L5994 datasheet(1/26 Pages) STMICROELECTRONICS

部件名	L5994

功能描述	ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER

PDF	26 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 26 page

1/26

L5994

L5994A

April 2002

FEATURE

s

DUAL PWM CONTROLLERS ADJUSTABLE

1.9V to 5.3V(Section1)

1.6V to 3.5V(Section2)

s

AUXILIARY DRIVER FOR LINEAR

REGULATOR

s

CURRENT MODE CONTROL USING A LOW

SENSE RESISTOR

s

DUAL SYNC RECTIFIERS DRIVERS

s

"ONE SHOT" FEATURE (L5994A only)

s

96% EFFICIENCY ACHIEVABLE

s

50

µA@12V STAND BY CONSUMPTION

s

4.75V TO 25V OPERATING SUPPLY VOLTAGE

s

EXCELLENT LOAD TRANSIENT RESPONSE

s

"PULSE SKIPPING" FUNCTION

s

OUTPUT UNDER VOLTAGE SHUTDOWN

s

ADAPTATIVE ANTI SHOOT-THROUGH

CONTROL

s

OVER/UNDER VOLTAGE DETECTION

s

POWER GOOD SIGNALS

s

SEPARATED DISABLE

s

THERMAL SHUTDOWN

APPLICATIONS

s

NOTEBOOK AND SUB NOTEBOOK

COMPUTERS

s

1.8V AND 2.5V I/O SUPPLY

s

WORDPAD

s

INTERNET APPLIANCE

DESCRIPTION

The device provides a dual PWM controller and a

linear driver controller that can support the complete

power management in mobile equipment with high

efficiency.

TQFP32

ORDERING NUMBERS: L5994

L5994A

ADJUSTABLE TRIPLE OUTPUT

POWER SUPPLY CONTROLLER

Figure 1. System Block Diagram

SYNC

POWER

MANAGEMENT

& SYSTEM

SUPERVISOR

5V

to

25V

2.5V

1.8V

POWER

SECTION

L5994

µP

MEMORY

PERIPHERALS

12V LDO

5.1V LDO

3.39V REF

D98IN862

POWER GOOD

类似零件编号 - L5994

制造商	部件名	数据表	功能描述
STMicroelectronics	L5994	70Kb / 8P	ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER Sep-1999

More results

类似说明 - L5994

制造商	部件名	数据表	功能描述
STMicroelectronics	L4992	296Kb / 26P	TRIPLE OUTPUT POWER SUPPLY CONTROLLER Jun-2000
STMicroelectronics	L5994	70Kb / 8P	ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER Sep-1999
Maxim Integrated Produc...	MAX782	497Kb / 32P	Triple-Output Power-Supply Controller for Notebook Computers Rev 2; 5/94
Maxim Integrated Produc...	MAX783	279Kb / 28P	Triple-Output Power-Supply Controller for Notebook Computers 19-0045; Rev 1; 5/94
Motorola, Inc	MC34710	518Kb / 16P	Adjustable Dual Output Switching Power Supply
Analog Intergrations Co...	AIC1533	397Kb / 17P	Triple-Output LCD Power Supply
Astrodyne Corporation	RT-50	484Kb / 2P	50W Triple Output Switching Power Supply
Astrodyne Corporation	RT-65	517Kb / 2P	65W Triple Output Switching Power Supply
Mean Well Enterprises C...	NET-35	403Kb / 2P	35W Triple Output Switching Power Supply
Intersil Corporation	ISL62391	654Kb / 20P	High-Efficiency, Triple-Output System Power Supply Controller April 7, 2011