CS51033YD8 datasheet(1/8 Pages) CHERRY

部品番号	CS51033YD8

部品情報	Fast PFET Buck Controller Does Not Require Compensation

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メーカー	CHERRY [Cherry Semiconductor Corporation]

ホームページ	http://www.cherrycorp.com/

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1

Features

CS

VFB

VCC

VGATE

Gnd

COSC

U1

CS51033

COSC

150pF

IRF 7404

3.3VIN

1.5VOUT

@3Amp

C1

0.1µF

VC

PGnd

Gnd

C3

100µF

C2

1µF

D3

1N4148

D2

1N4148

CS

0.1µF

C4

C0

D1

1N5821

4.7µH

CIN

100µF

D4

1N5818

Gnd

RA

1.5k

RB

300

NOTE: Capacitors C2, C3 and C4 are low ESR tantalum

caps used for noise reduction.

RG

10Ω

RC

10Ω

.1µF

100µF

0.1µF

100

0.01µF

s

1A Totem Pole Output

Driver

s

High Speed Oscillator

(700kHz max)

s

No Stability

Compensation Required

s

Lossless Short Circuit

Protection

s

2% Precision Reference

s

Programmable Soft Start

Package Options

Fast PFET Buck Controller

Does Not Require Compensation

CS51033

Description

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

VGATE

PGnd

COSC

Gnd

VC

CS

VCC

VFB

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

同様の部品番号 - CS51033YD8

メーカー	部品番号	データシート	部品情報
ON Semiconductor	CS51033YD8	86Kb / 12P	Fast PFET Buck Controller October, 2002 ??Rev. 8
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	CS51033YD8G	96Kb / 10P	Fast P?묬h FET Buck Controller October, 2005 ??Rev. 10

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