L5994

更新时间： 2024-02-08 06:14:26

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		输出元件控制器
页数	文件大小	规格书
8页	73K
描述
ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER

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中文翻译

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数据手册

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L5994 数据手册

L5994

ADJUSTABLE TRIPLE OUTPUT

POWER SUPPLY CONTROLLER

PRODUCT PREVIEW

DUAL PWM BUCK CONTROLLERS

ADJUSTABLE

1.9V to 5V (Section 1)

1.66V to 3.5V (Section 2)

12V/120mALINEAR REGULATOR

DUAL SYNCH RECTIFIERS DRIVERS

96% EFFICIENCY ACHIEVABLE

TQFP32

50 A (@ 12V) STAND BY CONSUMPTION

ORDERING NUMBER: L5994

5.0V TO 25V SUPPLY VOLTAGE

EXCELLENTLOAD TRANSIENT RESPONSE

DISABLE PULSE SKIPPING FUNCTION

OUTPUT UNDERVOLTAGE SHUTDOWN

POWER MANAGEMENT:

- UNDER AND OVERVOLTAGEOUTPUT

DETECTION

- POWER GOOD SIGNAL

- SEPARATED DISABLE

THERMAL SHUTDOWN

Notebook computer and/or battery powered

equipment. The device produces regulated 1.8V,

2.5V (both adjustable)and 12V supplies for use in

portable and PCMCIA applications.

The internal architecture allows to operate with

minimum external components count. A very high

switching frequency (200/300 KHz or externally

synchronizable) optimizes their physical dimen-

sions.

PACKAGE: TQFP32

Synchronous rectification and pulse skipping

mode for the buck sections optimise the overall

efficiency over a wide load current range.

The two high performance PWM controllers for

1.8V and 2.5V lines are monitored for overvol-

tage, undervoltage and overcurrent conditions.

On detection of a fault, a POWER GOOD signal

is generated and a specific shutdown procedure

takes place to prevent physical damage and data

corruption.

APPLICATION

NOTEBOOK AND SUBNOTEBOOK COM-

PUTERS

PEN TOP AND PORTABLE EQUIPMENT

COMMUNICATING COMPUTERS

DESCRIPTION

The L5994 is a sophisticated dual PWM step-

down controller and power monitor intended for

A disable function allows to manage the output

power sections separately, optimising the quies-

cent consumptionof the IC in stand-by conditions.

SYSTEM BLOCK DIAGRAM

2.5V

POWER

SECTION

25V

1.8V

L5994

µP

SYNC

12V LDO

MEMORY

PERIPHERALS

5.1V LDO

POWER

MANAGEMENT

3.39V REF

& SYSTEM

SUPERVISOR

POWER GOOD

D98IN862

1/8

September 1999

This is preliminary information on a new product now in development. Details are subject to change without notice.

12 3 4 5 6 7 8

中文翻译

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与L5994相关器件

型号	品牌	获取价格	描述	数据表
L5994_02	STMICROELECTRONICS	获取价格	ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER
L5994A	STMICROELECTRONICS	获取价格	ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER
L5995	STMICROELECTRONICS	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32, 7 X 7 MM, TQFP-32
L5996	STMICROELECTRONICS	获取价格	5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU
L-59BL/1EYW	KINGBRIGHT	获取价格	Dual Color LED, High Efficiency Red/yellow, Diffused White, T-1 3/4, 5mm, ROHS COMPLIANT P
L-59BL/1GYW	KINGBRIGHT	获取价格	Dual Color LED, Yellow/green, Diffused White, T-1 3/4, 5mm, ROHS COMPLIANT PACKAGE-3
L59BL/EGW	KINGBRIGHT	获取价格	Dual Color LED, High Efficiency Red Orange/green, Diffused White, T-1 3/4, 5mm,
L59BL/EYW	KINGBRIGHT	获取价格	Dual Color LED, High Efficiency Red Orange/yellow, Diffused White, T-1 3/4, 5mm,
L59BL/GYW	KINGBRIGHT	获取价格	Dual Color LED, Yellow/green, Diffused White, T-1 3/4, 5mm,
L-59CB/1EYW	KINGBRIGHT	获取价格	Dual Color LED, High Efficiency Red/yellow, Diffused White, T-1 3/4, 5mm, ROHS COMPLIANT P

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