1 www.semtech.com sc5205 150ma ultra low dropout, low noise micropower linear regulator power management revision: march 8, 2006 the sc5205 is a 150ma ultra low dropout linear regulator with a built in cmos/ttl logic level enable switch. it is designed specifically for battery powered applications where low quiescent current and low dropout are critical for battery longevity. the sc5205 uses a semtech proprietary internal pnp device for the pass element, providing a low dropout voltage of 165mv at a load of 150ma, while maintaining a ground pin current of 2750a. the output noise is reduced by placing a 10nf capacitor on pin 4 (bypass). each device contains a bandgap reference, error amplifier, pnp pass element, thermal and current limiting circuitry and resistor divider network for setting output voltage. the sc5205 is packaged in a 5 pin sot-23 surface mount package for a very small footprint and it requires only a 1f capacitor on the output and a 0.01f on the bypass pin for a minimum amount of external components. ? ? ? ? ? ultra low dropout voltage - 165mv @ 150ma ? ? ? ? ? guaranteed 150ma output current ? ? ? ? ? low ground pin current at all loads ? ? ? ? ? <5a quiescent current in shutdown ? ? ? ? ? wide input supply voltage range 2.5v to 16v in ? ? ? ? ? wide output voltage range ? ? ? ? ? excellent line regulation ? ? ? ? ? industrial temperature range ? ? ? ? ? surface mount packaging (5 pin sot-23) ? ? ? ? ? lead-free packaging available, fully weee and rohs compliant ? ? ? ? ? battery powered systems ? ? ? ? ? cellular telephones ? ? ? ? ? cordless telephones ? ? ? ? ? pagers ? personal digital assistants ? ? ? ? ? portable instrumentation ? ? ? ? ? cameras ? portable consumer equipment ? ? ? ? ? pcmcia cards en vin vo + c1 1uf u1 sc5205 1 2 3 4 5 vin gnd en byp vo + c3 1uf c2 10nf description features applications typical application circuit notes: (1) c in (c1) is needed if the device is far from the supply?s filter capacitors, or for operation from a battery. a value of 1.0f or greater should be used. c in may be tantalum or aluminum electrolytic. (2) c o (c3) should be a 1f or greater tantalum or aluminum electrolytic capacitor. larger value capacitors will improve the overall transient response. (3) c byp (c2 - required) should be placed as close as possible to pin 4 and ground. a 10nf ceramic capacitor is recommended. (4) en may be tied to v in if the shutdown feature is not required. maximum en voltage = v in .
2 ? 2006 semtech corp. www.semtech.com sc5205 power management unless specified: vin = vo (nom) + 1v, i o = 100a, c byp = 10nf, c o = 1f, v enable 1.8v. values in bold apply over the full operating temperature range. r e t e m a r a pl o b m y ss t i m i ls t i n u e g a t l o v y l p p u s t u p n in i v0 2 + o t 3 . 0 -v 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 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 6 5 2w / c 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 1 8w / c e g n a r e r u t a r e p m e t t n e i b m a g n i t a r e p ot a 4 -5 8 + o t 0c 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 4 -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 ) l e d o m y d o b n a m u h ( g n i t a r d s ev d s e 2v k r e t e m a r a pl o b m y ss n o i t i d n o c t s e tn i mp y tx a ms t i n u e g n a r e g a t l o v y l p p u sn i v 5 . 26 1 v e g a t l o v t u p t u oo v% 1 -o v% 1 +v % 3 -% 3 + e g a t l o v t u p t u o t n e i c i f f e o c e r u t a r e p m e t c t0 4c / m p p n o i t a l u g e r e n i lg e r ) e n i l ( o v ( = n i v ) m o n ( v 6 1 o t ) v 1 +6 0 . 02 1 . 0v / % 5 1 . 0 n o i t a l u g e r d a o lg e r ) d a o l ( i o a m 0 5 1 o t a m 1 . 0 =1 0 0 . 04 0 0 . 0a m / % 7 0 0 . 0 e g a t l o v t u o p o r d ) 1 ( v d i o a 0 0 1 =50 1v m 5 2 i o a m 0 5 =0 0 10 5 1v m 0 0 2 i o a m 0 0 1 =0 4 10 0 2v m 0 5 2 i o a m 0 5 1 =5 6 10 5 2v m 0 0 3 absolute maximum ratings electrical characteristics exceeding the specifications below may result in permanent damage to the device or device malfunction. operation outside of the parameters specified in the electrical characteristics section is not implied. exposure to absolute maximum rated conditions for extended periods of time may affect device reliability.
3 ? 2006 semtech corp. www.semtech.com sc5205 power management r e t e m a r a pl o b m y ss n o i t i d n o c t s e tn i mp y tx a ms t i n u t n e r r u c n i p d n u o r gi d n g i o a 0 0 1 =0 85 2 1a 0 5 1 i o a m 0 5 =0 0 60 0 0 1a 0 0 5 1 i o a m 0 0 1 =0 0 6 10 0 1 2a 0 0 6 2 i o a m 0 5 1 =0 5 7 20 0 3 3a 0 0 0 4 v n e ) n w o d t u h s ( v 4 . 0 <1 0 . 0 5 a t i m i l t n e r r u c ) 2 ( i m i l o v ( > o v ) m o n ( ) % 5 -0 0 3 0 0 5 a m o i t a r n o i t c e j e r e l p p i rr r s pi o z h 0 0 1 = f , a 0 0 1 =0 5b d n o i t a l u g e r l a m r e h t 5 0 . 0w / % e s i o n t u p t u o s m re n i o c , a m 0 5 = p y b c , f n 0 1 = o , f 2 . 2 = z h k 9 9 o t z h 0 1 = w b 0 1 2 e g a t l o v t u p n i e l b a n ev n e f f o p / o = w o l 4 . 0 v n o p / o = h g i h 0 . 2 t n e r r u c t u p n i e l b a n ei n e v n e v 4 . 01 0 . 0 - 1 - a v n e v 8 . 150 1a 0 2 d p vo ? unless specified: vin = vo (nom) + 1v, i o = 100a, c byp = 10nf, c o = 1f, v enable 1.8v. values in bold apply over the full operating temperature range. electrical characteristics (cont.) notes: (1) defined as the input to output differential at which the output voltage drops to 2% below the value measured at a differential of 1v. (2) as the load resistance further decreases, the sc5205 folds back the output current to approximately 150ma at v o = 0v. hz nv
4 ? 2006 semtech corp. www.semtech.com sc5205 power management e c i v e d ) 2 ( ) 1 ( e g a k c a p r t k s c x . x - 5 0 2 5 c s 3 2 - t o s n i p 5 t r t k s c x . x - 5 0 2 5 c s ) 3 ( notes: (1) where -x.x denotes voltage options. available voltages are: 1.8v, 2.5v, 2.8v, 3.0v, 3.3v, 3.6v, 3.8v, 4.0v and 5.0v. (2) only available in tape and reel packaging. a reel contains 3000 devices. (3) lead free packaging. this product is fully weee and rohs compliant. n i pe m a n n i pn o i t c n u f n i p 1n i v. t u p n i e g a t l o v y l p p u s 2d n g. d n u o r g 3n e. d e s u g n i e b t o n f i n i v o t t c e n n o c . t u p n i e l b a n e h g i h e v i t c a 4p y b e c u d e r o t d n g d n a n i p s i h t n e e w t e b ) d e r i u q e r ( r o t i c a p a c f n 0 1 a t c e n n o c . s s a p y b e c n e r e f e r e s i o n t u p t u o 5o v. t u p t u o e g a t l o v pin configuration ordering information block diagram pin descriptions top view sot-23-5
5 ? 2006 semtech corp. www.semtech.com sc5205 power management outline drawing - sot-23-5 land pattern - sot-23-5 .110 bsc .037 bsc detail aaa c seating plane c ccc c 2x n/2 tips 2x e/2 5 see detail a1 a a2 bxn d a .008 12 n e1 e d .060 .114 .063 .118 .010 - 5 a 0.20 1.60 3.00 2.80 bsc 0.95 bsc .069 1.50 2.90 .020 0.25 1.75 0.50 - ei l (l1) c 01 0.25 plane gage h 2.80 .110 bbb c a-b d a b e 0 .008 - .004 .012 .003 (.024) .018 - .035 .000 .035 - - .045 0.10 0.20 10 0 - 10 1.15 (0.60) 0.45 .024 .009 0.30 0.08 .057 .051 .006 0.00 .90 0.90 0.22 0.60 - 0.15 1.45 1.30 - - 1.90 bsc .075 bsc dimensions "e1" and "d" do not include mold flash, protrusions datums and to be determined at datum plane or gate burrs. controlling dimensions are in millimeters (angles in degrees). notes: 1. 3. 2. -a- -b- -h- dimensions inches l1 aaa bbb ccc 01 n dim e e1 l e e1 c d a a2 b a1 min nom millimeters nom max min max side view dimensions inches y z dim g p x c millimeters p (c) z y g .043 .141 .055 (.098) .037 .024 1.40 (2.50) 0.95 0.60 1.10 3.60 x dimensions inches y z dim g p x c millimeters this land pattern is for reference purposes only. consult your manufacturing group to ensure your company's manufacturing guidelines are met. notes: 1. 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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