UC3845BD1G - onsemi

Manufacturer Part Number

UC3845BD1G

Manufacturer

onsemi

Introduction

The UC3845BD1G is a high-performance, fixed frequency current mode PWM controller contained in a compact 8-SOIC package, designed specifically for power management applications involving DC-DC switching controllers.

Product Features and Performance

High-performance PWM controller

Fixed frequency operation

Current mode operation for improved transient response

Capable of operating in Boost and Flyback topologies

Supports step-up, step-down, and step-up/step-down voltage conversion

Isolation capable output configuration

Supports a wide operating voltage range (7.6V to 30V)

Maximum switching frequency up to 500kHz

Maximum duty cycle of 48%

Offers frequency control feature

Product Advantages

Supports complex power supply designs due to its versatile output configuration

Enhanced system reliability through current mode control

Suitable for high-frequency operations, reducing the size of passive components

Wide voltage supply range accommodates various application needs

Compact surface mount package enables space-saving designs

Key Technical Parameters

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

Frequency Switching: Up to 500kHz

Duty Cycle (Max): 48%

Output Phases: 1

Output Type: Transistor Driver

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

Package / Case: 8-SOIC

Quality and Safety Features

Robust current mode operation for enhanced safety

Designed for a wide range of operating temperatures (0°C ~ 70°C)

Compatibility

Compatible with various input sources within the 7.6V to 30V range

Adaptable to multiple topologies including Boost and Flyback

Application Areas

Power Supply Units (PSUs)

LED Drivers

Battery Chargers

Telecommunication Equipment

Industrial Systems

Product Lifecycle

Status: Active

Not currently nearing discontinuation

Ongoing availability of replacements and upgrades

Several Key Reasons to Choose This Product

Versatile and efficient power management for a wide range of applications

High frequency operation enables compact and efficient designs

Wide supply voltage range offers flexibility in input power selection

Current mode control provides improved response to load changes

Reliable performance in a wide range of operating conditions