LB8107M データシートの表示（PDF） - SANYO -> Panasonic

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LB8107M

Portable CD Player Actuator Driver

SANYO -> Panasonic 

Ordering number : EN4851

Monolithic Digital IC

LB8107M

Portable CD Player Actuator Driver

Overview

The LB8107M is a portable CD player mechanism

actuator driver. It operates on a 2.4 V power supply, which

corresponds to two rechargeable Ni-Cd cells.

Functions and Features

• Four H bridge driver channels on chip, one each for the

four CD actuators; focus coil, tracking coil, spindle

motor and sled motor

• Built-in step-up circuit to power the associated 5.0 V

CD LSIs, including the DSP and microprocessor.

(The drive transistor, L, Di and C are external

components: step-up circuit) Io 150 mA, maximum

• Extremely low loss drive can be achieved, since the

LB8107M detects the largest signal of the four drive

channels and supplies that voltage to the H bridge driver

blocks in each of the four channels using PWM voltage

conversion.

(The drive PNP transistor, L, Di and C are external

components: step-down circuit)

• System start and stop can be performed at the

microprocessor output.

• Support for switching between step drive mode, which

has a high current reduction effect, and normal V control

for the sled motor drive (The other three channels all are

V type drive only.)

• Built-in battery check comparator

• Built-in integrating amplifier to handle the application of

digital servo control to earlier spindle motors

(This function integrates the PWM output.)

• A defect function is provided. This function improves

the tracking ability by setting the voltage supplied to the

H bridge drivers to the maximum in the presence of disk

defects during playback.

Package Dimensions

unit: mm

3148-QFP44MA

[LB8107M]

SANYO: QIP44MA

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter

Maximum supply voltage

H bridge output current

Step-up circuit output current

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

VCC max

IOUT

ICD

Pd max

Topr

Tstg

Conditions

Taking 400 mA/channel as the maximum.

Ratings

Unit

7.0

V

800

mA

150

mA

800

mW

–25 to +75

°C

–40 to +125

°C

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

82294TH (OT) A8-9896 No. 4851-1/10

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