UC3842AN - onsemi

Manufacturer Part Number

UC3842AN

Manufacturer

onsemi

Introduction

The UC3842AN is a high-performance fixed-frequency current-mode controller for offline and DC-to-DC converter applications.

Product Features and Performance

Offers simple external circuits

Handles up to 500kHz switching frequencies

Maximum duty cycle of 96%

Supports boost and flyback topologies

Supports high-power-density designs

Can drive a transistor directly

Product Advantages

Cost-effective power management solution

Stable and reliable performance

Suitable for simple and complex power supply designs

Key Technical Parameters

10V to 30V supply voltage range

Up to 500kHz switching frequency

96% maximum duty cycle

Single output controller

Operational temperature range from 0°C to 70°C

Quality and Safety Features

Built-in under-voltage lockout

Over-current protection

Thermal protection with hysteresis

Designed for controlled baselines

Provides consistent part-to-part performance

Compatibility

Compatible with a broad range of power semiconductor switches

Supports isolated and non-isolated topologies

Application Areas

Switched mode power supplies (SMPS)

DC to DC converters

Power factor correction modules

Charge controllers for battery systems

Product Lifecycle

Obsolete product status

May have limited or no factory support

Replacements or upgrades need to be evaluated

Several Key Reasons to Choose This Product

High integration reduces external component count

Can improve the reliability of end products

Economical for high-volume production

Robust performance in a range of power supply applications

Proven design used in a wide array of commercial and industrial products