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LB1978 Datasheet(PDF) 7 Page - Sanyo Semicon Device

Part # LB1978
Description  Three-Phase Half-Wave Sensorless Motor Driver for Headphone Stereos
PDF  9 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1978 Datasheet(HTML) 7 Page - Sanyo Semicon Device

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LB1978V
No. 6186-7/9
Pin number
11
12
13
14
15
16
17
18
19
20
21
22
Continued from preceding page
Pin name
BR2
TC1
TC2
P1
P2
P3
SGND
DU
U2
V2
W2
PGND
Equivalent circuit
Pin function
Brake drive pin.
When S/S pin is Low and BR1 pin is 0.9V
or higher, brake drive is activated.
This is an open-collector output.
Motor current rise/fall slope setting pins.
Setting value changes depending on the
High or Low status of the F/S pin.
Internal operation measurement pins
which shape the current waveform.
Must be left open for use.
Signal ground pin.
Separate from power supply ground.
DU is base pin for U low-speed output
transistor.
U2, V2, and W2 are pins for connection to
low-speed motor coils.
Power supply ground.
Vcc
SGND
11
Vcc
SGND
13
12
Vcc
SGND
15
14
16
Vcc
PGND
19
20
21
22
18
Continued on next page



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