汽车芯片 IK642B替代U642B

NTERVAL- and WIPE/WASH WIPER CONTROL IC

The lK642B is a bi-polar integrated circuit designed for thewiper application in the automotive market. lt includes wipe, washand internal mode.

FEATURES

• 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

• Prewash Delay 300mS

• Interference Protection According to VDE 0839 or ISO/TR 7637/1

FUNCTIONAL DESCRIPTION

As a convenience feature of the windshield wiper, intermittent and wipe/washoperation functions are implemented in most of the automobiles. The lK642B is a cost.effective solution for an accurate timing function control. Wipe/wash mode has priority overinterval mode. Interval pause and after-wiping time can be set to fixed values by usingresistors in a broad time range. Added value can be provided with an individualcontinuous adjustment of the interval pause by a potentiometer which may be built into thestalk. For proper operation, it is mandatory to feed the signal of the wiper motor's parkswitch into lK642B.