UC3845BVDR2G - onsemi

Manufacturer Part Number

UC3845BVDR2G

Manufacturer

onsemi

Introduction

The UC3845BVDR2G is a high-performance, fixed-frequency current-mode PWM controller.

Product Features and Performance

Fixed-frequency current-mode PWM controller

High-performance operation up to 500kHz switching frequency

Duty Cycle adjustable up to 48% maximum

Operation voltage range from 7.6V to 30V

Capable of driving a transistor driver output

Supports Boost, Flyback topologies

Designed for single output with isolated or non-isolated configurations

Operating temperature range from -40°C to 105°C

Product Advantages

Precision reference voltage for accurate regulation

Current mode operation for improved transient response and cycle-by-cycle current limiting

High frequency reduces size of passive components

Flexible design suitable for a variety of topologies

Key Technical Parameters

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

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

Frequency Switching: Up to 500kHz

Duty Cycle (Max): 48%

Operating Temperature: -40°C ~ 105°C

Quality and Safety Features

Under-Voltage Lockout (UVLO) and thermal shutdown for safety

Cycle-by-cycle current limiting

Compatibility

Compatible with a wide range of supply voltages and external components

Suitable for use in a variety of power applications requiring voltage step-up or step-up/step-down regulation

Application Areas

Power supplies for industrial and consumer electronics

Switched Mode Power Supplies (SMPS)

Motor control

LED lighting drivers

Battery chargers

Product Lifecycle

Product Status: Active

Not nearing discontinuation with ongoing support and availability

Replacements or upgrades available within onsemi's product range

Several Key Reasons to Choose This Product

Proven reliability and performance from a reputable manufacturer, onsemi

Versatility across a wide range of applications and topologies

High switching frequency allows for compact and efficient power supply design

Enhanced safety features including under-voltage and thermal protection

Suitable for both isolated and non-isolated power systems