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参数资料
| 型号： | LB1824 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDIP28 |
| 封装： | HEAT SINK, SDIP-28 |
| 文件页数： | 7/10页 |
| 文件大小： | 116K |
| 代理商： | LB1824 |
LB1824
Logic Table
F/R = Low
F/R = High
Parameter
Source
→ Sink
IN1
IN2
IN3
IN1
IN2
IN3
1
OUT3
→ OUT2
H
L
H
2
OUT3
→ OUT1
H
L
H
3
OUT2
→ OUT3
L
H
L
4
OUT1
→ OUT2
LHLHLH
5
OUT2
→ OUT1
HLHLHL
6
OUT1
→ OUT3
L
H
L
Note: ‘H’ for an input indicates the state where IN+ > IN–.
H: High
L: Low
(External crystal oscillator circuit)
External Constants (reference values)
X’tal (MHz)
C1 (pF)
C2 (pF)
R (k
)
3 to 4
39
82
0.82
4 to 5
39
82
1.0
5 to 7
39
47
1.5
7 to 10
39
27
2.0
Note that the crystal used should have a ratio between the fundamental
wave fO impedance and 3fO impedance of 1:5 or greater.
No. 4264-6/10
The formula below gives the relationship between the crystal oscillator frequency (fOSC) and the FG frequency (fFG).
fFG (servo) = fOSC/(the ECL divider factor (16) × the number of counts)
= fOSC/8192
Pin Functions
Pin name
Pin No.
Function
IN1+, IN1–
20, 19
OUT1 Hall input pin
IN2+, IN2–
18, 17
OUT2 Hall input pin
IN3+, IN3–
16, 15
OUT3 Hall input pin
OUT1
8
Output pin 1
OUT2
9
Output pin 2
OUT3
10
Output pin 3
VCC
3
Pin for the power supply applied to all blocks other than the output block
VM
14
Output block power supply pin. Also used for output current detection: connecting a resistor
(Rf) between this pin and VCC allows the output current to be detected as a voltage.
GND1
22
Ground for all blocks other than the output block
GND2
11
Output block ground
CR
7
Pin for setting the PWM oscillator frequency
INT IN
25
Integrator input pin
INT OUT
26
Integrator output pin (speed control pin)
D OUT
24
Speed discriminator output pin: overspeed
→ high
P OUT
27
PLL output pin
LD
23
Lock detection pin. Open collector output. Goes low when the motor speed is within the lock
range (±6.25%).
FG IN+
4
FG pulse input pin (4 V power supply pin)
FG IN–5
FG OUT
6
FG amplifier output pin
FGS OUT
28
FG amplifier output pin (post-schmitt). Open collector output.
X’tal
21
Crystal oscillator pin. Connect the crystal oscillator to this pin.
5 V
1
5 V power supply pin
7 V
2
7 V power supply pin
S/S
13
Start/stop control pin
Start
→ low, stop → high
F/R
12
Forward/reverse control pin
Forward
→ low, reverse → high
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