Description
As a convenience feature of the windshield wiper intermittent and wipe/wash operation are implemented in most of the automobiles.
Features
- D Interval pause: 4 to 20 s D Afterwiping time: 2 to 20 s D Wiper motor’s park switch D Wipe/wash mode priority D One external capacitor, determines all time sequences D Relay driver with Z-diode D Interference protection according to VDE 0839 or ISO/TR 7637/1 D Load-dump protected
Block Diagram
VS 8 OUT 7 PARK 6 VRef Park switch comparator WASH 5 VRef Input comparator
Load-dump comparator
VRef
Logic
VRef Interval comparator
Wipe / wash comparator
A
B
C
D
E
F
1 GND
2 INT
3 Ct
4 Rt.
U642B Datasheet
