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UC3845BDR2G  

DC DC Switching Controllers

The UC3845BDR2G is a high-voltage, fixed frequency, current mode PWM controller developed by ON Semiconductor. It is designed for use in offline power supplies, DC-DC converters, and motor control applications.

Description:

The UC3845BDR2G is a monolithic integrated circuit that provides all the features required for a current mode PWM controller. It includes an error amplifier, a pulse width modulator, a driver for the high-side power MOSFET, and a driver for the low-side power MOSFET. The device also includes protection features such as over-current protection, over-temperature protection, and under-voltage lockout.

Features:

1. Fixed 50kHz switching frequency
2. Current mode control for improved line and load regulation
3. High-voltage startup and watch dog timer for reliable operation
4. Over-current protection with hysteresis
5. Over-temperature protection
6. Under-voltage lockout
7. Push-pull output stage with totem-pole structure
8. Synchronous rectification for high efficiency

Applications:

1. Offline power supplies
2. DC-DC converters
3. Motor control applications
4. Battery chargers
5. LED lighting

In summary, the UC3845BDR2G is a versatile PWM controller that offers high performance and reliability for a wide range of power conversion applications. Its fixed frequency operation and current mode control make it well suited for use in applications where precise regulation and high efficiency are required.

UC3845BDR2G Documents

Download datasheets and manufacturer documentation for UC3845BDR2G

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 UC3845BDR2G