L4981XD

更新时间： 2024-09-15 22:23:51

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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技术参数
数据手册

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L4981XD 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.71	模拟集成电路 - 其他类型：	POWER FACTOR CONTROLLER
Base Number Matches：	1

L4981XD 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L4981XD相关器件

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L4987CPT120TR	STMICROELECTRONICS	获取价格	12V FIXED POSITIVE LDO REGULATOR, 0.7V DROPOUT, PSSO4, LEAD FREE, PPAK-5
L4987CPT30	STMICROELECTRONICS	获取价格	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT AND DROPOUT CONTROL FLAG