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Product Detailed Parameters
- Description：UC2854BM ENHANCED HIGH POWER FAC
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Mode：-
- Frequency - Switching：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Current - Startup：-
- Grade：-
- Qualification：-
Download product information
Overview
The UC2854BJ is an advanced high-power factor preregulator manufactured by Texas Instruments, designed for power factor correction applications. It operates within a supply voltage range of 10 V to 20 V and supports switching frequencies up to 200 kHz. The device functions in average current mode control with pulse width modulation. It is housed in a 16-pin SOIC package and is rated for operation between -40°C and +85°C.
Feature Summary
- Implements average current mode control for precise input current shaping
- Integrates zero-power detection to minimize standby losses
- Features built-in PWM duty cycle clamp for reliable operation
Applications
- Power factor correction pre-regulators
- High-performance AC-DC power supplies
- Industrial power management systems
Procurement Notes
Verify the specific suffix against official documentation to confirm temperature grade and packaging details. Ensure compatibility with existing PCB footprints for the 16-SOIC package. Confirm moisture sensitivity levels prior to assembly. Cross-reference with updated datasheets for any discontinuance notifications or alternative recommendations from the manufacturer.
Selection Notes
Select this component for designs requiring high-efficiency power factor correction with average current mode control. It is suitable for applications needing a wide operating voltage range and robust thermal performance. Consider the 16-SOIC package constraints for board space. Evaluate the 200 kHz switching frequency against electromagnetic interference requirements.
Part Context
This part belongs to the UCx854 family of high-power factor preregulators from Texas Instruments. These controllers are engineered to meet regulatory standards for harmonic distortion. The UC2854 variant offers enhanced performance over earlier generations, providing improved line regulation and transient response capabilities for modern power supply designs.
Replacement Considerations
UC2854ADWTR
FAQ
What control mode does the UC2854BJ utilize?
It utilizes average current mode control with pulse width modulation.
What is the maximum switching frequency?
The maximum switching frequency is 200 kHz.
