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參數資料
| 型號： | U690B |
| 英文描述： | Rear Wiper Interval/Wipe-Wash Control |
| 中文描述： | 后雨刷間隔/擦，洗控制 |
| 文件頁數： | 2/9頁 |
| 文件大小： | 102K |
| 代理商： | U690B |
U690B
Rev. A2, 28-Apr-97
( )
Block Diagram
Stabilization
Power-on-Reset
Load-dump detection
Debouncing
Oscillator
Frequency comparator
GND
Relay
output
94 9297
Relay output
Logic
OSC
V
stab
6
7
8
R
2
C
2
R
1
C
1
1 k
10 nF
V
Batt
360 k
47 F
1
2
Signal
input
3
Program
input
5
Retrigger
input
4
56 k
R
5
C
5
1 nF
1 k
R
6
R
3
130 k
L
Hyst
180 k
R
4
15
53
Water
pump
V
Batt
15
Wiper
motor
Figure 1. Application circuit for rear wiper interval/wipe-wash control
Functional Description
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 2. Dropper resistor, R
1
, lim-
its the current in case of overvoltage, whereas C
1
smoothes the supply voltage at Pin 8.
Recommended values are: R
1
= 1 k , C
1
= 47 F.
An integratd Z-diode (7.3 V) generates the stabilized
voltage, V
stab
, therefore, the operation of the IC is
possible between 6 V and 16 V, supplied by V
Batt
(Terminal 15).
U690B
1
2
6
5
8
7
3
4
Relay
94 8868
15
1 k
R1
47 F/10 V
C1
R2
C2
Figure 2. Basic circuitry
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