参数资料
型号: LB1998
元件分类: 运动控制电子
英文描述: DISK DRIVE MOTOR CONTROLLER, 1.3 A, PDSO28
封装: 0.375 INCH, HSOP-28
文件页数: 6/7页
文件大小: 120K
代理商: LB1998
LB1998
No.5979-6/7
Continued from preceding page
Pin No.
Pin name
Pin voltage
Pin function
Equivalent circuit
1
VCIN
0V to 3.5V
Speed control voltage supply pin.
V type control technique.
VCIN > VCREF : Forward
VCIN < VCREF : Slowdown
(Reverse-blocking circuit prevents reverse
rotation.)
23
VCC1
200
6pF
1
6
A6A6A
18
RF
Upper side output PNP transistor collector pin
(common for all 3 phases). For current
detection, connect resistor between VCC2 pin
and RF pin. Constant current control and
current limiter works by detecting this voltage.
20
UOUT
U phase output.
21
VOUT
V phase output.
22
WOUT
W phase output.
PWR GND
Output transistor GND.
VCC2
3.9
18
20 21 22
3.9
PWR GND
25
FGSEL
Hall FG/3 Hall FG output,
switching pin:
High
→ 3 Hall FG
Low/Open
→ 1 Hall FG
25
VCC1
50k
75k
7
BRAKE
Brake mode switching pin.
BRAKE:
High
→ Short brake
Low/Open
→ Reverse brake
Brake mode changes when VCIN > VCREF.
7
VCC1
50k
75k
100
A
2
RIN1
Gain switching selector pin.
When set to High (VCC1), resistor connected
between ROUT1 and VCIN is selected as
negative feedback resistor.
3
RIN2
Gain switching selector pin.
When set to High (VCC1), resistor connected
between ROUT2 and VCIN is selected as
negative feedback resistor.
4
RIN3
0 to VCC1
Low: 0V
High: 5V
Gain switching selector pin.
When set to High (VCC1), resistor connected
between ROUT3 and VCIN is selected as
negative feedback resistor.
26
ROUT1
27
ROUT2
28
ROUT3
Negative feedback resistor connector pins.
Connect negative feedback resistors between
these pins and VCIN.
3
VCC1
10k
2
4
27
26
28
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