UC3843BVD1R2G - onsemi

Manufacturer Part Number

UC3843BVD1R2G

Manufacturer

onsemi

Introduction

The UC3843BVD1R2G is a high-performance fixed frequency current-mode PWM controller.

Product Features and Performance

High Current Totem Pole Output

Automatic Feed Forward Compensation

Pulse-by-Pulse Current Limiting

Enhanced Load Response Characteristics

Under-Voltage Lockout with Hysteresis

Double Pulse Suppression

High-Frequency Oscillation Capability up to 500kHz

Low Startup and Operating Current

Product Advantages

Stable and reliable PWM control for a variety of applications

Energy-efficient power supply operations

Increased durability with built-in safety features

Optimal performance in harsh temperature conditions

Compatible with a broad range of supply voltages

Key Technical Parameters

Output Type: Transistor Driver

Functions: 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): 96%

Synchronous Rectifier: No

Control Features: Frequency Control

Operating Temperature: -40°C ~ 105°C

Quality and Safety Features

Built-in under-voltage lockout with hysteresis

Current limiting for enhanced safety

Compatibility

Compatible with a variety of inductors and capacitors for personalized circuit design

Suitable for use with a broad range of external MOSFETs

Application Areas

Switch Mode Power Supplies (SMPS)

DC-to-DC Converters

Power Supply Modules

Battery Chargers

Consumer Electronics

Industrial Control Systems

Product Lifecycle

Active status, indicating ongoing manufacture and support

Not listed as nearing discontinuation

Potential availability of newer models with added features for upgrades

Several Key Reasons to Choose This Product

Proven reliability with under-voltage protection and current limiting features

Flexible operation across a wide voltage range

High efficiency at high frequencies reducing operational costs

Versatile PWM controller suitable for numerous types of power conversion applications

Robust performance in extreme temperature environments

Extensive quality control and support provided by onsemi