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CS51031YD8 Folha de dados(PDF) 1 Page - Cherry Semiconductor Corporation

Nome de Peças CS51031YD8
Descrição Electrónicos  Fast PFET Buck Controller Does Not Require Compensation
Download  8 Pages
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Fabricante Electrônico  CHERRY [Cherry Semiconductor Corporation]
Página de início  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS51031YD8 Folha de dados(HTML) 1 Page - Cherry Semiconductor Corporation

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1
Features
VC
VFB
CS
VCC
VGATE
Gnd
PGnd
COSC
CS51031
COSC
150pF
CS
0.1
mF
RA
1.5k
W
RB
2.5k
W
CO
100
mF ´ 2
D1
MP1
5V - 12V
L
4.7
mH
CRR
0.1
mF
CIN
47
mF
VO
3.3V @ 3A
MBRS360
IRF7416
VGATE
20
W
RVCC
10
W
CVCC
100
mF
.01
mF
100
s
1A Totem Pole Output
Driver
s
High Speed Oscillator
(700kHz max)
s
No Stability
Compensation Required
s
Lossless Short Circuit
Protection
s
VCC Monitor
s
2% Precision Reference
s
Programmable Soft Start
Package Options
Fast PFET Buck Controller
Does Not Require Compensation
CS51031
Description
The CS51031 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 CS51031 con-
sists of a VCC monitor for control-
ling the state of the device, 1.0A
power driver for controlling the
gate of a discrete P-channel transis-
tor, fixed frequency oscillator, short
circuit protection timer, pro-
grammable soft start, precision ref-
erence, fast output voltage monitor-
ing 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 duty cycle
to approximately 1/30 of its cycle
during short circuit conditions.
The CS51031 is available in 8L SO
and 8L PDIP plastic packages.
Typical Application Diagram
1
VGATE
PGnd
COSC
Gnd
VC
CS
VCC
VFB
8 Lead SO Narrow & PDIP
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
A
Company
¨
Rev. 2/13/98


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