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UC1842B-D - HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

General Description

The UTC UC1842B-D/1843B-D are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.

The differences between UC1842B-D and UC1843B-D are the under-voltage lockout thresholds.

Key Features

  • S.
  • Operation output switching frequency up to 500 kHz.
  • Automatic feed forward compensation.
  • Latching PWM for cycle-by-cycle current limiting.
  • High current totem pole output.
  • Internally trimmed reference with under voltage lockout.
  • UVLO with hysteresis.
  • Low startup and operating current.

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Other Datasheets by Unisonic Technologies

Part Number Description
UC1843B-D HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

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.

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UNISONIC TECHNOLOGIES CO., LTD UC1842B/43B-D HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS LINEAR INTEGRATED CIRCUIT  DESCRIPTION The UTC UC1842B-D/1843B-D are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC1842B-D and UC1843B-D are the under-voltage lockout thresholds. The UC1842B-D ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC1843B-D has UVLO thresholds of 8.4V(ON) and 7.6V(OFF) for lower voltage applications.