参数资料
型号: SP7655EB
厂商: Exar Corporation
文件页数: 3/16页
文件大小: 0K
描述: EVAL BOARD FOR SP7655
标准包装: 1
系列: *
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40 ° C < T AMB < 85 ° C, -40 ° C< Tj< 125 ° C, 4.5V < V CC < 5.5V, 3V< Vin< 28V, BST=LX + 5V,
LX = GND = 0.0V, UVIN = 3.0V, CV CC = 1 μ F, C COMP = 0.1 μ F, C SS = 50nF, Typical measured at V CC = 5V.
The denotes the specifications which apply over the full temperature range, unless otherwise specified.
P A R A M E T E R
M I N .
T Y P .
M A X .
U N I T S
C O N D I T I O N S
C O N T R O L L O O P : P W M C O M P A R A T O R , R A M P & L O O P D E L A Y P A T H
R a m p A m p l i t u d e
R A M P O f f s e t
R A M P O f f s e t T e m p . C o e f f i c i e n t
0 . 9 2
1 . 1
1 . 1
- 2
1 . 2 8
V
V
m V / o C
T A = 2 5 o C , R A M P C O M P
u n t i l G H s t a r t s S w i t c h i n g
G H M i n i m u m P u l s e W i d t h
9 0
1 8 0
n s
?
M a x i m u m C o n t r o l l a b l e D u t y R a t i o
M a x i m u m D u t y R a t i o
9 2
1 0 0
9 7
%
%
M a x i m u m D u t y R a t i o
M e a s u r e d j u s t b e f o r e
p u l s i n g b e g i n s
V a l i d f o r 2 0 c y c l e s
I n t e r n a l O s c i l l a t o r R a t i o
240
300
360
k H z
?
T I M E R S : S O F T S T A R T
S S C h a r g e C u r r e n t :
1 0
μ A
S S D i s c h a r g e C u r r e n t :
1
m A
? F a u l t P r e s e n t , S S = 0 . 2 V
P R O T E C T I O N : S h o r t C i r c u i t & T h e r m a l
S h o r t C i r c u i t T h r e s h o l d V o l t a g e
0 . 2
0 . 2 5
0 . 3
V
?
M e a s u r e d V R E F ( 0 . 8 V ) -
V F B
H i c c u p T i m e o u t
N u m b e r o f A l l o w a b l e C l o c k C y c l e s
a t 1 0 0 % D u t y C y c l e
M i n i m u m G L P u l s e A f t e r 2 0 C y c l e s
T h e r m a l S h u t d o w n T e m p e r a t u r e
T h e r m a l R e c o v e r y T e m p e r a t u r e
T h e r m a l H y s t e r e s i s
2 0 0
2 0
0 . 5
1 4 5
1 3 5
1 0
m s
C y c l e s
C y c l e s
o C
o C
o C
V F B = 0 . 5 V
V F B = 0 . 7 V
V F B = 0 . 7 V
O U T P U T : P O W E R S T A G E
H i g h S i d e R D S O N
S y n c h r o n o u s F E T R D S O N
M a x i m u m O u t p u t C u r r e n t
8
1 5
1 5
m ?
m ?
A
?
?
?
V C C = 5 V ; I O U T = 8 A
T A M B = 2 5 o C
V C C = 5 V ; I O U T = 8 A
T A M B = 2 5 o C
Rev E: 3/2 /07
SP7655 Wide Input Voltage Range 8A, 300kHz, Buck Regulator
3
? 2007 Sipex Corporation
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