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參數(shù)資料
| 型號(hào)： | LB1987 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| 中文描述： | 三相無(wú)刷電機(jī)錄像機(jī)絞盤(pán)馬達(dá)驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 5/17頁(yè) |
| 文件大?。?/td> | 148K |
| 代理商： | LB1987 |
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No. 6109-5/17
LB1987, 1987D, 1987M, 1987H
Continued from preceding page.
Pin
Function
Equivalent circuit diagram
Forward/reverse selection.
The direction (forward or reverse) is selected by the voltage applied to this
pin.
(Vth = 2.5 Vtyp at V
CC
= 5 V)
FR
A12210
200
FR
200
μ
A
1/2
VCC
VCC
VCC
VCC
VCC
ADJ
1
6 k
1
500
6 k
1
1
20
μ
A
Input used when the FG amplifier inverting input is used. Connect a
feedback resistor between the FG
OUT
pin and this pin.
FG
IN
–
300
300
5
μ
A
FGin(–)
FGin(+)
A12211
1
2
300
1
FGOUT
VCC
VCC
VCC
1
FC
A12212
1
5
FGS
VCC VCC
VCC
A12517
1
GSENSE
A12518
Non-inverting input used when the FG amplifier is used as a differential input
amplifier.
No bias is applied internally.
FG
IN
+
FG amplifier output.
This pin includes an internal load resistor.
FG
OUT
Speed control loop frequency characteristics correction.
FC
Ground for all systems other than the output transistors.
Note that the lowest potential of the output transistors is determined by the
Rf pin.
GND
FG pulse output.
This pin includes an internal load resistor.
(The output impedance is about 3 k
.)
FGS
Power supply for all IC internal circuits other than the output block.
This power supply must be stabilized to prevent ripple or other noise from
entering the circuit.
V
CC
Ground sensing.
The influence of the common ground impedance on Rf can be excluded by
connecting this pin to ground near the Rf resistor side of the motor ground
wiring that includes Rf.
(This pin must not be left open.)
GSENSE
External torque ripple correction ratio adjustment.
To adjust the correction ratio, apply the stipulated voltage to the ADJ pin
from a low-impedance external circuit.
If the applied voltage is increased, the correction ratio falls, and if the applied
voltage is lowered, the correction ratio increases.
The range of variation is from 0 to two times the correction ratio when the pin
is left open.
(This pin is set to about V
CC
/2 internally, and has an input impedance of
about 5 k
.)
ADJ
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LB1987D | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987H | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987M | Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1988N | Three-Phase Sensorless Motor Driver + Loading Motor Driver |
| LB1989 | Three-Phase Sensorless VCR Drum Motor Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB-1987 | 制造商:Ideal Industries Inc 功能描述:Ideal |
| LB1987D | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987H | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1987M | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for VCR Capstan Motors |
| LB1988N | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Three-Phase Sensorless Motor Driver + Loading Motor Driver |
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