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TEMIC Semiconductors - Radiator fan controlled timer

Numéro de référence U6044B
Description Radiator fan controlled timer
Fabricant TEMIC Semiconductors 
Logo TEMIC Semiconductors 





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U6044B fiche technique
TELEFUNKEN Semiconductors
Radiator fan controlled timer
U 6044 B
Description
The bipolar integrated circuit, U 6044 B, is designed as a
radiator fan controlled timer. After the ignition is switched
off, the thermal switch of the engine can activate the
radiator fan via relay for a preset period, to support the
cool-off process. In addition, an air-conditioning contact
can switch on the radiator fan at any time.
Features
D Delay time range: 4 s to 20 h
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D Cool-off time starts when thermal switch is closed
D RC oscillator determines switching characteristics
D Relay driver with Z-diode
D Debounced input for coolant temperature switch
D Not debounced input for ignition key (Terminal 15)
D Low standby current
D Load dump protection
D RF interference protected
D Protection according to ISO/TR 7637-1 (VDE 0839)
Cases:
DIP 8, SO 8
C2
OSC 6
R2
10 mF
C1 R1
Vstab 7
VS 8
510 W
x
VBatt
Oscillator
Stabilization
Power-on reset
Load dump detection
1
GND
Frequency divider
Debouncing
Monoflop
Logic
Relay control 2
output
Thermal switch
300 kRW4
4 Air condition 5
300 kRW5
Ignition 3
C4
100 nF
C3
1 kRW6
1 kW R7
100 nF
R3 20 kW
94 9232
Terminal 15
x
Figure 1 Block diagram with external circuit
Rev. A1: 12.12.1994
1

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