u6044b ETC-unknow, u6044b Datasheet - Page 4

• Manufacturer Part Number: u6044b
• Description: Radiator Controlled Timer
• Manufacturer: ETC-unknow

U 6044 B
Relay control output behaviour, Pin 2,
figure 4
Integrated circuit controls the cooling fan motor in
automobile by means of a relay.
Relay control output, Pin 2, is disabled when the battery
voltage, V
conditions of the switch, S
which starts when the ignition is switched-OFF This is
possible only after the debounce time, t
Air condition input, Pin 5
The relay control output, Pin 2 follows the condition of the
AC input, independent of operating conditions.
4
Delay time
S
AC
93 7746 e
th
Ignition
Batt
Closed
Relay
Closed
Open
V
Open
, is applied. Relay control output follows the
Batt
t
d
th
., during the delay time, t
3.
Figure 4 Timing waveform
d
,
V
Batt
94 8812
510
47
R
1
C
t
3
m
W
1
F
Figure 5 Basic circuit
TELEFUNKEN Semiconductors
8
1
Terminal 15
7
2
100 nF
20 k
200 k
C
Rev. A1: 12.12.1994
R
3
2
W
W
3
6
R
100 nF
3
C
2
Thermal
5
4
switch
S
Pin 3
Pin 4
Pin 5
Pin 2
2 k
th
R
4
R
W
5