Description
As a convenience feature of the windshield wiper intermittent and wipe/wash operation
are implemented in most of the automobiles. The U641B is the low-cost solution for an
accurate timing function control. Wipe/wash mode has priority over interval mode.
Interval pause and afterwiping 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 U641B.
Features
● Interval pause: 4 to 20 s
● Afterwiping 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
 

Main products as follows:

1. Auto/moto flasher relay IC LT4761 LD1041 U2043B L2044L LD1204

2. Auto windshield wiper blade control IC U641B U642B LD33197

3. Auto high energy/hall electronic ignitor IC LD3334 LD3335 LD497 LD79076

4.Moto magnetic signal ignition control IC

5.Auto rear windows heating timer LD6046

6.Auto metal proximity detector IC LD209A

7.Hall sensors

8.PWM lights control IC (available for backlight of auto instrument ) LD6083B

9.Power darlington transistor BU931ZT BU941ZT 2SD1071 TIP142 TIP147

10.Current regulative diode

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Catalog and datasheet will be provided if needed.