U846B, U846BA, U846BAFP Selling Leads, Datasheet
MFG:TFK Package Cooled:DIP-8 D/C:99+
U846B, U846BA, U846BAFP Datasheet download
Part Number: U846B
MFG: TFK
Package Cooled: DIP-8
D/C: 99+
U846B, U846BA, U846BAFP
- Table of contents:
Info of U846B
Info of U846BA
Info of U846BAFP
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About U846B-FP
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Datasheet: U846B-FP
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About U840B
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Datasheet: U840B
File Size: 173366 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
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About U840B
PDF/DataSheet Download
Datasheet: U840B
File Size: 173366 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
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U846B General 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 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 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.
U846B Maximum Ratings
|
Parameters |
Symbol |
Value |
Unit |
|
Supply voltage t = 60 s |
VBatt |
24 |
V |
|
Ambient temperature range |
Tamb |
-40 to +100 |
|
|
Storage temperature range |
Tstg |
-55 to +125 |
|
|
Maximum junction temperature |
Tj |
150 |
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 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)
` 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)
U846B Typical 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.
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