onsemi

UC3844BDR2G  

DC DC Switching Controllers

UC3844BDR2G Description

The UC3844BDR2G from onsemi is a high-performance current-mode PWM controller designed for DC-DC switching power supply applications. This surface-mount IC (14-SOIC package) operates within a 10V to 36V supply range, making it suitable for a wide variety of power conversion systems. With a switching frequency capability of up to 500kHz, it supports boost and flyback topologies, delivering precise control for efficient power management. The device features 48% maximum duty cycle and frequency control, ensuring stable performance in demanding environments. Its isolation-capable positive output configuration enhances flexibility in circuit design, while its ROHS3 compliance and REACH-unaffected status meet modern environmental standards.

UC3844BDR2G Features

• Current-Mode PWM Control: Enhances loop response and simplifies compensation.
• Wide Input Voltage Range (10V–36V): Supports diverse power supply designs.
• High Switching Frequency (500kHz max): Enables compact magnetics and higher power density.
• Isolation-Capable Output: Facilitates isolated power supply architectures.
• 48% Duty Cycle Limit: Prevents transformer saturation in flyback designs.
• Single Output with Frequency Control: Optimized for precision in voltage regulation.
• Surface-Mount 14-SOIC Package: Ideal for space-constrained PCB layouts.
• Industrial Temperature Range (0°C to 70°C): Reliable operation in standard environments.

UC3844BDR2G Applications

This controller is ideal for:

• Switch-Mode Power Supplies (SMPS): Including offline and DC-DC converters.
• Flyback Converters: For low-to-medium power isolated supplies.
• Boost Converters: In battery-powered systems requiring voltage step-up.
• LED Drivers: Providing stable current control for lighting applications.
• Industrial Power Systems: Where robust and efficient power conversion is critical.

Conclusion of UC3844BDR2G

The UC3844BDR2G stands out for its versatility, high-frequency operation, and robust control features, making it a top choice for engineers designing efficient and compact power supplies. Its wide input range, isolation capability, and duty cycle control provide distinct advantages over basic PWM controllers, particularly in flyback and boost applications. With onsemi’s reliability and compliance with environmental standards, this IC is a dependable solution for modern power management challenges.

UC3844BDR2G Documents

Download datasheets and manufacturer documentation for UC3844BDR2G

PCN Assembly/Origin :

Wafer Fab 18/May/2023      

Datasheets :

UC3844B, 3845B, 2844B, 2845B      

HTML Datasheet :

UC3844B, 3845B, 2844B, 2845B      

Environmental Information :

onsemi RoHS       onsemi REACH       Material Declaration UC3844BDR2G