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CEM9425 15985 4TE4Y 2SB1162 74LVC3 ULN2004 87FE52AE M3907
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                                                                                        1 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b g g s s c c 2 2 1 1 2 2 8 8 c c m m o o s s l l o o w w d d r r o o p p o o u u t t v v o o l l t t a a g g e e r r e e g g u u l l a a t t o o r r d e s c r i p t i o n t h e g s c 2 1 2 8 s e r i e s o f p o s i t i v e , l i n e a r r e g u l a t o r s f e a t u r e l o w q u i e s c e n t c u r r e n t ( 4 5  a t y p . ) w i t h l o w d r o p o u t v o l t a g e , m a k i n g t h e m i d e a l f o r b a t t e r y a p p l i c a t i o n s . o u t p u t v o l t a g e s a r e s e t a t t h e f a c t o r y a n d t r i m m e d t o 1 . 5 % a c c u r a c y . t h e s e r u g g e d d e v i c e s h a v e b o t h t h e r m a l s h u t d o w n , a n d c u r r e n t f o l d - b a c k t o p r e v e n t d e v i c e f a i l u r e u n d e r t h e w o r s t o f o p e r a t i n g c o n d i t i o n s . i n a p p l i c a t i o n s r e q u i r i n g a l o w n o i s e , r e g u l a t e d s u p p l y , p l a c e a 1 0 0 0 p f c a p a c i t o r b e t w e e n b y p a s s a n d g r o u n d . t h e g s c 2 1 2 8 i s s t a b l e w i t h a n o u t p u t c a p a c i t a n c e o f 4 . 7  f o r g r e a t e r . f e a t u r e s f u n c t i o n a l b l o c k d i a g r a m & v e r y l o w d r o p o u t v o l t a g e & g u a r a n t e e d 1 . 5 a o u t p u t & o v e r - t e m p e r a t u r e s h u t d o w n & c u r r e n t l i m i t i n g & s h o r t c i r c u i t c u r r e n t f o l d - b a c k & h i g h l y a c c u r a t e 1 . 5 % & l o w 3 t e m p e r a t u r e c o e f f i c i e n t & n o i s e r e d u c t i o n b y p a s s c a p a c i t o r & p o w e r - s a v i n g s h u t d o w n m o d e a p p l i c a t i o n s & b a t t e r y p o w e r e d w i d g e t s & i n s t r u m e n t a t i o n & w i r e l e s s d e v i c e s & p c p e r i p h e r a l s & p o r t a b l e e l e c t r o n i c s p a c k a g e d i m e n s i o n s m i l l i m e t e r m i l l i m e t e r r e f . m i n . m a x . r e f . m i n . m a x . a 5 . 8 0 6 . 2 0 m 0 . 1 0 0 . 2 5 b 4 . 8 0 5 . 0 0 h 0 . 3 5 0 . 4 9 c 3 . 8 0 4 . 0 0 l 1 . 3 5 1 . 7 5 d 0 c 8 c j 0 . 3 7 5 r e f . e 0 . 4 0 0 . 9 0 k 4 5 c f 0 . 1 9 0 . 2 5 g 1 . 2 7 t y p . t y p i c a l a p p l i c a t i o n c i r c u i t
                   
                                                                                        2 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b a b s o l u t e m a x i m u m r a t i n g s p a r a m e t e r s y m b o l r a t i n g s u n i t i n p u t m a x v o l t a g e v i n 8 v o u t p u t c u r r e n t i o u t p d / ( v i n - v o ) a o u t p u t v o l t a g e v o u t 1 . 5 ~ 5 . 0 v o p e r a t i n g a m b i e n t t e m p e r a t u r e t o p r - 4 0 ~ + 8 5 : j u n c t i o n t e m p e r a t u r e t j - 4 0 ~ + 1 2 5  m a x i m u m j u n c t i o n t e m p e r a t u r e t j m a x 1 5 0  t h e r m a l r e s i s t a n c e  j c 4 0 : / w i n t e r n a l p o w e r d i s s i p a t i o n ( ? t = 1 0 0 : ) p d 8 1 0 m w e d s c l a s s i f i c a t i o n b e l e c t r i c a l c h a r a c t e r i s t i c s v i n = v o u t ( t ) + 2 v , v e n = v i n , t a = 2 5 : u n l e s s o t h e r w i s e        p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t o u t p u t v o l t a g e v o u t ( e ) ( n o t e 1 ) v e n = v e h m i n , i o = 1 m a - 1 . 5 % v o u t ( t ) ( n o t e 2 ) 1 . 5 % v o u t p u t c u r r e n t i o v o u t > 1 . 2 v 1 . 5 - - a c u r r e n t l i m i t i l i m v o u t > 1 . 2 v 1 . 5 2 . 0 - a l o a d r e g u l a t i o n r e g l o a d i o = 1 m a t o 1 . 5 a - 1 0 . 2 1 % 1 . 5 v < v o u t ( t )  2 . 0 v - - 1 3 0 0 2 . 0 v < v o u t ( t )  2 . 8 v - - 8 0 0 d r o p o u t v o l t a g e v d r o p o u t i o = 1 . 5 a v o = v o u t ( e ) - 2 % 2 . 8 v < v o u t ( t ) - - 6 0 0 m v q u i e s c e n t c u r r e n t i q i o = 0 m a - 4 5 7 0  a g r o u n d p i n c u r r e n t i g n d i o = 1 m a ~ 1 . 5 a - 4 5 -  a v o u t ( t ) < 2 . 0 v - 0 . 1 5 - 0 . 1 5 2 . 0 v  v o u t ( t ) < 4 . 0 v - 0 . 1 0 . 0 2 0 . 1 l i n e r e g u l a t i o n r e g l i n e i o = 1 m a v i n = v o u t ( t ) + 1 t o v o u t ( t ) + 2 4 . 0 v  v o u t ( t ) - 0 . 4 - 0 . 4 % i n p u t v o l t a g e v i n n o t e 3 - 7 v o v e r t e m p e r a t u r e s h u t d o w n o t s - 1 5 0 - : o v e r t e m p e r a t u r e h y s t e r i s i s o t h - 3 0 - : o u t p u t v o l t a g e t e m p e r a t u r e c o e f f i c i e n t t c - 3 0 - p p m / : s h o r t c i r c u i t c u r r e n t i s c v o u t < 0 . 4 v - 7 5 0 - m a f = 1 k h z - 5 0 - p o w e r s u p p l y r e j e c t i o n p s r r i o = 1 0 0 m a c o = 4 . 7  f c e r a m i c f = 1 0 k h z - 2 0 - d b f = 1 k h z - 7 5 - p o w e r s u p p l y r e j e c t i o n p s r r i o = 1 0 0 m a c o = 4 . 7  f c e r a m i c c b y p = 0 . 0 1  f f = 1 0 k h z - 5 5 - d b o u t p u t v o l t a g e n o i s e e n f = 1 0 h z ~ 1 0 0 k h z i o = 1 0 m a , c b y p = 0  f c o = 4 . 7  f - 3 0 -  v r m s o u t p u t v o l t a g e n o i s e e n f = 1 0 h z ~ 1 0 0 k h z i o = 1 0 m a , c b y p = 0 . 0 1  f c o = 4 . 7  f - 3 0 -  v r m s v e h 2 . 0 - v i n v e n i n p u t t h r e s h o l d v e l 0 - 0 . 4 v i e h v i n = 7 v - - 0 . 1  a e n i n p u t b i a s c u r r e n t i e l v e n = 0 v , v i n = 7 v - - 0 . 5  a s h u t d o w n s u p p l y c u r r e n t i s d v i n = 5 v , v o u t = 0 v , v e n = 0 v - 0 . 5 2  a n o t e 1 : v o u t ( e ) = e f f e c t i v e o u t p u t v o l t a g e ( i . e . t h e o u t p u t v o l t a g e w h e n v o u t ( t ) + 2 . 0 v i s p r o v i d e d a t t h e v i n p i n w h i l e m a i n t a i n i n g a c e r t a i n i o u t v a l u e ) . 2 : v o u t ( t ) = s p e c i f i e d o u t p u t v o l t a g e 3 : v i n ( m i n ) = v o u t + v d r o p o u t
                   
                                                                                        3 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b o r d e r i n g i n f o r m a t i o n ( c o n t d . ) p a r t n u m b e r m a r k i n g o u t p u t v o l t a g e p a r t n u m b e r m a r k i n g o u t p u t v o l t a g e g s c 2 1 2 8 - 1 5 8 b 1 5 2 x x x x 1 . 5 v g s c 2 1 2 8 - 1 8 8 b 1 8 2 x x x x 1 . 8 v g s c 2 1 2 8 - 2 5 8 b 2 5 2 x x x x 2 . 5 v g s c 2 1 2 8 - 3 3 8 b 3 3 2 x x x x 3 . 3 v g s c 2 1 2 8 - 4 7 8 b 4 7 2 x x x x 4 . 7 5 v g s c 2 1 2 8 - 5 0 8 b 5 0 2 x x x x 5 . 0 v c h a r a c t e r i s t i c s c u r v e
                   
                                                                                        4 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b 1 1 5 : 8 5 : 5 5 : 2 5 : - 5 : - 4 5 :
                   
                                                                                        5 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b
                   
                                                                                        6 / 6 i s s u e d d a t e : 2 0 0 5 / 0 6 / 2 1 r e v i s e d d a t e : 2 0 0 5 / 1 0 / 0 4 b d e t a i l e d d e s c r i p t i o n t h e g s c 2 1 2 8 s e r i e s o f c o m s r e g u l a t o r s c o n t a i n a p m o s p a s s t r a n s i s t o r , v o l t a g e r e f e r e n c e , e r r o r a m p l i f i e r , o v e r - c u r r e n t p r o t e c t i o n , a n d t h e r m a l s h u t d o w n . t h e p - c h a n n e l p a s s t r a n s i s t o r r e c e i v e s d a t a f r o m t h e e r r o r a m p l i f i e r , o v e r - c u r r e n t s h u t d o w n , a n d t h e r m a l p r o t e c t i o n c i r c u i t s . d u r i n g n o r m a l o p e r a t i o n , t h e e r r o r a m p l i f i e r c o m p a r e s t h e o u t p u t v o l t a g e t o a p r e c i s i o n r e f e r e n c e . o v e r - c u r r e n t a n d t h e r m a l s h u t d o w n c i r c u i t s b e c o m e a c t i v e w h e n t h e j u n c t i o n t e m p e r a t u r e e x c e e d s 1 4 0 : , o r t h e c u r r e n t e x c e e d s 2 . 2 a . d u r i n g t h e r m a l s h u t d o w n , t h e o u t p u t v o l t a g e r e m a i n s l o w . n o r m a l o p e r a t i o n i s r e s t o r e d w h e n t h e j u n c t i o n t e m p e r a t u r e d r o p s b e l o w 1 2 0 : . t h e g s c 2 1 2 8 b e h a v e s l i k e a c u r r e n t s o u r c e w h e n t h e l o a d r e a c h e s 2 . 2 a . h o w e v e r , i f t h e l o a d i m p e d a n c e d r o p s b e l o w 0 . 3  , t h e c u r r e n t d r o p s b a c k t o 6 0 0 m a t o p r e v e n t e x c e s s i v e p o w e r d i s s i p a t i o n . n o r m a l o p e r a t i o n i s r e s t o r e d w h e n t h e l o a d r e s i s t a n c e e x c e e d s 0 . 7 5  . e x t e r n a l c a p a c i t o r s t h e g s c 2 1 2 8 i s s t a b l e w i t h a n o u t p u t c a p a c i t a n c e t o g r o u n d o f 4 . 7  f o r g r e a t e r . c e r a m i c c a p a c i t o r s h a v e t h e l o w e s t e s r , a n d w i l l o f f e r t h e b e s t a c p e r f o r m a n c e . c o n v e r s e l y , a l u m i n u m e l e c t r o l y t i c c a p a c i t o r s e x h i b i t t h e h i g h e s t e s r , r e s u l t i n g i n t h e p o o r e s t a c r e s p o n s e . u n f o r t u n a t e l y , l a r g e v a l u e c e r a m i c c a p a c i t o r s a r e c o m p a r a t i v e l y e x p e n s i v e . o n e o p t i o n i s t o p a r a l l e l a 0 . 1  f c e r a m i c c a p a c i t o r w i t h a 1 0  f a l u m i n u m e l e c t r o l y t i c . t h e b e n e f i t i s l o w e s r , h i g h c a p a c i t a n c e , a n d l o w o v e r a l l c o s t . a s e c o n d c a p a c i t o r i s r e c o m m e n d e d b e t w e e n t h e i n p u t a n d g r o u n d t o s t a b i l i z e v i n . t h e i n p u t c a p a c i t o r s h o u l d b e a t l e a s t 0 . 1  f t o h a v e a b e n e f i c i a l e f f e c t . a t h i r d c a p a c i t o r c a n b e c o n n e c t e d b e t w e e n t h e b y - p a s s p i n a n d g n d . t h i s c a p a c i t o r c a n b e a l o w c o s t p o l y e s t e r f i l m v a r i e t y b e t w e e n t h e v a l u e o f 0 . 0 0 1 ~ 0 . 0 1  f . a l a r g e c a p a c i t o r i m p r o v e s t h e a c r i p p l e r e j e c t i o n , b u t a l s o m a k e s t h e o u t p u t c o m e u p s l o w l y . t h i s s o f t t u r n - o n i s d e s i r a b l e i n s o m e a p p l i c a t i o n s t o l i m i t t u r n - o n s u r g e s . a l l c a p a c i t o r s s h o u l d b e p l a c e d i n c l o s e p r o x i m i t y t o t h e p i n s . a q u i e t g r o u n d t e r m i n a t i o n i s d e s i r a b l e . t h i s c a n b e a c h i e v e d w i t h a s t a r c o n n e c t i o n . e n a b l e w h e n p u l l e d l o w , t h e p m o s p a s s t r a n s i s t o r s h u t s o f f , a n d a l l i n t e r n a l c i r c u i t s a r e p o w e r e d d o w n . i n t h i s s t a t e , t h e q u i e s c e n t c u r r e n t i s l e s s t h a n 1  a . t h i s p i n b e h a v e s m u c h l i k e a n e l e c t r o n i c s w i t c h . 1 0 0 k  r e s i s t o r i s n e c e s s a r y b e t w e e n v e n s o u r c e a n d e n p i n w h e n v e n i s h i g h e r t h a n v i n . ( n o t e : t h e r e i s n o i n t e r n a l p u l l - u p f o r e n p i n ) i m p o r t a n t n o t i c e :  a l l r i g h t s a r e r e s e r v e d . r e p r o d u c t i o n i n w h o l e o r i n p a r t i s p r o h i b i t e d w i t h o u t t h e p r i o r w r i t t e n a p p r o v a l o f g t m .  g t m r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i t s p r o d u c t s w i t h o u t n o t i c e .  g t m s e m i c o n d u c t o r p r o d u c t s a r e n o t w a r r a n t e d t o b e s u i t a b l e f o r u s e i n l i f e - s u p p o r t a p p l i c a t i o n s , o r s y s t e m s .  g t m a s s u m e s n o l i a b i l i t y f o r a n y c o n s e q u e n c e o f c u s t o m e r p r o d u c t d e s i g n , i n f r i n g e m e n t o f p a t e n t s , o r a p p l i c a t i o n a s s i s t a n c e . h e a d o f f i c e a n d f a c t o r y :  t a i w a n : n o . 1 7 - 1 t a t u n g r d . f u k o u h s i n - c h u i n d u s t r i a l p a r k , h s i n - c h u , t a i w a n , r . o . c . t e l : 8 8 6 - 3 - 5 9 7 - 7 0 6 1 f a x : 8 8 6 - 3 - 5 9 7 - 9 2 2 0 , 5 9 7 - 0 7 8 5  c h i n a : ( 2 0 1 2 0 3 ) n o . 2 5 5 , j a n g - j i a n g t s a i - l u e n g r d . , p u - d u n g - h s i n d i s t r i c t , s h a n g - h a i c i t y , c h i n a t e l : 8 6 - 2 1 - 5 8 9 5 - 7 6 7 1 ~ 4 f a x : 8 6 - 2 1 - 3 8 9 5 0 1 6 5


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Price & Availability of GSC2128
Newark

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
85AH9885
Essentra Components Grommet, Nylon 6.6, 28Mm, Black; Grommet Type:Cable Retention; Cable Diameter Min:-; Cable Diameter Max:20.7Mm; Grommet Material:Nylon 6.6 (Polyamide 6.6); Mounting Hole Dia:28Mm; Panel Thickness Max:3Mm; Grommet Colour:Black Rohs Compliant: Yes |Essentra Components PGSC-2128A 25: USD35.02
10: USD35.02
5: USD35.02
1: USD35.02
BuyNow
1

DigiKey

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
RPC2044-ND
Essentra Components BUSHING SPLIT 0.815" NYLON BLACK 2600: USD0.18488
1000: USD0.20221
600: USD0.24265
400: USD0.2542
200: USD0.2831
50: USD0.2946
25: USD0.3208
10: USD0.364
1: USD0.43
BuyNow
3938

Mouser Electronics

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
144-PGSC-2128A
Essentra Components Grommets & Bushings Universal Bushing,Blk,1.09-1.10 in Hl 1: USD0.5
10: USD0.437
100: USD0.361
600: USD0.314
1000: USD0.259
2600: USD0.235
10000: USD0.212
25000: USD0.204
BuyNow
992

RS

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
71185050
Essentra Components Open All-Fit Bushing: .815 in Holding Diameter, 1.099 in Hole Dia, .118 in Max P | Essentra Components PGSC-2128A 200: USD0.428
400: USD0.398
600: USD0.386
RFQ
0

Bisco Industries

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
Essentra Components BuyNow
45

DB Roberts

Part # Manufacturer Description Price BuyNow  Qty.
PGSC-2128A
RICPGSC-2128A
Essentra Components Universal BushingBlk1.09-1.10 in Hl BuyNow
303

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