UC3842BD1R2G - onsemi

Manufacturer Part Number

UC3842BD1R2G

Manufacturer

onsemi

Introduction

The UC3842BD1R2G is a high-performance, fixed frequency, current-mode PWM controller designed for DC to DC switching converters.

Product Features and Performance

Fixed-frequency, current-mode operation enhances stability and response

Capable of implementing boost, flyback topologies

Positive output configuration with isolation capability

Supports up to 500kHz switching frequency, allowing for smaller passive components

96% maximum duty cycle enables high step-up ratios in boost converters

Operates from a wide supply voltage range (10V to 30V)

Product Advantages

High efficiency due to current-mode control and high duty cycle

Versatile across various topologies for broader application reach

Compact 8-SOIC package saves board space

High frequency operation reduces the size of external components

Key Technical Parameters

Voltage Supply (Vcc/Vdd): 10V ~ 30V

Frequency Switching: Up to 500kHz

Duty Cycle (Max): 96%

Output Type: Transistor Driver

Operating Temperature: 0°C ~ 70°C (TA)

Quality and Safety Features

Integrated under-voltage lockout ensures reliable startup

Overcurrent protection enhances safety and product lifespan

Compatibility

Suitable for surface mount technology (SMT), facilitating modern PCB design

8-SOIC packaging is compatible with standard soldering and assembly processes

Application Areas

Power supplies

LED lighting systems

Battery chargers

Telecom equipment

Product Lifecycle

Currently active product, no known discontinuation date

Onsemi typically provides notification for end-of-life products, offering replacements or upgrades

Several Key Reasons to Choose This Product

High-frequency operation permits the use of smaller external components reducing overall size and cost

The flexibility of supporting both step-up and step-up/step-down configurations increases design versatility

Current-mode control provides superior transient response and simplified loop compensation

Wide input voltage range accommodates various power sources and applications

The product is actively maintained by onsemi, ensuring long-term availability and support