U840BA, U840BAFS, U842B Selling Leads, Datasheet
MFG:tfk Package Cooled:tfk D/C:dc94
U840BA, U840BAFS, U842B Datasheet download
Part Number: U840BA
MFG: tfk
Package Cooled: tfk
D/C: dc94
U840BA, U840BAFS, U842B
- Table of contents:
Info of U840BA
Info of U840BAFS
Info of U842B
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About U840B
PDF/DataSheet Download
Datasheet: U840B
File Size: 173366 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
About U840B
PDF/DataSheet Download
Datasheet: U840B
File Size: 173366 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
About U842B
PDF/DataSheet Download
Datasheet: U842B
File Size: 270841 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
U842B General 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 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.
U842B Maximum Ratings
|
Parameters |
Symbol |
Value |
Unit |
| Supply voltage t = 60 s t =600 s |
VBatt VBatt |
24 18 |
V |
| Ambient temperature rang |
Tamb |
-30to+100 |
|
| Storage temperature rang |
Tstg |
-40to+100 |
|
| max.junction temperature |
Tj |
150 |
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 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)
` 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)
U842B Typical Application
Digital/ wipe-wash control for rear or front wiper
U842B Connection Diagram
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