Sanyo EP93F manual LA6565, LV8280T0T

Five-Channel Driver IC for CD Players/Decks

LA6565

Overview

The LA6565 is a 5-channel driver for CD players/decks that features BTL amplifier circuits in four channels plus a single H-bridge driver circuit.

Functions and Features

■Five power amplifier circuits (bridge connection (BTL connection): 4 channels, H bridge: 1 channel)

■Iomax: 1 A

■Built-in level shifter circuits (except for the H-bridge channel)

■Built-in muting circuits (two systems) mute all outputs (This circuit operates for the BTL amplifier channels but does not affect H-bridge and the regulator circuit.)

■Built-in regulator (requires an external pnp transistor and is set with an external resistor)

■Output voltage setting function (for the loading motor channel)

■Thermal shutdown circuit

■Package: HSOP36R (375 mil)

DVD-ROM Spindleindle MotorMotor DriverDriver ICIC

LV8280T0T

Overview

The LV8280T is a sensorless motor driver IC that provides a reverse torque braking function and is appropriate as the spindle motor driver in CD-ROM/DVD players. This IC adopts a direct PWM drive technique and uses a MOSFET as the output transistor for high-efficiency motor drive.

Since this IC can implement motor drive without the use of a Hall effect device, it can be effective in supporting motor system miniaturization, thinner form factors, and reduced power consumption.

Functions and Features

■Three-phase full-wave sensorless motor driver

■Direct PWM drive (low side control)

■MOSFET output

■Synchronous commutation

■Supports switching between reverse torque braking and short-circuit braking

■Voltage controlled amplifier

■Analog input, PWM output

■FG output (Two outputs: single Hall device equivalent FG and three Hall device equivalent FG outputs)

■Current limiter circuit

■Thermal protection circuit

■Standby mode power saving circuit

■Package: TSSOP30 (275 mil)

Block Diagram

FWD

REV

VCCP2

VLO-

VLO+

VO4+

VO4-

VO3+

VO3-

VO2+

VO2-

VO1-

VO1+

VCCP1

VCCS

VIN1+

VIN1-

VIN1