Continued from preceding page
Pin number Pin name Pin voltage
17
FRC_D 0 to VCC1
LB11990W
Equivalent circuit
50kΩ
17
VCC1
Pin function
Drum motor forward/reverse
rotation select pin.
Low: forward
(–0.2V to 0.7V or open)
High: reverse
(2V to VCC1)
60
VS_D 0V to VCC2
41
VCC2 3.5V to 8.5V
22
VCC1 2.7V to 6V
13
CSLP1
14
CSLP2
27
GND
Power supply pin for determining
output amplitude by supplying
drum motor voltage.
Must be lower than VCC2 voltage.
Power supply pin for supplying
source side predriver voltage and
coil waveform detect comparator
voltage. Common for loading,
capstan, and drum motors.
VCC1
Power supply pin for circuits
except motor voltage, source
side predriver voltage, and coil
waveform detect comparator
voltage.
Common for loading, capstan,
and drum motors.
Pins for connecting triangular
wave oscillator capacitor. This
triangular wave coil output
performs waveform soft switching.
1kΩ
13 14
Ground pin for all circuits except
output.
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No. 6216-11/14