UC3842BVD1G - onsemi

Manufacturer Part Number

UC3842BVD1G

Manufacturer

onsemi

Introduction

The UC3842BVD1G is a high-performance, fixed-frequency current mode PWM controller used for DC-DC conversion in power management applications.

Product Features and Performance

Current mode operation for improved transient response

Low startup and operating current

Trimmed oscillator for precise frequency control

Automatic feed-forward compensation

Pulse-by-pulse current limiting

Enhanced load response characteristics

Under-voltage lockout with hysteresis

Double pulse suppression

Product Advantages

High level of integration for a compact design

Stable and reliable performance under varying conditions

Energy-efficient due to minimized switching losses

Suitable for designs requiring electrical isolation

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Up, Step-Up/Step-Down

Topology: Boost, Flyback

Voltage - Supply (Vcc/Vdd): 10V ~ 30V

Frequency - Switching: Up to 500kHz

Duty Cycle (Max): 96%

Operating Temperature: -40°C ~ 105°C (TA)

Quality and Safety Features

Overcurrent protection to prevent component damage

Thermal shutdown for over-temperature protection

Compatibility

Designed for surface mount technology, packaged in 8-SOIC

Application Areas

Switching power supplies

Power converters for computers and telecommunication equipment

Battery chargers

DC-DC modules

Product Lifecycle

Obsolete - please check for replacement or upgrade options

Key Reasons to Choose This Product

Efficiency in power conversion, reducing heat and improving system reliability

Flexibility in application, able to support both step-up and step-down topologies

Capable of driving a power MOSFET or BJT directly, simplifying external circuitry

Excellent thermal performance supporting a wide operating temperature range

Suitable for systems that require low power standby modes due to low quiescent current

High maximum duty cycle allowing for a wide range of output voltages

Constructed by onsemi, a reputable manufacturer in power management solutions

Product has historical reliability and has been time-tested in the field despite being obsolete