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參數(shù)資料
| 型號： | L9907N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MOTOR BRIDGE FOR HEADLIGHT ADJUSTMENT |
| 中文描述： | 汽車大燈調(diào)整橋 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 83K |
| 代理商： | L9907N |
rating for V
S
. The device features an output dis-
able function in case of control input voltage over-
drive.
When the control input voltage increases above
the HIGH control input disable threshold V
INC
>
V
INCH
, typically V
S
-1.2V or decreases below the
LOW control input disable threshold V
INC
> V
INCH
,
typically 1.2V, then both outputs will be forced to
tristate.
The potential of the I
NC
pin is clamped at the Con-
trol Input HIGH disable threshold potential with a
series resistor of 5K
typ. To activate the HIGH
disable comparator an input current of 35
μ
A typ.
is needed. To respect this behaviour in the appli-
cationV
CR
is specifiedfor differentR
INC.
V
BAT
V
S
-2V
1.5V
V
F
0
1.5V
V
S
-2V
V
BAT
V
C
D95AT187A
ALLOWED VC OPERATINGRANGE
Figure 6:
Controltofeedbacktransfercharacteristic
forproportionalregulation with reduced
V
C
operatingrange:
D1
D2
C
S
I
Q
R
C
V
INC
R
INF1
R
INC
R
PR
R
CF
PR
L9907N
I
INC
INC
V
INF
I
INF
INF
V
S
R
F
V
C
V
F
GND
OUT C
OUT F
M
V
M
I
M
V
BAT
D95AT188
MODULE
R
INF2
Figure 7:
RecommendedApplicationCircuit Diagramwith L9907Nforproportionalregulationwith reduced
V
C
operatingrange. For ideal adjustedcondition V
F
=
R
INF2
R
INF2
+
R
INF2
V
C
:
Note:
Recommended value of R
, R
(equivalent input resistance to I
and I
) is 5K
to 10K
. Resistor R
should assure that the differential
inputvoltage |V
- V
| remainswithin the NEUTRAL ZONE, when the control signal wire become broken. When this condition is fulfilled the
motor will not change its previous position.
L9907N
6/8
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