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See Technical Specifications

UC3843BN

MINIDIP, 500KHz, UC3843BN

Manufacturer:

Stmicroelectronics
Mfr.Part #:

UC3843BN
Datasheet:

UC3843BN Datasheet (PDF)
ECCN US:

EAR99
ECCN EU:

NEC
Packing Type:

Tube
Grade:

Industrial
EDA/CAD Models:

Request Free CAD Models for UC3843BN

Email: [email protected]

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Tel: +852 95804164

UC3843BN General Description

The UC3843BN is a high performance current mode PWM controller. It is specifically designed for use in switching power supplies and motor control applications. The device features an output that can source or sink up to 500mA of current, allowing it to drive a wide range of power devices. Additionally, the UC3843BN includes a voltage reference, error amplifier, oscillator, and output stage to provide comprehensive control over the switching operation.The controller operates with a supply voltage range of 9V to 20V and has a maximum operating frequency of 500kHz. It also includes features such as overcurrent protection, undervoltage lockout, and soft start to ensure safe and reliable operation. The UC3843BN is available in an 8-pin DIP package, making it easy to integrate into a variety of designs.

Key Features

Low start-up current

Trimmed bandgap reference

Oscillator discharge current

Fast cycle-by-cycle current limiting

Variable frequency operation

Pulse-by-pulse shut-down

Automatic feed-forward compensation

Line under-voltage lockout

Double pulse suppression

0. Soft start capability

Application

The UC3843BN is commonly used in various power supply applications such as off-line and DC-DC converters, LED lighting, motor control, and battery chargers

It is also suitable for use in telecom equipment, industrial equipment, and consumer electronics due to its high efficiency and reliability