UC3843BN - onsemi

Manufacturer Part Number

UC3843BN

Manufacturer

onsemi

Introduction

The UC3843BN is an integrated circuit specifically designed for power management applications involving DC to DC switching controllers.

Product Features and Performance

Output Type: Transistor Driver

Functions: Step-Up, Step-Up/Step-Down

Output Configuration: Positive, Isolation Capable

Topology: Boost, Flyback

Single Output

Single Output Phase

Operating Frequency Up to 500kHz

Maximum Duty Cycle of 96%

Non-Synchronous Rectification

Absence of Clock Synchronization

Feature: Frequency Control

Operating Temperature Range from 0°C to 70°C

Product Advantages

Capable of driving a power BJT or MOSFET

Suitable for complex power supply designs requiring Step-Up or Step-Up/Step-Down functions

Isolation capability for secure designs

High frequency operation enabling compact design with smaller components

High duty cycle allows for efficient power conversion

Key Technical Parameters

Voltage Supply (Vcc/Vdd): 7.6V to 30V

Frequency Switching: Up to 500kHz

Duty Cycle (Max): 96%

Operating Temperature: 0°C to 70°C

Mounting Type: Through Hole

Package / Case: 8-DIP

Quality and Safety Features

Designed according to onsemi's quality and safety standards for Power Management ICs

Compatibility

Compatible with various switching power supply topologies

Designed to be used in through-hole PCB mounting setups

Application Areas

Switch mode power supplies (SMPS)

DC-DC converters

Battery chargers

Power modules for consumer electronics, computers, and telecommunications

Product Lifecycle

The product status is Obsolete

Potential availability of replacements or upgrades should be investigated with the manufacturer or distributors

Reasons to Choose This Product

Proven reliability from established manufacturer onsemi

Versatility in addressing multiple power conversion scenarios

High-frequency switching capability allows for size-efficient designs

The high maximum duty cycle assures good power conversion efficiency

Availability of technical documentation and support (despite the obsolete status)