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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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 SRAH-07C and vrah-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 SRAH-07C / vrah-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 r s0 5 2 c 7 0 - h a r v v 8 . 1v 3 . 3a 7w 6 . 2 1% 8 80 8 1 c 7 0 - h a r s0 8 1 c 7 0 - h a r v v 5 . 1v 3 . 3a 7w 5 . 0 1% 6 80 5 1 c 7 0 - h a r s0 5 1 c 7 0 - h a r v v 2 . 1v 3 . 3a 7w 4 . 8% 3 80 2 1 c 7 0 - h a r s0 2 1 c 7 0 - h a r v v 9 . 0v 3 . 3a 7w 3 . 6% 0 80 9 0 c 7 0 - h a r s0 9 0 c 7 0 - h a r v v 5 . 2 - v 9 . 0v 3 . 3a 7w 5 . 7 1% 2 90 a 1 c 7 0 - h a r s0 a 1 c 7 0 - h a r v rohs compliant
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 8 thermal considerations vrah-07c SRAH-07C
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-07c 3.3v input / 0.9v ? 2.5v output / 7a output voltage set-point adjustment xrah-07c180 trim resistor calculation rtrim down = 3.8488 vo ? vo, adj ? 18.83 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 15 ) kohm ( xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-07c 3.3v input / 0.9v ? 2.5v output / 7a output voltage set-point adjustment xrah-07c120 trim resistor calculation rtrim down = 0.622 vo ? vo, adj ? 4.15 ) kohm ( rtrim up = 1.232 vo, adj ? vo ? 2.61 ) kohm ( xrah-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-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 xrah-07c1a0 trim resistor calculation rtrim down = 3.8488 vo ? vo, adj ? 4.091 ) kohm ( rtrim up = 3.064 vo, adj ? vo ? 0.261 ) kohm ( note: default output voltage of SRAH-07C1a0 is 1.8v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 13 mechanical SRAH-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 ?2006 bel fuse inc. specifications subject to change without notice. 02.06 power products non-isolated dc/dc converters bp06xrah-07c 3.3v input / 0.9v ? 2.5v output / 7a page 14 mechanical vrah-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 rohs compliance complies with the european directive 2002/95/ec, calling for the elimination of lead and other hazardous substances from electronic products. these parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240oc.

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