LB1824 查看數據表（PDF） - SANYO -> Panasonic
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LB1824 Datasheet PDF : 9 Pages
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LB1824
Logic Table
Parameter
1
2
3
4
5
6
Source → Sink
OUT3 → OUT2
OUT3 → OUT1
OUT2 → OUT3
OUT1 → OUT2
OUT2 → OUT1
OUT1 → OUT3
F/R = Low
IN1
IN2
IN3
H
H
L
H
L
L
L
L
H
L
H
L
H
L
H
L
H
H
F/R = High
IN1
IN2
IN3
L
L
H
L
H
H
H
H
L
H
L
H
L
H
L
H
L
L
Note: ‘H’ for an input indicates the state where IN+ > IN–.
H: High
L: Low
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
(External crystal oscillator circuit)
Pin Functions
External Constants (reference values)
X’tal (MHz)
3 to 4
C1 (pF)
39
C2 (pF)
82
R (kΩ)
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.
Pin name
IN1+, IN1–
IN2+, IN2–
IN3+, IN3–
OUT1
OUT2
OUT3
VCC
VM
GND1
GND2
CR
INT IN
INT OUT
D OUT
P OUT
LD
FG IN+
FG IN–
FG OUT
FGS OUT
X’tal
5V
7V
S/S
F/R
Pin No.
20, 19
18, 17
16, 15
8
9
10
3
14
22
11
7
25
26
24
27
23
4
5
6
28
21
1
2
13
12
Function
OUT1 Hall input pin
OUT2 Hall input pin
OUT3 Hall input pin
Output pin 1
Output pin 2
Output pin 3
Pin for the power supply applied to all blocks other than the output block
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.
Ground for all blocks other than the output block
Output block ground
Pin for setting the PWM oscillator frequency
Integrator input pin
Integrator output pin (speed control pin)
Speed discriminator output pin: overspeed → high
PLL output pin
Lock detection pin. Open collector output. Goes low when the motor speed is within the lock
range (±6.25%).
FG pulse input pin (4 V power supply pin)
FG amplifier output pin
FG amplifier output pin (post-schmitt). Open collector output.
Crystal oscillator pin. Connect the crystal oscillator to this pin.
5 V power supply pin
7 V power supply pin
Start/stop control pin
Start → low, stop → high
Forward/reverse control pin
Forward → low, reverse → high
No. 4264-5/9
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