LB8109M データシートの表示（PDF） - SANYO -> Panasonic
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LB8109M Datasheet PDF : 9 Pages
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Pin Functions
Pin No.
1, 2
32, 33
Symbol
IN1, IN2
IN3, IN4
30
ASPREF
43, 42
41, 40
38, 37
36, 35
OUT1+, 1–
OUT2+, 2–
OUT3+, 3–
OUT4+, 4–
3
VOUT1
31
VOUT2
4
VCD
5
CHGDRV
10
EXTDRV
15
DNB-1
16
DNB-2
17
ASPDRV
LB8109M
Equivalent circuit
to
Function
Actuator control signals for each
driver:
IN1: Focus, IN2: Tracking,
IN3: Spindle, IN4: Sled.
These signals are input from the
ASP (DSP).
Control reference signal input pin
for each driver. This signal is
input from the ASP (DSP).
Constant current
value of each
Focus coil actuator drive output
pins.
Tracking coil actuator drive
output pins.
Spindle motor drive output pins.
Sled motor drive output pins.
(Each channel includes built-in
spark killer diodes.)
Power supply pins for the H
bridge driver. VOUT1 is for the
focus/tracking group and VOUT2
is for the spindle/sled group.
Maximum value + α (α :
saturation voltage of upper/lower
output Tr) of control output for
each 2CH is set by external
PWM step-down circuit.
Power supply for the actuator
driver controller, maximum value
circuit for PWM, sled controller,
and MUTE block.
Base drive output pin for the
external NPN-Tr for the battery
pulse charging circuit.
Base drive output pin for the
external step-down NPN-Tr used
when external voltage input is
applied.
Base drive output pin for the
PNP-Tr for the step-down PWM
that generates the power supply
for the H bridge driver that drives
the focus/tracking group
actuators.
Constant-current circuit which
changes with the input of CH1
through 4. (3 mA max)
Base drive output pin for the
PNP-Tr for the step-down PWM
that generates the power supply
for the H bridge driver that drives
the spindle/sled group actuators.
Base drive output pin for the
external NPN-Tr for the step-up
circuit that sets the external
voltage for the DSP.
Continued on next page.
No.5233-5/9
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