LB8109M 查看數據表（PDF） - SANYO -> Panasonic

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产品描述 (功能)

比赛名单

LB8109M

Actuator Driver for Portable CD Players

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

6

Symbol

CHG MON

13

EXTBASE

7

GND

8

OSC

9

OSCPWR

11

VEXT

12

VEXTCHG

18

VASP

19

UPBASE

LB8109M

Equivalent circuit

Function

Constant-current feedback input

pin for the charging circuit. The

charging current is determined

by comparing this input voltage

and the internal reference

voltage (0.35 V typ.).

Connection pin for the resistor

that is used to set the voltage for

the external step-down circuit.

This prevents invalid current at

no power supply.

GND pin for small-signal block.

(GND except output power Tr)

Input pin for the free-running

oscillation circuit that is used to

operate the PWM step-down

circuit and step-up circuit. The

oscillating frequency is

determined by external CR.

CR power supply pin that is

used to prevent invalid current

for the oscillation circuit in

standby mode.

Voltage feedback input pin for

the external power supply

step-down circuit. VCC for

playback is set by comparing

this pin voltage with the internal

reference voltage (1.28 V typ.).

Voltage feedback input pin for

the external power supply

step-down circuit. VCC for

charging is set by comparing this

pin voltage with the internal

reference voltage (1.28 V typ.).

Voltage feedback input pin for

the step-up circuit. The step-up

voltage is determined by

comparing this pin voltage with

the internal reference voltage

(1.28 V typ.).

Connection pin for the resistor

that is used to set the voltage of

the step-up circuit. This prevents

invalid current in standby mode.

Continued on next page.

No.5233-6/9

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