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参数资料
| 型号： | L9907ND |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.8 A, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 6/8页 |
| 文件大小： | 159K |
| 代理商： | L9907ND |
rating for VS. 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 VINC >
VINCH, typically VS -1.2V or decreases below the
LOW control input disable threshold VINC > VINCH,
typically 1.2V, then both outputs will be forced to
tristate.
The potential of the INC 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
A typ.
is needed. To respect this behaviour in the appli-
cation VCR is specified for different RINC.
VBAT
VS -2V
1.5V
VF
0
1.5V
VS -2V
VBAT
VC
D95AT187A
ALLOWED VC OPERATING RANGE
Figure 6: Control to feedback transfer characteristic
for proportional regulation with reduced
VC operating range:
D1
D2
CS
IQ
RC
VINC
RINF1
RINC
RPR
RCF
PR
L9907N
IINC
INC
VINF
IINF
INF
VS
RF
VC
VF
GND
OUT C
OUT F
M
VM
IM
VBAT
D95AT188
MODULE
RINF2
Figure 7: Recommended Application Circuit Diagram with L9907N for proportional regulation with reduced
VC operating range. For ideal adjusted condition VF
=
RINF2
+ RINF2
VC:
Note:
Recommended value of RINC, RINF (equivalent input resistance to INC and INF) is 5K
to 10K. Resistor RCF should assure that the differential
input voltage |VINC - VINF| 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.
L9907N
6/8
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相关代理商/技术参数 |
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|---|---|
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