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L4981BD

The Power Factor Correction PWM Controller L4981BD features a 20-pin SO tube package

Manufacturer:

Stmicroelectronics
Mfr.Part #:

L4981BD
Datasheet:

L4981BD Datasheet (PDF)
ECCN US:

EAR99
ECCN EU:

NEC
Packing Type:

Tube
Grade:

Industrial

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

L4981BD General Description

The L4981BD is a high-voltage synchronous step-down switching regulator controller. It is designed for use in wide input voltage range applications up to 150V. The device operates with a fixed switching frequency of 150 kHz and provides an adjustable output voltage range from 3.3V to 125V, making it suitable for a variety of power supply designs.The L4981BD features a current-mode control architecture for improved stability and transient response. It also includes a soft-start function to prevent inrush currents during startup, as well as overvoltage and overcurrent protection for added reliability.Other key features of the L4981BD include programmable overcurrent protection, an adjustable peak current limit, and a synchronization pin for external clocking. The device comes in a compact and thermally enhanced SO-16 package, making it suitable for space-constrained applications.

Key Features

Wide input voltage range of 3.8V to 24V

Adjustable output voltage

Fixed frequency 250 kHz PWM operation

Overvoltage, overcurrent, and thermal protection

Soft-start function

Efficiency up to 90%

Low quiescent current

Application

The L4981BD is primarily used in applications requiring high-efficiency, low-power-consumption, and precise regulation of the output voltage

Typical applications include offline flyback converters, LED drivers, power supplies for appliances, and auxiliary power supplies

Specifications

ECCN US	EAR99	ECCN EU	NEC
Packing Type	Tube	Grade	Industrial

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AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

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Ratings and Reviews

E**e 02/03/2024

Goods is good quality and delivery is so fast.Thank you dear seller.

D**n 09/25/2023

All goods received, but haven't had a chance to check it yet.

B**n 05/13/2023

Got in the suburbs on the 43rd day. Thank you.

C**b 11/08/2022

Order received in 38 days. Capacitors exactly as described, all fully working, capacitance goes from 320.3 to 329.2uF and ESR from 0.11 to 0.14 ohms. Thank you.