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L9907ND Datasheet

  • L9907ND

  • MOTOR BRIDGE FOR HEADLIGHT ADJUSTMENT

  • 8頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L9907N
Figure 6:
Control to feedback transfercharacteristic
for proportionalregulation with reduced
V
C
operating range:
V
BAT
D95AT187A
V
S
-2V
V
F
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鈩?typ. To activate the HIGH
disable comparator an input current of 35碌A(chǔ) typ.
is needed. To respect this behaviour in the appli-
cation V
CR
is specified for different R
INC.
1.5V
0
1.5V
ALLOWED VC OPERATING RANGE
V
S
-2V
V
C
V
BAT
Figure 7:
Recommended Application Circuit Diagram with L9907N for proportional regulation with reduced
R
INF2
鈰?/div>
V
C
:
V
C
operating range. For ideal adjusted condition V
F
=
R
INF2
+
R
INF2
MODULE
V
BAT
D1
I
Q
C
S
V
S
R
PR
R
INC
I
INC
INC
PR
OUT C
R
F
D2
R
C
V
C
R
CF
V
INC
R
INF1
V
INF
I
INF
L9907N
V
M
OUT F
I
M
M
V
F
INF
R
INF2
GND
D95AT188
Note:
Recommended value of R
INC
, R
INF
(equivalent input resistance to I
NC
and I
NF
) is 5K鈩?to 10K鈩? Resistor R
CF
should assure that the differential
input voltage |V
INC
- V
INF
| remains within the NEUTRAL ZONE, when the control signal wire become broken. When this condition is fulfilled the
motor will not change its previous position.
6/8

L9907ND 產(chǎn)品屬性

  • STMicroelectronics

  • 馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器

  • Full Bridge Motor Driver

  • SMD/SMT

  • SO-20

  • Tube

  • + 150 C

  • 1000

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