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U846B

Features: ` Interval input: high side` Wipe/ wash input: high side` Park input: low side (park position)` Output driver protected against short circuits` All time periods determined by an RC-oscillator` Typical relay activation time of 500 ms` Adjustable interval pause from 1.2 s to 27 s` Typical ...

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SeekIC No. : 004535115 Detail

U846B: Features: ` Interval input: high side` Wipe/ wash input: high side` Park input: low side (park position)` Output driver protected against short circuits` All time periods determined by an RC-oscilla...

U846B Data Sheet

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Part Number:
U846B
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/23

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Product Details

Description



Features:

` Interval input: high side
` Wipe/ wash input: high side
` Park input: low side (park position)
` Output driver protected against short circuits
` All time periods determined by an RC-oscillator
` Typical relay activation time of 500 ms
` Adjustable interval pause from 1.2 s to 27 s
` Typical pre-wipe delay of 100 ms
` Dry wiping
` With park-switch signal: 2 cycles
` Without park-switch signal typically 5.25 s
` Inputs INT, WASH and PARK digitally debounced
` All inputs with integrated RF protection
` Load-dump protection and interference protection according to ISO 76371/4 (DIN 40839)


Application

Digital interval / wipe/ wash control for windshield or backlite wiper motors with a 22-k potentiometer (typical value) for interval pause adjustment.Recommended oscillator circuitry:
R6 = 36 k ; C2 = 100 nF.




Specifications

Parameters

Symbol

Value

Unit

Supply voltage  t = 60 s
                         t = 600 s

VBatt
VBatt

24
18

V

Ambient temperature range

Tamb

-40 to +100

Storage temperature range

Tstg

-55 to +125

Maximum junction temperature

Tj

150




Description

The U846B is a bipolar integrated circuit for automotive use ("Rugged Silicon") in interval and wipe/ wash control of windshield or backlite wipers.

The interval pause of U846B can be set individually within a wide range by using a potentiometer. Wipe/ wash mode with dry wiping - activated either for 2 wipes or for a certain time - has priority over the interval mode.

The U846B is used in applications to control wiper motors with or without park-switch signal feedback. The integrated relay driver of U846B is protected against short circuits and is switched to conductive condition in the case of a load-dump. By using only a few external components, protection against RF interference and ISO transients can be achieved.




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