U6046B Datasheet, PDF (2/11 Pages) TEMIC Semiconductors – Rear Window Heating Timer

U6046B / U6047B
Pin Configuration
Pin Symbol
Function
1
GND Reference point, ground
2 RELAY Relay control output
3
ON Switch-on input
4
OFF Switch-off input
5 TOGGLE Toggle input
6
OSC RC oscillator input
7
V_stab Stabilized voltage
8
V_S Supply voltage
GND 1
RELAY 2
ON 3
OFF 4
8 _VS
7 V_stab
6 _OSC
5 TOGGLE
94 8844
Functional Description
Figure 2. Pinning
Power Supply, Pin 8
For reasons of interference protection and surge immu-
nity, the supply voltage (Pin 8) must be provided with an
RC circuit as shown in figure 3. Dropper resistor, R₁,
limits the current in case of overvoltage, whereas C₁
smoothes the supply voltage at Pin 8.
W m Recommended values are: R₁ = 510 , C₁ = 47 F.
The integrated Z-diode (14 V) protects the supply volt-
age,V_S. Therefore, the operation of the IC is possible
between 6 V and 16 V, supplied by V_Batt.
However, it is possible to operate the integrated circuit
with a 5 V supply, but it should be free of interference
voltages. In this case, Pin 7 is connected to Pin 8 as shown
in figure 4, and the R₁C₁ circuit is omitted.
V_Batt
R₁ ^{510 W}
C₂
C₁
R₂
47 mF/
16 V ₈
7
6
5
U6046B
U6047B
1
2
3
4
94 8749
Figure 3. Basic circuit for 12 V supply and oscillator
V_S = 5 V
C₂
R₂
V_Batt
8
7
6
5
U6046B
U6047B
1
2
3
4
94 8750
Figure 4. Basic circuit for V_S = 5 V
2 (11)
TELEFUNKEN Semiconductors
Rev. A2, 03-Feb-97