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参数资料
| 型号： | LB1820 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDIP28 |
| 封装： | 0.500 INCH, DIP-28 |
| 文件页数： | 5/7页 |
| 文件大小： | 320K |
| 代理商： | LB1820 |
LB1820
No.3302-5/7
Pin Description
Pin No.
Pin Name
Functions
19, 20
IN+1, IN–1
OUT1: Hall element input pins for Phase 1. ‘‘H’’ logic is the state when IN+ > IN–.
17, 18
IN+2, IN–2
OUT2: Hall element input pins for Phase 2. ‘‘H’’ logic is the state when IN+ > IN–.
15, 16
IN+3, IN–3
OUT3: Hall element input pins for Phase 3. ‘‘H’’ logic is the state when IN+ > IN–.
6
OUT 1
Output pin 1.
8
OUT 2
Output pin 2.
10
OUT 3
Output pin 3.
2VCC
Power supply for other than output blocks.
12
VM
Power supply for output blocks.
11
Rf
Output current detection pin. Rf is connected across this pin and GND to detect the output current as
voltage.
14
GND
Ground for other than output blocks.
The lowest potential of output transistor is the voltage at Rf pin.
3
CR
Sets the oscillating frequency of the switching regulator.
1
OSC
Outputs duty-controlled pulses.
Open-collector output.
24
INTOUT
Integrator output pin (speed control pin).
Varies the switching regulator output voltage.
25
INTIN
Integrator input pin.
23
DOUT
Speed discriminator output pin.
Goes LOW when the specified speed is exceeded.
4
C
Suppresses ripples in the motor current during operation of current limiter 2.
22
LD
Lock detection pin.
Goes HIGH when the motor rotation speed is within the locking range.
27
FGIN–
FG pulse input (Start/Stop control) pin.
26
FGIN+
FG pulse input (4 V supply) pin.
28
FGOUT
FG amp output pin.
21
Xtal
Crystal oscillator connecting pin.
13
5 V
5 V supply pin.
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