参数资料
型号: SP6120EY-L
厂商: Exar Corporation
文件页数: 4/22页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 16TSSOP
标准包装: 95
系列: AnyFET™
PWM 型: 电压模式
输出数: 1
频率 - 最大: 550kHz
占空比: 95%
电源电压: 3 V ~ 5.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
包装: 管件
PIN DESCRIPTION
P I N
N A M E
N / C
E N A B L E
I S P
I S N
V F B
C O M P
S S
R O S C
P R O G
V C C
G L
P G N D
G N D
S W N
G H
F U N C T I O N
N o C o n n e c t i o n
T T L c o m p a t i b l e i n p u t w i t h i n t e r n a l 4 u A p u l l u p . F l o a t i n g o r V e n a b l e > 1 . 5 V
w i l l e n a b l e t h e p a r t , V e n a b l e < 0 . 6 5 V d i s a b l e s p a r t .
C u r r e n t S e n s e P o s i t i v e I n p u t : R a i l t o R a i l I n p u t f o r O v e r - C u r r e n t D e t e c t i o n ,
4 3 m V t h r e s h o l d w i t h 1 0 μ s ( t y p ) r e s p o n s e t i m e .
C u r r e n t S e n s e N e g a t i v e I n p u t : R a i l t o R a i l i n p u t f o r O v e r - C u r r e n t
D e t e c t i o n .
F e e d b a c k V o l t a g e P i n : I n v e r t i n g i n p u t o f t h e e r r o r a m p l i f i e r a n d s e r v e s a s
t h e o u t p u t v o l t a g e f e e d b a c k p o i n t f o r t h e b u c k c o n v e r t e r . T h e o u t p u t
v o l t a g e i s s e n s e d a n d c a n b e a d j u s t e d t h r o u g h a n e x t e r n a l r e s i s t o r d i v i d e r .
E r r o r A m p l i f i e r C o m p e n s a t i o n P i n : A l e a d l a g n e t w o r k i s t y p i c a l l y
c o n n e c t e d t o t h i s p i n t o c o m p e n s a t e t h e f e e d b a c k l o o p . T h i s p i n i s
c l a m p e d b y t h e S S v o l t a g e a n d i s l i m i t e d t o 2 . 8 V m a x i m u m .
S o f t S t a r t P r o g r a m m i n g P i n : T h i s p i n s o u r c e s 5 0 μ A o n s t a r t - u p . A 0 . 0 1 μ F
t o 1 μ F c a p a c i t o r o n t h i s p i n i s t y p i c a l l y e n o u g h c a p a c i t a n c e t o s o f t s t a r t a
p o w e r s u p p l y . I n a d d i t i o n , h i c c u p m o d e t i m i n g i s c o n t r o l l e d b y t h i s p i n
t h r o u g h t h e 5 μ A d i s c h a r g e c u r r e n t . T h e S S v o l t a g e i s c l a m p e d t o 2 . 7 V
m a x i m u m .
F r e q u e n c y P r o g r a m m i n g P i n : A r e s i s t o r t o g r o u n d i s u s e d t o p r o g r a m
f r e q u e n c y . T y p i c a l v a l u e s - 1 8 , 7 0 0 O h m s , 3 0 0 k H z ; 1 0 , 2 0 0 O h m s , 5 0 0 k H z .
P r o g r a m m i n g P i n :
P R O G = G N D ; M O D E = N F E T / C O N T I N O U S
P R O G = 6 8 k ? t o G N D ; M O D E = N F E T / D I S C O N T I N O U S
P R O G = V C C ; M O D E = P F E T / C O N T I N O U S
P R O G = 6 8 k ? t o V C C ; M O D E = P F E T / D I S C O N T I N O U S
I . C . S u p p l y P i n : E S D s t r u c t u r e s a l s o h o o k e d t o t h i s p i n . P r o p e r l y b y p a s s
t h i s p i n t o P G N D w i t h a l o w E S L / E S R c e r a m i c c a p a c i t o r .
S y n c h r o n o u s F E T D r i v e r : 1 n F / 2 0 n s t y p i c a l d r i v e c a p a b i l i t y .
P o w e r G r o u n d P i n : U s e d f o r P o w e r S t a g e . C o n n e c t D i r e c t l y t o G N D a t
I . C . p i n s f o r o p t i m a l p e r f o r m a n c e .
G r o u n d P i n : M a i n g r o u n d p i n f o r I . C .
S w i t c h N o d e R e f e r e n c e : H i g h s i d e M O S F E T d r i v e r r e f e r e n c e . C a n a l s o b e
t i e d t o G N D f o r l o w v o l t a g e a p p l i c a t i o n s .
H I g h S i d e M O S F E T D r i v e r : C a n b e N F E T o r P F E T d e p e n d i n g o n P r o g r a m
M o d e . 1 n F / 2 0 n s t y p i c a l d r i v e c a p a b i l i t y . M a x i m u m v o l t a g e r a t i n g i s
r e f e r e n c e d t o S W N .
N U M B E R
S P 6 1 2 0
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
B S T
Date: 1/21/05
H i g h S i d e D r i v e r S u p p l y P i n .
SP6120 Low Voltage, AnyFET TM , Synchronous, Buck Controller
4
1 6
? Copyright 2005 Sipex Corporation
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