UC3845BD1 - onsemi

Manufacturer Part Number

UC3845BD1

Manufacturer

onsemi

Introduction

UC3845BD1, a PWM controller for DC DC switching, offers flexible features for designing boost or flyback converters.

Product Features and Performance

PWM control for precise regulation

Capable of step-up and step-up/step-down configurations

Supports positive output with isolation capability

Boost and flyback topologies for versatile design options

Single output with a single-phase operation

Operating frequency up to 500kHz, for compact power supply design

Up to 48% maximum duty cycle

Frequency control for tailored system performance

Product Advantages

High flexibility for various circuit designs

Suitable for isolated power supply applications

Allows for high-frequency operation to reduce transformer size

Provides consistent performance over a wide supply range

Key Technical Parameters

Output Type: Transistor Driver

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

Frequency Switching: Up to 500kHz

Duty Cycle (Max): 48%

Operating Temperature: 0°C ~ 70°C (TA)

Mounting Type: Surface Mount

Package / Case: 8-SOIC (0.154", 3.90mm Width)

Quality and Safety Features

Standard operating temperature range for reliability

SOIC package for secure surface mount

Compatibility

Compatible with a variety of external components for design flexibility in power supply circuits

Application Areas

Power supplies for electronics

Isolated converters for industrial applications

Power management solutions within communication devices

Product Lifecycle

Status: Obsolete

Potential for limited availability and support

Replacement or upgrades should be considered for future designs

Several Key Reasons to Choose This Product

onsemi's reputation for quality and performance in power management

The UC3845BD1's adaptability for both step-up and step-down applications

Ability to create isolated output configurations

High-frequency switching capability for reduced-size components

Consistent operation across a wide voltage supply range

Suitable for a broad range of applications from consumer electronics to industrial systems