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參數(shù)資料
| 型號： | CS51033YN8 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | Fast PFET Buck Controller Does Not Require Compensation |
| 中文描述： | 快速PFET的降壓控制器不要求補償 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 159K |
| 代理商： | CS51033YN8 |
1
Features
CS
V
FB
V
CC
V
GATE
Gnd
C
OSC
U1
CS51033
C
OSC
150pF
IRF 7404
3.3V
IN
1.5V
@3Amp
C
1
0.1
μ
F
V
C
PGnd
Gnd
C
3
100
μ
F
C
2
1
μ
F
D
3
1N4148
D
2
1N4148
CS
0.1
μ
F
C
4
0.1
μ
F
C
0
D
1
1N5821
4.7
μ
H
C
IN
100
μ
F
D
4
1N5818
Gnd
R
A
1.5k
R
B
300
NOTE:
Capacitors C
, C
and C
4
are low ESR tantalum
caps used for noise reduction.
R
G
10
R
C
10
.1
μ
F
100
μ
F
100
μ
F
100
0.01
μ
F
I
1A Totem Pole Output
Driver
High Speed Oscillator
(700kHz max)
No Stability
Compensation Required
Lossless Short Circuit
Protection
2% Precision Reference
Programmable Soft Start
I
I
I
I
I
Package Options
C
Fast PFET Buck Controller
Does Not Require Compensation
Description
CS51033
The CS51033 is a switching con-
troller for use in DC-DC converters.
It can be used in the buck topology
with a minimum number of exter-
nal components. The CS51033 con-
sists of a 1.0A power driver for con-
trolling the gate of a discrete P-
channel transistor, fixed frequency
oscillator, short circuit protection
timer, programmable soft start, pre-
cision reference, fast output voltage
monitoring comparator, and output
stage driver logic with latch.
The high frequency oscillator
allows the use of small inductors
and output capacitors, minimizing
PC board area and systems cost.
The programmable soft start
reduces current surges at start up.
The short circuit protection timer
significantly reduces the PFET duty
cycle to approximately 1/30 of its
normal cycle during short circuit
conditions.
The CS51033 is available in 8L SO
and 8L PDIP plastic packages.
Typical Application Diagram
1
V
GATE
PGnd
C
OSC
Gnd
V
C
CS
V
CC
V
FB
8 Lead SO Narrow & PDIP
A
Company
Rev. 2/13/98
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
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