Radiator fan controlled timer
TELEFUNKEN Semiconductors
U 6044 B
Radiator fan controlled timer
Description
The bipolar integrated circuit, U 6044 B,...
Description
TELEFUNKEN Semiconductors
U 6044 B
Radiator fan controlled timer
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
www.DataSheet4U.com
D Delay time range: 4 s to 20 h 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 10 m F VS 8 C1 R1 510 W x VBatt
R2 Vstab 7
OSC 6
Oscillator
Stabilization Power-on reset Load dump detection
1 GND
Frequency divider
Debouncing
Monoflop
Logic
Relay control output
2
Thermal switch R4 300 kW R6 1 kW
4 Air condition 5 R5 300 kW 1 kW R7
Ignition 3 C4 100 nF C3 100 nF R3 20 kW Terminal 15
94 9232
x
Figure 1 Block diagram with external circuit Rev. A1: 12.12.1994 1
U 6044 B
Pin Configuration
Pin Symbol 1 GND 2 Output 3 Ignition 4 Sth 5 AC 6 OSC www.DataSheet4U.com 7 Vstab 8 VS Function Reference point, ground Relay control output Signal input, ignition Thermal switch, input Air condition input RC o...
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