UC3844BN - onsemi

Manufacturer Part Number

UC3844BN

Manufacturer

onsemi

Introduction

The UC3844BN is a high-performance fixed frequency current-mode controller used for DC-DC switching converters.

Product Features and Performance

Fixed frequency current-mode control

Feedback compensation with a Single Current Loop Architecture

High gain bandwidth error amplifier

Under-Voltage Lockout for safe operation

Trimmed oscillator for precise frequency control

Product Advantages

Highly stable operation for a wide range of supply voltages

Optimized for minimal external components

Provides inherent pulse-by-pulse control

Robust output drive capability for various power MOSFETs

Key Technical Parameters

Voltage - Supply (Vcc/Vdd): 10V ~ 36V

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

Overcurrent protection capability

Compatibility

Through Hole Mounting for easy insertion into printed circuit boards

Compatible with a wide range of power MOSFETs

Application Areas

Switching power supplies

Power converters for computers and telecom equipment

Battery chargers

LED drivers

Product Lifecycle

Obsolete - Advocate for replacement with newer models or options

Check for availability of replacements or alternate upgrades

Several Key Reasons to Choose This Product

Robust design suitable for demanding power applications

Allows for compact and efficient power supply designs

Ease of use due to minimal external component requirement

Versatility for both step-up and step-down configurations

Strong reputation of the onsemi brand for power management solutions