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

1			Thermal shutdown		Signal system			36	SGND
	Input			circuit	ground
2			(Loading motor driver output voltage setting)					35
									VCONT
				Muting
3				Controls the on/off state of				34	MUTE1
			control	the corresponding channel.
4				High: output on,		CH1		33
				low: output off		CH2,3,4			MUTE234
			Output
5				44k	11k			32
				+		-			VIN4-
							+
6			shifter	-		To VREFOUT 31
									VIN4
7			Level				-	30	VREF-IN
							+
8			shifter					29	VREF-OUT
9								28
	Power		Level	REG (VDD)			system ground		REG-OUT
	system			- IN
RF ground				+ REG				RF
			-				Power
			+	OUT
10			Level shifter				+	27	REG-OUT
							-
11							+	26	VIN+OP
12			shifter				-	25	VIN-OP
13								24
			Level						VO-OP
14				44k				23	VIN3
15	Signal system				11k			22
				-		-			VIN3-
	power supply
							+
				+		To VREFOUT
16		11k	44k					21	VIN2
	+		-
17	-		+	44k	11k			20	VIN2-
				-			-
							+
18				+				19	VIN2+

Block Diagram
VCOIN	RMIN	RMAX	VCO		COMIN	FIL	CPC1	CP1
VCC	VCO			OSC			Charge		VG
							pump
+
Phase								Waveform	COM
comparator								synthesis	VS
FG									+
BRK		Sensorless							UOUT
S/S			drive logic			Commutation
VREF						logic			VOUT
									WOUT
			TSD						RF
								-	-
									+
								+
				+					-
				-					+
			VCTL	VCREF

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