? 2000 california micro devices corp. all rights reserved. 4/00 215 topaz street, milpitas, california 95035 tel: (408) 263-3214 fax: (408) 263-7846 www.calmicro.com 1 california micro devices pac27a02 preliminary p/active precision voltage divider network for linear technology ltc1266/lt1431 features ? provides a complete pentium regulator solution when combined with a linear technology ltc1266/lt1431 power supply regulator circuit ? miniature sot and soic packages ? thin film tightly ratio matched resistors using p/active technology schematic configuration product description camd?s p/active 27a02 precision voltage divider network is designed to work with the linear technology ltc1266 synchronous regulator controller and lt1431 programmable reference commonly used in pentium p54/p55c power regulator designs. camd?s p/active technology provides precision ratio tracking over temperature/time required for proper voltage regulation by the pentium processor. preliminary refer to ap-202 voltage divider application note for further information. applications ? linear technology pentium 54/55c power supply regulator s n o i t a c i f i c e p s d r a d n a t s ) r ( e c n a r e l o t e t u l o s b a% 5 c 0 ( g n i k c a r t o i t a r t a ) c 0 7 s t l o v 0 1 < r o t s i s e r r e p e g a t l o v ( ) w m 5 2 < r o t s i s e r r e w o p d n a 2 r / 1 r 3 r / ) 2 r + 1 r ( % 0 . 1 % 5 2 . 0 e g n a r e r u t a r e p m e t g n i t a r e p oc 0 7 o t c 0 r o t s i s e r / g n i t a r r e w o pc 0 7 @ w m 5 2 e r u t a r e p m e t e g a r o t sc 0 5 1 o t c 5 6 - g n i t a r r e w o p e g a k c a pc 0 7 @ w 5 2 2 . 0 d r a d n a t s s e u l a v ) r ( r o t s i s e re u l a v 1 r0 5 1 1 2 r0 5 3 1 3 r0 0 0 1 n o i t a m r o f n i g n i r e d r o t r a p d r a d n a t s w o r r a n - e g a k c a pr e b m u n t r a p g n i r e d r o s n i pe l y t ss e b u t s g a b l e e r & e p a tg n i k r a m t r a p 43 4 1 - t o s- b / t 2 0 a 7 2 c a pr / t 2 0 a 7 2 c a pt 2 0 a 8c i o st / s 2 0 a 7 2 c a p-r / s 2 0 a 7 2 c a ps 2 0 a 7 2 c a p c0860400
?2000 california micro devices corp. all rights reserved. 4/00 215 topaz street, milpitas, california 95035 tel: (408) 263-3214 fax: (408) 263-7846 www.calmicro.com 2 california micro devices pac27a02 preliminary switch mode regulator linear regulator application diagram preliminary application diagram preliminary
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