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L4981BD Datasheet (PDF) - STMicroelectronics

L4981BD Datasheet PDF - STMicroelectronics
Part # L4981BD
Download  L4981BD Download

File Size   228.04 Kbytes
Page   17 Pages
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description POWER FACTOR CORRECTOR

L4981BD Datasheet (PDF)

Go To PDF Page Download Datasheet
L4981BD Datasheet PDF - STMicroelectronics

Part # L4981BD
Download  L4981BD Click to download

File Size   228.04 Kbytes
Page   17 Pages
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description POWER FACTOR CORRECTOR

L4981BD Datasheet (HTML) - STMicroelectronics

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L4981BD Product details

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 control 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 put filter; both the operating frequency modes
working with an average current mode PWM controller, maintaining sinusoidal line current without
slope compensation.

■ CONTROL BOOST PWM UP TO 0.99P.F.
■ LIMIT LINE CURRENT DISTORTION TO < 5%
■ UNIVERSAL INPUT MAINS
■ FEED FORWARD LINE AND LOAD REGULATION
■ AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY
■ HIGH CURRENT BIPOLAR AND DMOS TOTEM POLE OUTPUT
■ LOW START-UP CURRENT (0.3mA TYP.)
■ UNDER VOLTAGE LOCKOUT WITH HYSTERESIS AND PROGRAMMABLE TURN ON THRESHOLD
■ OVERVOLTAGE, OVERCURRENT PROTECTION
■ PRECISE 2% ON CHIP REFERENCE EXTERNALLY AVAILABLE
■ SOFT START



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About STMicroelectronics


STMicroelectronics is a multinational electronics and semiconductor manufacturer based in Geneva, Switzerland.

The company offers a wide range of products including microcontrollers, sensors, power amplifiers, and integrated circuits for various applications in the automotive, industrial, and consumer markets.

Founded in 1987, STMicroelectronics has operations in over 100 countries and is one of the largest semiconductor companies in the world.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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