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参数资料
| 型号： | LB11998V |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDSO30 |
| 封装： | 0.275 INCH, SSOP-30 |
| 文件页数： | 6/8页 |
| 文件大小： | 111K |
| 代理商： | LB11998V |
LB11998V
No. 8801 -6/8
Continued from preceding page.
Pin No.
Pin
voltage
Description
Equivalent Circuit
25
FC
Control loop frequency characteristics
correction
Current control system closed loop oscillations
can be prevented by connecting a capacitor
between this pin and ground.
26
VCREF
2V
to
3V
Control system reference voltage input
The control system start voltage is determined
by this voltage.
27
VC
0V
to
VCC1
Speed control voltage input
This is a voltage controlled system in which:
The motor turns in the forward direction when
VC > VCREF, and
The motor turns decelerates when VC <
VCREF.
(Since the LB11998V includes a reverse
rotation prevention circuit, the motor will never
turn in the reverse direction.)
30k
Ω
30k
Ω
15k
Ω
10k
Ω
200
Ω
27
26
200
Ω
25
μF
25
μF
100
μF
100
μF
VCC1
29
30
1
2
7
WOUT
P-GND
VOUT
UOUT
RF
W phase output
Output transistor ground
V phase output
U phase output
High side output transistor collector (common
to all three phases)
Connect a resistor between the RF pin and
VCC3 for current detection.
The LB11998V detects this voltage to operate
the constant current control and current limiter
functions.
24
FGSEL
Single Hall sensor/three Hall sensor FG
switching pin
FGSEL : High
→ three Hall senso
Low or open
→ single Hall sensor
18
BRAKE
Short-circuit braking pin
BRAKE : High
→ brake
Low or open
→ drive
25
20k
Ω
5k
Ω
2k
Ω
VCC1
7
3.9
Ω
3.9
Ω
VCC2
1
29
2
30
100
μA
VCC1
50k
Ω
75k
Ω
18
VCC1
50k
Ω
75k
Ω
24
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