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参数资料
| 型号： | LB1922 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 3.1 A, PDIP28 |
| 封装： | HEAT SINK, SDIP-28 |
| 文件页数： | 5/10页 |
| 文件大小： | 101K |
| 代理商： | LB1922 |
No. 5679-4/10
LB1922
Pin Functions
Pin No.
Pin
Function
1
5 V
5-V power supply.
2
7 V
7-V power supply
3VCC
Power supply for all blocks other than the output block
4FGIN+
FG pulse input (4-V power supply pin)
5FGIN–
FG pulse input
6FGOUT
FG amplifier output
7
CR
PWM oscillator frequency setting
8
OUT1
Output 1
9
OUT2
Output 2
10
OUT3
Output 3
11
GND2
Ground for the output block
12
F/R
Forward/reverse control
Forward: low, reverse: high
13
S/S
Start/stop control
Start: low, stop: high
14
VM
Output block power supply. This pin is also used for output current detection. The output current is converted to a
voltage and detected by inserting a resistor (Rf) between this pin and VCC.
20, 19
IN1+, IN1–
Hall input for OUT1
18, 17
IN2+, IN2–
Hall input for OUT2
16, 15
IN3+, IN3–
Hall input for OUT3
21
X’tal
Crystal oscillator. Connect a crystal oscillator to this pin.
22
GND1
Ground for all circuits other than the output block.
23
LD
Lock detection
Outputs a low level when the motor speed is within the lock range, i.e. within ±6.25% of the set speed.
24
DOUT
Speed discriminator output
Outputs a high level on overspeed.
25
INTIN
Integrator input
26
INTOUT
Integrator output (speed control pin)
27
POUT
PLL output
28
FGSOUT
FG amplifier output (After the Schmitt circuit)
Truth Table
Pin Assignment
Note: A high input is defined as IN+ > IN–.
Source
→ Sink
F / R = L
F / R = H
IN1
IN2
IN3
IN1
IN2
IN3
1
OUT2
→ OUT1
H
L
H
L
H
L
2
OUT3
→ OUT1
H
L
H
3
OUT3
→ OUT2
H
L
H
4
OUT1
→ OUT2
L
H
L
H
L
H
5
OUT1
→ OUT3
L
H
L
6
OUT2
→ OUT3
L
H
L
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