1 www.semtech.com ez1082 10.0a positive voltage regulator power management revision: august 1, 2007 the ez1082 is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at 10a. additionally, the ez1082 provides excellent regulation over variations in line, load and temperature. features include 1.4v dropout at 10a, fast transient response, internal current limiting and thermal shutdown protection of the output device. the ez1082 series are three terminal regulators with fixed and adjustable voltage options available in the popular to-220 package. the ez1082 is an excellent choice for powering microprocessor systems. using an ldo eliminates mosfets and inductors saving both space and cost. an ldo also provides better transient response with no ripple to the load. ? low dropout performance, 1.4v max. ? full current rating over line and temperature ? fast transient response ? 2% total output regulation over line, load and temperature ? adjust pin current max 90a over temperature ? fixed/adjustable output voltage ? line regulation typically 0.015% ? load regulation typically 0.05% ? to-220 3 pin package. available in pb-free plating, rohs compliant ? high current microprocessor supplies ? post regulators ? microprocessor systems ? medical equipment ? embedded systems ? post regulation for switching supplies ? telecommunication systems fixed voltage regulator adjustable voltage regulator description features applications typical application circuit vin > 4.75v vout = 3.45v vout = 3.3v vin > 4.75v u1 ez1082 1 2 3 adj out in tab + c2 10uf tant. min. r1 133 ohm, 1% + c1 10uf tant. u1 ez1082-3.3 1 2 3 gnd out in tab r2 232 ohm, 1% + c1 10uf tant. + c2 10uf tant. min notes: (1) c1 needed if device is far from filter capacitors (2) c2 minimum value required for stability 2 r i 1 r 2 r 1 v v adj ref out ? + ? ? ? ? ? ? + ? =
2 ? 2007 semtech corp. www.semtech.com ez1082 power management unless otherwise specified: adj. v in = 2.75v to 7.0v and adj. i o = 10ma to 10.0a; fixed v in = 4.75 to 7.0v and fixed i o = 0 ma to 10.0a r e t e m a r a pl o b m y sm u m i x a ms t i n u e g a t l o v y l p p u s t u p n iv n i 7v n o i t a p i s s i d r e w o pp d d e t i m i l y l l a n r e t n iw e s a c o t n o i t c n u j e c n a t s i s e r l a m r e h t c j 3w / c t n e i b m a o t n o i t c n u j e c n a t s i s e r l a m r e h t a j 0 5w / c e g n a r e r u t a r e p m e t n o i t c n u j g n i t a r e p ot j 5 2 1 o t 0c e g n a r e r u t a r e p m e t e g a r o t st g t s 0 5 1 o t 5 6 -c . c e s 0 1 ) g n i r e d l o s ( e r u t a r e p m e t d a e lt d a e l 0 0 3c r e t e m a r a pl o b m y sv n i i o t j ) 4 ( n i mp y tx a ms t i n u e g a t l o v t u p t u o ) 1 ( v o v 5a m oc 5 2v l 9 9 . 0 o lv o v l 1 0 . 1 o lv n o i s r e v e g a t l o v d e x i f. t . ov l 8 9 . 0 o lv o v l 2 0 . 1 o l e g a t l o v e c n e r e f e r ) 1 ( v f e r v 5a m 0 1c 5 28 3 2 . 10 5 2 . 12 6 2 . 1v n o i s r e v e g a t l o v j d a. t . o5 2 2 . 10 5 2 . 15 7 2 . 1 n o i t a l u g e r e n i l ) 1 ( g e r ) e n i l ( a m 0 1c 5 25 1 0 . 02 . 0% . t . o5 3 0 . 02 . 0 n o i t a l u g e r d a o l ) 1 ( g e r ) d a o l ( v 5c 5 25 0 . 03 . 0% . t . o2 . 04 . 0 e g a t l o v t u o p o r dv d c 5 22 . 1v ? v t u o , ? v f e r % 1 = . t . o2 . 14 . 1 t i m i l t n e r r u ci l c . t . o0 . 0 12 1a t n e r r u c t n e c s e i u q n o i s r e v e g a t l o v d e x i f i q v 5. t . o2 14 1a m t n e i c i f f e o c e r u t a r e p m e tt c . t . o5 0 0 . 0c / % absolute maximum ratings electrical characteristics exceeding the specifications below may result in permanent damage to the device, or device malfunction. operation outside of th e parameters specified in the electrical characteristics section is not implied.
3 ? 2007 semtech corp. www.semtech.com ez1082 power management notes: (1) low duty cycle pulse testing with kelvin connections required. (2) bandwidth of 10 hz to 10 khz. (3) 120 hz input ripple (c adj for adj = 25f). (4) over temp. (o.t.) = over specified operating junction temperature range. r e t e m a r a pl o b m y sv n i i o t j ) 4 ( n i mp y tx a ms t i n u t n e r r u c n i p t s u j d ai j d a c 5 25 5a . t . o0 9 t n e r r u c n i p t s u j d a e g n a h c ? i j d a . t . o2 . 05a y t i l i b a t s e r u t a r e p m e tt s v 5a 5 . 0. t . o5 . 0% t n e r r u c d a o l m u m i n i m n o i s r e v e g a t l o v j d a i o v 5. t . o50 1a m e s i o n t u p t u o s m r ) 2 ( v n c 5 23 0 0 . 0v % o o i t a r n o i t c e j e r e l p p i r ) 3 ( r a v 5a 0 . 0 1. t . o0 62 7b d electrical characteristics (cont.)
4 ? 2007 semtech corp. www.semtech.com ez1082 power management notes: (1) where x.x denotes voltage options. available voltages are: 2.5v and 3.3v. leave blank for adjust- able version (1.3 to 5.7v). contact factory for addi- tional voltage options. (2) only available in tube packaging. a tube contains 50 devices. (3) available in pb-free plating, rohs compliant. e c i v e d ) 2 ( ) 1 ( e g a k c a p ) 3 ( t x . x - t c 2 8 0 1 z e 0 2 2 - o t pin configuration ordering information block diagram
5 ? 2007 semtech corp. www.semtech.com ez1082 power management outline drawing - to-220 h1 d d1 l a2 d2 l1 seating plane 2x e e1 3 x b2 3 x b ? p e1 ccc b a 6.86 .270 .350 8.90 .030 0.76 6.86 5.84 .270 .230 .139 .156 3.53 - 3.96 .140 .027 .057 1.45 0.69 - - - - - - - - - - - - .250 6.35 - - - - - - - - - 0.36 .014 0.38 .015 0.25 .010 3.56 dimensions inches nom e1 l1 aaa ccc bbb ?p q n e1 h1 l e2 e dim b d1 d2 e b2 c d a a2 a1 min millimeters max min max nom .100 bsc .200 bsc 3 .380 .355 .015 3 9.02 2.54 bsc 5.08 bsc .420 9.65 .040 0.38 10.66 1.02 8.38 .330 .100 - .500 .014 - .080 .020 - - - .120 2.54 - 3.05 - .580 .024 12.70 0.36 .190 .115 .055 0.51 2.03 0.61 14.73 - 1.40 4.82 2.92 - - dimensions "d" and "e" do not include mold flash, protrusions or gate burrs. controlling dimensions are in inches. notes: 1. 2. 1.14 .045 .070 1.78 14.22 .650 .560 - 16.51 - .480 12.88 12.19 .507 e e/2 q e2 a a c bbb b a c aaa b a b a1 h c n a r b n a w i a t 0 8 3 3 - 8 4 7 2 - 2 - 6 8 8 : l e t fx a0 9 3 3 - 8 4 7 2 - 2 - 6 8 8 : h b m g d n a l r e z t i w s h c e t m e s h c n a r b n a p a j 0 5 9 0 - 8 0 4 6 - 3 - 1 8 : l e t 1 5 9 0 - 8 0 4 6 - 3 - 1 8 : x a f h c n a r b a e r o k tl e7 7 3 4 - 7 2 5 - 2 - 2 8 : f6 7 3 4 - 7 2 5 - 2 - 2 8 : x a ) . k . u ( d e t i m i l h c e t m e s 0 0 6 - 7 2 5 - 4 9 7 1 - 4 4 : l e t 1 0 6 - 7 2 5 - 4 9 7 1 - 4 4 : x a f e c i f f o i a h g n a h s t0 3 8 0 - 1 9 3 6 - 1 2 - 6 8 : l e 1 3 8 0 - 1 9 3 6 - 1 2 - 6 8 : x a f l r a s e c n a r f h c e t m e s 0 0 - 2 2 - 8 2 - 9 6 1 ) 0 ( - 3 3 : l e t 8 9 - 2 1 - 8 2 - 9 6 1 ) 0 ( - 3 3 : x a f f o y r a i d i s b u s d e n w o - y l l o h w a s i g a l a n o i t a n r e t n i h c e t m e s . a . s . u e h t n i s r e t r a u q d a e h s t i s a h h c i h w , n o i t a r o p r o c h c e t m e s h b m g y n a m r e g h c e t m e s 3 2 1 - 0 4 1 - 1 6 1 8 ) 0 ( - 9 4 : l e t 4 2 1 - 0 4 1 - 1 6 1 8 ) 0 ( - 9 4 : x a f contact information for semtech international ag
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