Datasheet > CS51031

CS51031

更新时间： 2024-11-05 21:55:11

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
12页	90K
描述
Fast PFET Buck Controller

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CS51031 数据手册

CS51031

Fast PFET Buck Controller

The CS51031 is a switching controller for use in DC–DC

converters. It can be used in the buck topology with a minimum

number of external components. The CS51031 consists of a V

monitor for controlling the state of the device, 1.0 A power driver for

controlling the gate of a discrete P–channel transistor, fixed frequency

oscillator, short circuit protection timer, programmable soft start,

precision 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 duty cycle to

approximately 1/30 of its cycle during short circuit conditions.

The CS51031 is available in an 8 Lead SO plastic package.

Features

http://onsemi.com

MARKING

DIAGRAM

SO–8

D SUFFIX

CASE 751

51031

ALYW

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

• 1.0 A Totem Pole Output Driver

• High Speed Oscillator (700 kHz max)

• No Stability Compensation Required

• Lossless Short Circuit Protection

WW, W = Work Week

PIN CONNECTIONS

• V Monitor

• 2.0% Precision Reference

• Programmable Soft Start

GATE

PGND

• Wide Ambient Temperature Range:

– Industrial Grade: –40°C to 85°C

– Commercial Grade: 0°C to 70°C

OSC

GND

5.0 V–12 V

ORDERING INFORMATION*

47 µF

Device

Package

SO–8

Shipping

CS51031YD8

CS51031YDR8

CS51031GD8

CS51031GDR8

95 Units/Rail

2500 Tape & Reel

95 Units/Rail

IRF7416

SO–8

GATE

MBRS360

GATE

SO–8

2500 Tape & Reel

PGND

*Additional ordering information can be found on

page 9 of this data sheet.

100 Ω

0.1 µF

OSC

4.7 µH

OSC

0.1 µF

470 pF

GND

2.5 kΩ

3.3 V @ 3 A

0.1 µF

100 µF × 2

1.5 kΩ

Figure 1. Typical Application Diagram

Semiconductor Components Industries, LLC, 2002

Publication Order Number:

December, 2001 – Rev. 9

CS51031/D

12 3 4 5 6 7...12

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与CS51031相关器件

型号	品牌	获取价格	描述	数据表
CS51031/D	ETC	获取价格	Fast PFET Buck Controller
CS51031_05	ONSEMI	获取价格	Fast P−Ch FET Buck Controller
CS-51031D8	CHERRY	获取价格	Switching Controller, Voltage-mode, 1A, 700kHz Switching Freq-Max, BIPolar, PDSO8,
CS-51031DR8	CHERRY	获取价格	Switching Controller, Voltage-mode, 1A, 240kHz Switching Freq-Max, PDSO8, 0.150 INCH, SO-8
CS-51031DR8	ONSEMI	获取价格	1A SWITCHING CONTROLLER, 700kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, SO-8
CS51031ED8	ETC	获取价格	Voltage-Mode SMPS Controller
CS51031EDR8	ETC	获取价格	Voltage-Mode SMPS Controller
CS51031EN8	ETC	获取价格	Voltage-Mode SMPS Controller
CS51031GD8	ONSEMI	获取价格	Fast PFET Buck Controller
CS51031GD8G	ONSEMI	获取价格	Fast P−Ch FET Buck Controller