參數(shù)資料
型號(hào)： L4981BD
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： IC-POWER FACTOR CORRECTOR
中文描述： 集成電路功率因數(shù)校正
文件頁(yè)數(shù)： 1/17頁(yè)
文件大?。?/td> 228K
代理商： L4981BD
L4981A
L4981B
POWER FACTOR CORRECTOR
CONTROL BOOST PWMUP TO 0.99P.F.
LIMITLINE CURRENT DISTORTIONTO < 5%
UNIVERSALINPUT MAINS
FEED FORWARD LINE AND LOAD REGULA-
TION
AVERAGE CURRENT
MINIMUM NOISE SENSITIVITY
HIGH CURRENT BIPOLAR AND DMOS TO-
TEM POLEOUTPUT
LOW START-UPCURRENT (0.3mATYP.)
UNDER VOLTAGE LOCKOUT WITH HYS-
TERESIS AND PROGRAMMABLE TURN ON
THRESHOLD
OVERVOLTAGE, OVERCURRENT PROTEC-
TION
PRECISE 2% ON CHIP REFERENCE EX-
TERNALLYAVAILABLE
SOFTSTART
MODE
PWM FOR
DESCRIPTION
The L4981 I.C. provides the necessary features
to achievea veryhigh powerfactor up to 0.99.
Realized in BCD 60II technologythis power factor
corrector (PFC) pre-regulatorcontains all the con-
trol functionsfor designinga highefficiency-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-
September 1998
BLOCK DIAGRAM
ORDERING NUMBERS:
L4981X (DIP20)
L4981XD (SO20)
DIP20
SO20
MULTIPOWER BCD TECHNOLOGY
1/17
相關(guān)PDF資料
PDF描述
L4981 POWER FACTOR CORRECTOR
L4981A POWER FACTOR CORRECTOR
L4981B POWER FACTOR CORRECTOR
L4981X POWER FACTOR CORRECTOR
L4981XD POWER FACTOR CORRECTOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L4981BD 制造商:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR SMD 4981
L4981BD013TR 功能描述:功率因數(shù)校正 IC Very High Power RoHS:否 制造商:Fairchild Semiconductor 開(kāi)關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L4981DIE1 制造商:STMicroelectronics 功能描述:
L4981X 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR
L4981XD 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR
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