UC3845BD - onsemi

Manufacturer Part Number

UC3845BD

Manufacturer

onsemi

Introduction

The UC3845BD is a high-performance, current mode, pulse-width modulation (PWM) controller designed for off-line and DC-DC power supplies requiring tight output regulation. It features a wide supply voltage range, an accurate internal reference, and a high-speed current-limit comparator for reliable over-current protection.

Product Features and Performance

Wide supply voltage range: 7.6V to 30V

Up to 500kHz switching frequency

Maximum duty cycle of 48%

Accurate internal reference voltage

High-speed current-limit comparator for over-current protection

Fault protection features including overcurrent, undervoltage, and thermal shutdown

Tight output regulation

Product Advantages

Reliable over-current protection

Wide operating voltage range

High-speed switching capabilities

Precise output regulation

Comprehensive fault protection features

Key Reasons to Choose This Product

Robust and reliable performance for critical power supply applications

Versatile design accommodates a wide range of input and output requirements

Advanced protection features ensure safe and stable operation

Proven onsemi quality and reliability

Quality and Safety Features

Rigorous quality control and testing

Compliance with relevant safety standards

Thermal shutdown protection

Compatibility

The UC3845BD is compatible with a variety of off-line and DC-DC power supply designs, including boost, flyback, and other topologies.

Application Areas

Switch-mode power supplies

Battery chargers

Industrial control systems

Telecommunications equipment

Automotive electronics

Product Lifecycle

The UC3845BD is an obsolete product, meaning it is no longer in active production. However, there are several alternative models available that may be suitable replacements. Customers are advised to contact our website's sales team for more information on compatible products and availability.