UC3845BVD1G - onsemi

Manufacturer Part Number

UC3845BVD1G

Manufacturer

onsemi

Introduction

UC3845BVD1G is a high-performance, fixed-frequency current-mode PWM controller.

Product Features and Performance

Current-mode operation for improved transient response

High output drive capability

Trimmed oscillator for precise frequency control

Automatic feed-forward compensation

Pulse-by-pulse current limiting

Product Advantages

Enhanced load response characteristics

Efficient power conversion with up to 500kHz switching frequency

Built-in error amplifier and under-voltage lockout features

Key Technical Parameters

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

Frequency - Switching: Up to 500kHz

Duty Cycle (Max): 48%

Output Type: Transistor Driver

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

Output Configuration: Positive, Isolation Capable

Topology: Boost, Flyback

Number of Outputs: 1

Output Phases: 1

Quality and Safety Features

Under-voltage lockout with hysteresis

Over-current protection

Thermal shutdown

Compatibility

Compatible with a range of inductors and capacitors for flexible circuit design

Application Areas

Switching power supplies

Power converters

Battery chargers

DC-DC modules

Product Lifecycle

Obsolete - consult manufacturer for alternative solutions or replacement parts

Several Key Reasons to Choose This Product

High-reliability due to current-mode control and internal safety features

Flexibility to be used in various topologies – boost, flyback

Wide operating temperature range suitable for industrial applications

High-frequency operation allows for use in compact power supply designs

Ease of use with minimal external components required for basic operation

Suitable for designs requiring isolated power supplies