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U641B - INTERVAL AND WIPE/WASH WIPER CONTROL IC

General Description

The U641B is a bi-polar integrated circuit designed for the wiper application in the automotive market.

It includes wipe, wash and internal mode.

Key Features

  • Interval Pause: 4 to 20 s.
  • After-wiping Time: 2 to 20 s.
  • Wiper Motor's Park Switch.
  • 0.6 s Prewash Delay.
  • Wipe/Wash Mode Priority.
  • One External Capacitor Determines All Time Sequences.
  • Relay Driver with Z-diode.
  • Interference Protection According to VDE 0839 or ISO/TR 7637/1.
  • Load-dump Protected.

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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
U642B Interval- and Wipe/ Wash Wiper Control IC
U643 Flasher/ 30-mohm Shunt
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U643B Flasher IC

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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Features • Interval Pause: 4 to 20 s • After-wiping Time: 2 to 20 s • Wiper Motor's Park Switch • 0.6 s Prewash Delay • Wipe/Wash Mode Priority • One External Capacitor Determines All Time Sequences • Relay Driver with Z-diode • Interference Protection According to VDE 0839 or ISO/TR 7637/1 • Load-dump Protected Description The U641B is a bi-polar integrated circuit designed for the wiper application in the automotive market. It includes wipe, wash and internal mode. Functional Description As a convenience feature of the windshield wiper, intermittent and wipe/wash operation functions are implemented in most of the automobiles. The U641B is a costeffective solution for an accurate timing function control. Wipe/wash mode has priority over interval mode.