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參數資料
| 型號： | ST755CN |
| 廠商： | 意法半導體 |
| 英文描述： | ADJUSTABLE INVERTING NEGATIVE OUTPUT CURRENT MODE PWM REGULATORS |
| 中文描述： | 可調式逆變負輸出電流模式PWM調節器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 80K |
| 代理商： | ST755CN |
ST755
ADJUSTABLE INVERTING NEGATIVE OUTPUT
CURRENT MODE PWM REGULATORS
September 1998
I
2.7VTO 11VINPUT TOADJUSTABLE
NEGATIVEOUTPUT CONVERSION
I
1W GUARANTEED OUTPUT POWER
(V
in
>4.5V,T
≤
70
o
C)
I
68% TYP.EFFICENCY AT6V
I
VERYLOW QUIESCENT CURRENT: 1.2mA
IN ON MODE 10
μ
A IN SHUT DOWN MODE
I
SOFT START
I
VERYLOW NOISE OUTPUT
I
160KHz FIXEDFREQUENCY OSCILLATOR
I
MIXEDBIPOLAR-CMOSTECHNOLOGY
DESCRIPTION
The
ST755
switch-mode
Power MOSFET that generaters an adjustable
negative output from a voltage input of 2.7V to
11V, output
current guaranteed at 200mA (for
is
an
adjustable
rergulator with
inverting
internal
DC-DC
BLOCK DIAGRAM
DIP-8
SO-8
V
in
>4.5V, V
out
= -5V and 0
o
C
≤
Ta
≤
70
o
C) and
275mA (typical value at T
a
= 25
o
C, V
out
= -5V).
A logic controlled shut down pin that interfaces
directly with microprocessor reduces supply
current to only 10
μ
A. Input to Output differential
voltage is limited to V
in
+|V
out
|<12.7V. No load
supply currentis 1.2mA.
1/9
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