L5972D013TR Datasheet

IC型號：
L5972D013TR
PDF描述：
2A SWITCH STEP DOWN SWITCHING REGULATOR
文件大小：
176.17KB
PDF頁數(shù)：
10頁
芯片廠家：
STMICROELECTRONICS

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L5972D

2A SWITCH STEP DOWN SWITCHING REGULATOR

2A INTERNAL SWITCH

OPERATING INPUT VOLTAGE FROM 4.4V

TO 36V

OUTPUT VOLTAGE ADJUSTABLE FROM

1.235V TO 35V

LOW DROPOUT OPERATION: 100% DUTY

CYCLE

250KHz INTERNALLY FIXED FREQUENCY

VOLTAGE FEEDFORWARD

ZERO LOAD CURRENT OPERATION

INTERNAL CURRENT LIMITING

PROTECTION AGAINST FEEDBACK

DISCONNECTION

THERMAL SHUTDOWN

SO8 (4+2+2)

ORDERING NUMBERS: L5972D (SO8)

L5972D013TR (Tape & Reel)

DESCRIPTION

The L5972D is a step down monolithic power switch-

ing regulator with a minimum switch current limit of

2A so it is able to deliver more than 1.5A DC current

to the load depending on the application conditions.

The output voltage can be set from 1.235V to 35V.

The device uses an internal P-Channel D-MOS tran-

sistor (with a typical Rdson of 250m鈩? as switching

element to minimize the size of the external compo-

nents.

An internal oscillator fixes the switching frequency at

250KHz.

Having a minimum input voltage of 4.4V only, it is

particularly suitable for 5V bus, available in all com-

puter related applications.

Pulse by pulse current limit with the internal frequen-

cy modulation offers an effective constant current

short circuit protection.

APPLICATIONS:

CONSUMER: STB, DVD, TV, VCR,CAR

RADIO, LCD MONITORS

NETWORKING: XDSL, MODEMS,DC-DC

MODULES

COMPUTER: PRINTERS, AUDIO/GRAPHIC

CARDS, OPTICAL STORAGE, HARD DISK

DRIVE

INDUSTRIAL: CHARGERS, CAR BATTERY

DC-DC CONVERTERS

TEST APPLICATION CIRCUIT

VIN = 4.4V to 35V

VCC

OUT

L1 33碌H

STPS2L40U

GND

4.7K

3.3K

VOUT=3.3V

10碌F

35V

CERAMIC

COMP

22nF

220pF

L5972D

5.6K

100碌F

10V

D03IN1436

May 2003

1/10

其它有關(guān)文件
L5972D View All Specifications
標準包裝
1
類別
集成電路 (IC)
家庭
PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器
系列
-
類型
降壓（降壓）
輸出類型
可調(diào)式
輸出數(shù)
1
輸出電壓
1.24 V ~ 35 V
輸入電壓
4.4 V ~ 36 V
PWM 型
-
頻率 - 開關(guān)
250kHz
電流 - 輸出
2A
同步整流器
無
工作溫度
-40°C ~ 150°C
安裝類型
表面貼裝
封裝/外殼
8-SOIC（0.154"，3.90mm 寬）
包裝
Digi-Reel®
供應(yīng)商設(shè)備封裝
8-SO
配用
497-4741-ND - BOARD EVAL FOR L5972D SW REG
其它名稱
497-3637-6

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L5972D013TR Datasheet

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