LB8118M 查看數據表（PDF） - SANYO -> Panasonic

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LB8118M

Actuator Driver for Portable CD Players

SANYO -> Panasonic 

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

9

EXTDRV

14

DNB-1

15

DNB-2

17

ASPDRV

24

APCDRV

LB8118M

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 each 2-channel

control output is set by external

PWM step-down circuit.

Power supply for the actuator

driver controller, maximum value

circuit for PWM, and sled

controller.

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. (Open when there is

one H bridge power supply.)

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.

(DNB-2 becomes the drive pin

when there is one H bridge

power supply.)

Base drive output pin for the

external NPN-Tr for the step-up

circuit that sets the external

voltage for the DSP.

Base drive output pin for

external NPNTr for the laser

diode APC power supply.

Continued on next page.

No.5825-5/11

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