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UC1843B-SP Datasheet PWM Controller

Manufacturer: Texas Instruments

Overview: www.ti.com UC1843B-SP SLUSDD4B – APRIL 2019 – REVISED DUECCE1M8B4E3RB2-S02P0 SLUSDD4B – APRIL 2019 – REVISED DECEMBER 2020 UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller.

General Description

The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP.

Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved

Key Features

  • QML class V (QMLV) qualified, SMD 5962-86704.
  • 5962R8670412VYC:.
  • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID).
  • Optimized for offline and DC-to-DC converters.
  • Low start-up current (< 0.5 mA).
  • Trimmed oscillator discharge current.
  • Automatic feed forward compensation.
  • Pulse-by-pulse current limiting.
  • Enhanced load response characteristics.
  • Undervoltage lockout (UVLO) with hys.

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