la6502 Sanyo Semiconductor Corporation, la6502 Datasheet - Page 9

• Manufacturer Part Number: la6502
• Description: 5ch Driver For Cd And Dvd Spindle Driver 3-phase Linear Sensor-less Drive Btl 4ch
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
36
35
34
19
18
17
21
24
39
40
AMPIN +
AMPIN -
AMPOUT
SPUOUT
SPVOUT
SPWOUT
SPRF
MCOM
SPC1
SPC2
Pin name
OP-AMP non-inverted input pin.
OP-AMP inverted input pin.
OP-AMP output pin.
Spindle motor driver output pin.
Spindle motor driver output transistor
power pin
Detects this voltage for constant current
control
/The current limiter also detects this
potential and is activated.
Spindle motor coil mid-point input pin
Detects the coil voltage waveform with
reference to this voltage.
Spindle triangular wave generating
capacitor connection pin
With this triangular wave, the coil output
waveform is soft switched.
Function
LA6502
Pin voltage
0V to 5V
36
35
V CC 1
17 18 19
200Ω
Equivalent circuit
300Ω
5V
17
18
19
39
40
1 / 2 V CC -- VF
V CC 1
1kΩ
21
V CC 1
Continued on next page.
34
200Ω
200Ω
17 18 19
No.7816-9/11
V CC 1
300Ω
5V
24