Datasheet > L5972

L5972

更新时间： 2024-11-25 22:31:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器开关
页数	文件大小	规格书
10页	176K
描述
2A SWITCH STEP DOWN SWITCHING REGULATOR

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中文翻译

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数据手册

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L5972 数据手册

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

SO8 (4+2+2)

ORDERING NUMBERS: L5972D (SO8)

■ 250KHz INTERNALLY FIXED FREQUENCY

■ VOLTAGE FEEDFORWARD

L5972D013TR (Tape & Reel)

■ ZERO LOAD CURRENT OPERATION

■ INTERNAL CURRENT LIMITING

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.

■ PROTECTION AGAINST FEEDBACK

DISCONNECTION

■ THERMAL SHUTDOWN

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 250mΩ) as switching

element to minimize the size of the external compo-

nents.

APPLICATIONS:

■ CONSUMER: STB, DVD, TV, VCR,CAR

RADIO, LCD MONITORS

An internal oscillator fixes the switching frequency at

250KHz.

■ NETWORKING: XDSL, MODEMS,DC-DC

MODULES

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

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

puter related applications.

■ COMPUTER: PRINTERS, AUDIO/GRAPHIC

CARDS, OPTICAL STORAGE, HARD DISK

DRIVE

Pulse by pulse current limit with the internal frequen-

cy modulation offers an effective constant current

short circuit protection.

■ INDUSTRIAL: CHARGERS, CAR BATTERY

DC-DC CONVERTERS

TEST APPLICATION CIRCUIT

L1 33µH

VOUT=3.3V

VIN = 4.4V to 35V

VCC

OUT

5.6K

L5972D

STPS2L40U

COMP

100µF

10V

10µF

35V

22nF

GND

CERAMIC

3.3K

220pF

4.7K

D03IN1436

May 2003

1/10

12 3 4 5 6 7...10

中文翻译

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与L5972相关器件

型号	品牌	获取价格	描述	数据表
L5972D	STMICROELECTRONICS	获取价格	2A SWITCH STEP DOWN SWITCHING REGULATOR
L5972D_0710	STMICROELECTRONICS	获取价格	2A switch step down switching regulator
L5972D013TR	STMICROELECTRONICS	获取价格	2A SWITCH STEP DOWN SWITCHING REGULATOR
L5973	STMICROELECTRONICS	获取价格	2.5A SWITCH STEP DOWN SWITCHING REGULATOR
L5973A	ETC	获取价格	2A SWITCH STEP DOWN SWITCHING REGULATOR
L5973AD	STMICROELECTRONICS	获取价格	2A SWITCH STEP DOWN SWITCHING REGULATOR
L5973AD_07	STMICROELECTRONICS	获取价格	2A switch step down switching regulator
L5973AD_08	STMICROELECTRONICS	获取价格	2 A switch step down switching regulator
L5973ADTR	STMICROELECTRONICS	获取价格	2A SWITCH STEP DOWN SWITCHING REGULATOR
L5973D	STMICROELECTRONICS	获取价格	2.5A SWITCH STEP DOWN SWITCHING REGULATOR