STMicroelectronics L4981AD

Name: L4981AD
Brand: STMicroelectronics
SKU: 3262070-L4981AD
Availability: InStock
Rating: 5 (1 reviews)

Part Number:: L4981AD

Manufacturer:: STMicroelectronics

Ventron No:: 3262070-L4981AD

Description:: IC PFC CTRLR AVERAGE CURR 20SOIC

ECAD Model:

Datasheet:: L4981AD

Overview

Description
The L4981 is a power factor corrector (PFC) pre-regulator that provides the necessary features to achieve a high power factor of up to 0.99. It is realized in BCD 6011 technology and contains all the control functions for designing a high-efficiency power supply with sinusoidal line current consumption. The L4981 can be easily used in systems with mains voltages between 85V to 265V without any line switch. It offers the possibility to work at fixed frequency (L4981A) or modulated frequency (L4981B), optimizing the size of the input filter.

Features
Control boost PWM up to 0.99 P.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.)
Undervoltage lockout with hysteresis and programmable turn-on threshold
Overvoltage, overcurrent protection
Precise 2% on-chip reference externally available
Soft start

Applications
High-efficiency power supplies
Power factor correction
Industrial applications
Consumer electronics

Specifications

STMicroelectronics L4981AD technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics L4981AD.