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參數(shù)資料
| 型號： | LB11985H |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | VCR Capstan Motor Brushless Motor Driver |
| 中文描述： | 錄像機絞盤電機無刷電機驅(qū)動 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 82K |
| 代理商： | LB11985H |
No. 6209-6/9
LB11985H
Pin Functions
Pin No.
Symbol
Pin Voltage
Description
Equivalent circuit
Ground for circuits other than the output transistors.
The lowest potential of the output transistors will be
the that of the RF pin.
Output block power supply
1
VS1
8 V to 15 V
6
7
8
2
1
5
20
50 k
20
50 k
1
1
A13015
9
VS1
A13016
Coil output
6
U
OUT
Motor midpoint connection.
Half-wave drive is implemented by connecting the
motor midpoint to this pin.
9
MCOM
Continued on next page.
A diode is internally connected between VS1 and
this pin to prevent reverse current flow in half-wave
operating mode.
2
VS2
Ground sensing.
The influence of the common ground impedance on
Rf can be excluded by connecting this pin to the
ground near the Rf resistor in the motor ground lines
that include RF. (This pin must not be left open.)
3
GSENSE
Output current detection.
Current feedback is applied to the control block by
inserting the resistor Rf between these pins and
ground. Also, both the lower side saturation
prevention circuit and the torque ripple correction
circuit operate according to the voltage on this pin. In
particular, since this voltage sets the oversaturation
prevention level, the lower side oversaturation
prevention operation can be degraded if the value of
this resistor is set too low.
Note that the POWER pin and the SENSE pin must
be connected together.
4
5
RF(SENSE)
RF(POWER)
7
V
OUT
8
W
OUT
FRAME GND
Unit (resistance :
)
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