtrim down = 3.8488 vo ? vo, adj ? 4.091 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 0.261 ) 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 13 mechanical S7AH-07C 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. 02.03 power products non-isolated dc/dc converters bp03x7ah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 14 mechanical v7ah-07c 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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