U642B Interval and Wipe/ Wash Wiper Control IC

U642B Interval and Wipe/ Wash Wiper Control IC

Product Details:


Product Description


As a convenience feature of the windshield wiper intermittent and wipe/wash operation are implemented in most of the automobiles. The U642B is the low-cost solution for an accurate timing function control. Wipe/wash mode has priority over interval mode. Interval pause and after wiping time can be set to fixed values by using resistors in a broad time range. Added value can be provided with an individual, continuous adjustment of the interval pause by a potentiometer which may be built into the stalk. For proper operation it is mandatory to feed the signal of the wiper motor's park switch into U642B.


  • Interval pause: 4 to 20 s
  • After wiping time: 2 to 20 s
  • Wiper motor's park switch
  • Wipe/wash mode priority
  • One external capacitor, determines all time sequences
  • Relay driver with Z-diode
  • Load-dump protected

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