L4981

更新时间： 2024-09-15 22:51:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		功率因数校正
页数	文件大小	规格书
17页	231K
描述
POWER FACTOR CORRECTOR

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中文翻译

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数据手册

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L4981 数据手册

L4981A

L4981B

POWER FACTOR CORRECTOR

CONTROL BOOST PWM UP TO 0.99P.F.

LIMITLINE CURRENT DISTORTION TO < 5%

UNIVERSAL INPUT MAINS

MULTIPOWER BCD TECHNOLOGY

FEED FORWARD LINE AND LOAD REGULA-

TION

AVERAGE CURRENT MODE PWM FOR

MINIMUM NOISE SENSITIVITY

HIGH CURRENT BIPOLAR AND DMOS TO-

TEM POLE OUTPUT

LOW START-UP CURRENT (0.3mA TYP.)

UNDER VOLTAGE LOCKOUT WITH HYS-

TERESIS AND PROGRAMMABLE TURN ON

THRESHOLD

OVERVOLTAGE, OVERCURRENT PROTEC-

TION

DIP20

SO20

ORDERING NUMBERS: L4981X (DIP20)

L4981XD (SO20)

PRECISE 2% ON CHIP REFERENCE EX-

TERNALLY AVAILABLE

SOFT START

trol functions for designing a high efficiency-mode

power supply with sinusoidal line current con-

sumption.

The L4981 can be easily used in systems with

mains voltages between 85V to 265V without any

line switch. This new PFC offers the possibility to

work at fixed frequency (L4981A) or modulated

frequency (L4981B) optimizing the size of the in-

DESCRIPTION

The L4981 I.C. provides the necessary features

to achieve a very high power factor up to 0.99.

Realized in BCD 60II technology this power factor

corrector (PFC) pre-regulator contains all the con-

BLOCK DIAGRAM

1/17

September 1998

12 3 4 5 6 7...17

中文翻译

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与L4981相关器件

型号	品牌	获取价格	描述	数据表
L4981A	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981A_01	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981AD	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981AD013TR	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981B	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981BD	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981BD013TR	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981X	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4981XD	STMICROELECTRONICS	获取价格	POWER FACTOR CORRECTOR
L4984D	STMICROELECTRONICS	获取价格	Inductor saturation protection