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UC3825B - HIGH-SPEED PWM CONTROLLER

Download the UC3825B datasheet PDF. This datasheet also covers the UC3823A variant, as both devices belong to the same high-speed pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM controllers are improved versions of the standard UC3823 and UC3825 family.

Performance enhancements have been made to several of the circuit blocks.

Key Features

  • Improved versions of the UC3823/UC3825 PWMs.
  • Compatible with voltage-mode or current-mode control methods.
  • Practical operation at switching frequencies to 1 MHz.
  • 50-ns propagation delay to output.
  • High-current dual totem pole outputs (2-A peak).
  • Trimmed oscillator discharge current.
  • Low 100-μA startup current.
  • Pulse-by-pulse current limiting comparator.
  • Latched overcurrent comparator with full cycle restart 2 Descr.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC3823A-etcTI.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Texas Instruments

Part Number Description
UC3825A HIGH-SPEED PWM CONTROLLER
UC382-1 Fast LDO Linear Regulator
UC382-2 Fast LDO Linear Regulator
UC382-3 Fast LDO Linear Regulator
UC382-ADJ Fast LDO Linear Regulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
UC1823A, UC2823A, UC2823B, UC3823A, UC3823B UC1825A, UC2825A, UC2825B, UC3825A, UC3825B SLUS334F – AUGUST 1995 – REVISED AUGUST 2022 High-Speed PWM Controller 1 Features • Improved versions of the UC3823/UC3825 PWMs • Compatible with voltage-mode or current-mode control methods • Practical operation at switching frequencies to 1 MHz • 50-ns propagation delay to output • High-current dual totem pole outputs (2-A peak) • Trimmed oscillator discharge current • Low 100-μA startup current • Pulse-by-pulse current limiting comparator • Latched overcurrent comparator with full cycle restart 2 Description The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM controllers are improved versions of the standard UC3823 and UC3825 family.