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參數(shù)資料
| 型號(hào)： | KA3903 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Power Window Motor Control IC |
| 中文描述： | BRUSH DC MOTOR CONTROLLER, 0.4 A, PDIP16 |
| 封裝： | 0.300 INCH, DIP-16 |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 286K |
| 代理商： | KA3903 |
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FAN8903(KA3903)
7
Car-key Turn-off Function
The window can be operated for a certain period even in the state of the start-key to be off. If the start-key is turned off, the dis-
charge time for the voltage V1 to pin #15 will be determined by the following time constant.
User can get a time he wants as the discharge time for the voltage V1 by changing the capacity of the cap (C1) and the values
of the resistances (R1 or R2).
Therefore, the user can operate the window for a limited time (about 30sec) even if the start-key is turned off
Mode Selection
Notes:
1. L : M1 or M2 = Ground, H : M1 or M2 = Open
2. NORMAL: The window is working as long as the up or down switch is pressed.
3. TOGGLE: When the window works by pressing the up or down switch, the window is stopped if the up or down switch is
pressed once more.
4. STEP & AUTO: If the up or down switch is pressed for a certain period (0.3 seconds), the window works for 0.3 seconds,
while 6 seconds if pressed for more than a certain period (0.3 seconds).
Over Voltage Protection(OVP)
It is designed stop the control of the FAN8903 if battery voltage is sensed as about 18.6V or more.
Mode
Pin Name
Operation
M1
L
L
H
H
M2
L
H
L
H
UP
DOWN
LL-MODE
LH-MODE
HL-MODE
HH-MODE
Normal
Normal
Normal
Toggle, step & Auto
Normal
Toggle & Auto
Toggle, step & Auto
Toggle, step & Auto
τ
R1
R2
+
(
)
C1
=
16
18.6V
Rin
180
BAT.
12V
47
μ
F
FAN8903
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