U842B

Features: ` Interval input: low side` Wipe/ wash input: low side` Park input: high side (park position)` Output driver protected against short circuit` All time periods determined by RC oscillator` Fixed relay activation time of 500 ms` Adjustable interval pause from 3 s to 11 s` Fixed pre-wash de...

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U842B Picture
SeekIC No. : 004535114 Detail

U842B: Features: ` Interval input: low side` Wipe/ wash input: low side` Park input: high side (park position)` Output driver protected against short circuit` All time periods determined by RC oscillator` ...

floor Price/Ceiling Price

Part Number:
U842B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2024/4/27

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Product Details

Description



Features:

` Interval input: low side
` Wipe/ wash input: low side
` Park input: high side (park position)
` Output driver protected against short circuit
` All time periods determined by RC oscillator
` Fixed relay activation time of 500 ms
` Adjustable interval pause from 3 s to 11 s
` Fixed pre-wash delay of 400 ms
` Dry wiping
    With park switch signal: 3 cycles
     Without park switch signal: 2.8 s
` Inputs INT, WASH and PARK digitally debounced
` All inputs with integrated RF protection
` Load-dump protection and interference protection according to ISO 7637-1/3 (DIN 40839)



Application

Digital/ wipe-wash control for rear or front wiper


Pinout

  Connection Diagram


Specifications

Parameters
Symbol
Value
Unit
Supply voltage t = 60 s
                      t =600 s
VBatt
VBatt
24
18

V
V

Ambient temperature rang
Tamb
-30to+100
Storage temperature rang
Tstg
-40to+100
max.junction temperature
Tj
150



Description

The U842B circuit is designed as an interval and wipe/ wash timer for automotive wiper control. The interval pause  can be set in a range from 3 s to 11 s by an external 1-k potentiometer. Wipe/wash mode has priority over the interval mode. The U842B controls the wiper motor with/without park switch signal.

The integrated relay driver U842B is protected against short circuits and is switched to conductive condition in the case of a load-dump. With only a few external components, protection against RF interference and transients (ISO/TR 7637-1/3) can be achieved.




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