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UC3825A Datasheet High-speed Pwm Controller

Manufacturer: Texas Instruments

Overview: UC1823A, UC2823A, UC2823B, UC3823A, UC3823B UC1825A, UC2825A, UC2825B, UC3825A, UC3825B SLUS334F – AUGUST 1995 – REVISED AUGUST 2022 High-Speed PWM Controller.

This datasheet includes multiple variants, all published together in a single manufacturer document.

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.

Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV.

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.

UC3825A Distributor