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

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LB8118M

Actuator Driver for Portable CD Players

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

23

Symbol

VLD

24

VAPC

16

Voset

13

CHG-ON

28

MUTE

44

1ch/2ch

34

SLMODE

26

VCC

29

SLREF

33

IN4

39

PGND

LB8118M

Equivalent circuit

Function

Laser diode voltage detection

pin. The VLD voltage +0.5 V is

VAPC.

Voltage feedback input pin for

the APC step-up voltage circuit.

The step-up power supply

voltage is determined by

comparing this input voltage with

VLD.

To next

block

H bridge power supply limiter

voltage pin for the VOUT2 side.

The voltage is limited at

approximately 190% of the VO

SET voltage. The setting is made

by a dividing resistor.

Pin for selecting battery charging

when external voltage input is

applied. This pin is used to

determine the drop voltage for

the external voltage input. When

low, the drop voltage set by

VEXT is selected; when high,

the drop voltage set by

VEXT-CHG is selected.

Input pin for simultaneously

muting the four- channel drivers.

(Low level: mute)

This pin is used to switch the H

bridge power supply between

two-channel simultaneous

operation and one-channel

operation. (Two-channel

operation is selected when this

pin is low.)

Pin for switching the sled driver

between V-type control and step

control. (High: V-type control;

low: step control)

Power supply voltage pin.

Threshold input pin for driving

the sled motor stepwise. Both

the positive and negative step

levels (with positive-negative

symmetry) are determined by the

voltage differential between the

pin voltage and the ASPREF pin

voltage. (See Supplementary

Explanation)

Output Tr. GND for the four-

channel H bridge drivers. This

pin is not internally connected to

the small-signal system GND.

No.5825-7/11

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