UC3845BVD1 - ONsemi

Manufacturer Part Number UC3845BVD1

Manufacturer: onsemi

Introduction

The UC3845BVD1 is a high-performance, fixed-frequency, current-mode PWM controller designed for off-line and DC-DC converter applications. It features a wide input voltage range, fast transient response, and robust protection features, making it suitable for a variety of power conversion applications.

Product Features and Performance

Wide input voltage range of 7.6V to 30V

High-speed current-mode control for fast transient response

Fixed-frequency operation up to 500kHz

Maximum duty cycle of 48%

Undervoltage lockout (UVLO) protection

Thermal shutdown protection

Soft-start function for controlled output voltage ramp-up

Product Advantages

Excellent reliability and stability due to robust protection features

High-efficiency power conversion with current-mode control

Flexible design options with wide input voltage range and high switching frequency

Compact surface-mount package for space-constrained applications

Key Reasons to Choose This Product

Proven performance and reliability of onsemi's power management solutions

Versatile design capabilities for a wide range of power conversion needs

Cost-effective solution for high-efficiency, high-frequency power conversion

Easy integration into various power supply and converter designs

Quality and Safety Features

Complies with safety standards for industrial and consumer applications

Rigorous quality control and testing during manufacturing

Robust protection features for reliable operation

Compatibility

The UC3845BVD1 is compatible with a variety of power conversion topologies, including boost, flyback, and SEPIC converters. It can be used in a wide range of applications, such as power supplies, battery chargers, and industrial equipment.

Application Areas

Switch-mode power supplies

DC-DC converters

Battery chargers

Industrial control systems

Telecommunications equipment

Consumer electronics

Product Lifecycle

The UC3845BVD1 is an obsolete product, meaning it is no longer in active production. However, there are several alternative and equivalent models available from onsemi that can be considered as replacements:

UC3845A Higher-performance version with additional features

UC3846: Variant with adjustable frequency and lower minimum on-time

UC3844: Lower-cost version with fewer features

NCP1562: Pin-compatible replacement with enhanced protection features