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参数资料
| 型号： | LB1814M |
| 元件分类： | 运动控制电子 |
| 英文描述： | DISK DRIVE MOTOR CONTROLLER, 1 A, PDSO36 |
| 封装： | 0.375 INCH, MFP-36 |
| 文件页数： | 11/13页 |
| 文件大小： | 162K |
| 代理商： | LB1814M |
LB1814M
No.5198-7/13
Pin Functions
Pin No
Symbol
Pin Voltage
Description
Equivalent Circuit
1, 2
17, 18
19, 20
35, 36
GND
Ground
3
4
34
OUT2
OUT1
OUT3
OUT2 output
OUT1 output
OUT3 output
33
RF
Output current detection.
Connect a low resistance resistor (Rf)
between this pin and VCC.
The forward rotation mode output current
(IOUT) is limited according to the equation
IOUT=VRF1/Rf (current limit operation).
5
AGC
AGC amplifier frequency characteristics
correction.
Also serves as the initial reset pin.
Connect a capacitor between this pin and
ground.
The AGC circuit operates in such a way
that the Hall element output amplitude is
kept constant (approx. 40mVp-p) by
controlling the Hall element bias current
(HB pin sink current).
The IC enters and stays in the initial reset
state after the S/B pin is set to the start
mode till the AGC pin voltage goes up to
1.0V.
6
7
8
9
10
11
IN3-
IN3+
IN2-
IN2+
IN1-
IN1+
min 2.0V
max VCC
IN1 Hall input
High when IN1+ > IN1-
Low when IN1+ < IN1-
IN2 Hall input
High when IN2+ > IN2-
Low when IN2+ < IN2-
IN3 Hall input
High when IN3+ > IN3-
Low when IN3+ < IN3-
12
HB
Hall bias.
Held off in power save mode and Hall bias
is cut off.
Continued on next page.
200
1.0V
ILB00635
Comparator for initial reset
5
VCC
300
300
ILB00636
9
7
11
8
6
10
VCC
ILB00637
VCC
12
ILB00634
3
4
33
34
VCC
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