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UC3525A Datasheet Regulating Pulse Width Modulators

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community UC1525A, UC1527A, UC2525A UC2527A, UC3525A, UC3527A SLUS191D – FEBRUARY 1997 – REVISED JULY 2017 UCx52xA Regulating Pulse Width.

General Description

The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies.

The on-chip 5.1-V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors.

A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock.

Key Features

  • 1 8-V to 35-V Operation.
  • 5.1-V Reference Trimmed to 1%.
  • 100-Hz to 500-kHz Oscillator Range.
  • Separate Oscillator Sync Terminal.
  • Adjustable Dead-Time Control.
  • Internal Soft Start.
  • Pulse-by-Pulse Shutdown.
  • Input Undervoltage Lockout With Hysteresis.
  • Latching PWM to Prevent Multiple Pulses.
  • Dual Source and Sink Output Drivers 2.

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