UC3843AN - onsemi

Manufacturer Part Number

UC3843AN

Manufacturer

onsemi

Introduction

UC3843AN is a versatile PWM controller used in DC DC switching circuits for power management.

Product Features and Performance

Supports step-up, step-up/step-down configurations

Allows for positive output with the capability for isolation

Utilizes boost and flyback topology

Can operate up to a frequency of 500kHz

Offers a maximum duty cycle of 96%

Functions without a synchronous rectifier and clock synchronization

Includes frequency control features

Product Advantages

High flexibility in power supply design due to variable topologies supported

Isolation capability increases usability in sensitive applications

High frequency operation reduces size of passive components

High duty cycle maximizes power efficiency

Through-hole mounting simplifies installation on PCBs

Key Technical Parameters

Output Type: Transistor Driver

Voltage Supply (Vcc/Vdd): 8.4V 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 (0.300", 7.62mm)

Quality and Safety Features

Robust operating temperature range maintains performance in varied environments

Compatibility

Compatible with various circuit designs due to its adaptive functionality

Application Areas

Ideal for power supply applications across consumer electronics, telecommunications, and industrial equipment

Product Lifecycle

Product Status: Obsolete

The UC3843AN is in the phase-out stage; users should consider securing replacements or look for newer upgrades in similar products

Several Key Reasons to Choose This Product

High efficiency and flexible use in different types of power applications

The ability to work under a wide range of input voltages

Straightforward integration with common PCB technologies due to through hole package format

Offers design capabilities in applications requiring electrical isolation

Comes from a reputable manufacturer known for reliability and performance in power management solutions