Sanyo EP93F manual LA6548ND, LA6548NHNH

Four-Channel Driver IC for CD Players/Decks

LA6548ND

Overview

The LA6548ND is a 4-channel driver for CD players/decks that features BTL amplifier circuits in all four channels.

Functions and Features

■Four power amplifier (BTL connection) circuits

■Iomax: 0.7 A

■Built-in level shifter circuits

■Built-in muting circuit mutes all outputs (This circuit operates for the BTL amplifier channels but does not affect the regulator circuit.)

■Built-in regulator (3.3 V output, requires an external pnp transistor)

■Thermal shutdown circuit

■Package: DIP30SDLF (400 mil)

Block Diagram

VCC1	1						30	VCC2
	2					-	29
MUTE			Muting (output on/off)		15.4k	+		VREF
		11k	15.4k			11k
VIN1	3		-		-		28	VIN4
			+		+
VG1	4						27	VG4
VO1+	5		Level shifter	Level shifter			26	VO4+
VO1-	6						25	VO4-
GND	7						24	GND
GND	8		-				23	GND
			+
GND	9						22	GND
VO2-	10		Level shifter	Level shifter			21	VO3-
VO2+	11						20	VO3+
VG2	12		15.4k		15.4k		19	VIN3G
		11k				11k
VIN2	13		-		-		18	VIN3
			+		+
REG-C	14	Collector connection for the					17	CD
		external pnp transistor			RESET
REG-B	15		3.3V REG				16	RESET
		Base connection for the
		external pnp transistor

Four-ChannellDriverDriver ICIC forfor CDCD Players/DecksPlayers/Decks

LA6548NHNH

Overview

The LA6548NH is a 4-channel driver for CD players/decks that features BTL amplifier circuits in all four channels.

Functions and Features

■Four power amplifier (BTL connection) circuits

■Iomax: 0.7 A

■Built-in level shifter circuits

■Built-in muting circuit mutes all outputs (This circuit operates for the BTL amplifier channels but does not affect the regulator circuit.)

■Built-in regulator (3.3 V output, requires an external pnp transistor)

■Thermal shutdown circuit

■Package: HSOP28H (375 mil)

Block Diagram

VCC1	1					28	VCC2
	2				-	27
MUTE		Muting (output on/off)			+		VREF
		11k	15.4k		15.4k
					11k
VIN1	3					26	VIN4
			-		-
			+		+
VG1	4					25	VG4
VO1+	5		Level shifter	Level shifter		24	VO4+
VO1-	6					23	VO4-
( NC )	7					22	( NC )
	FR	GND	-		GND	FR
			+
( NC )	8					21	( NC )
VO2-	9		Level shifter	Level shifter		20	VO3-
VO2+	10					19	VO3+
VG2	11		15.4k		15.4k	18	VG3
		11k
	12		-		11k	17
VIN2					-		VIN3
			+		+
REG-C	13	Collector connection for the				16	CD
		external pnp transistor			RESET
REG-B	14		3.3V REG			15	RESET
		Base connection for the
		external pnp transistor

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