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TDA7482

October 2004

1FEATURES

■

25W OUTPUT POWER:

RL = 8

Ω/4Ω; THD = 10%

■

HIGH EFFICIENCY

■

WIDE SUPPLY VOLTAGE RANGE (UP TO

±25V)

■

SPLIT SUPPLY

■

OVERVOLTAGEPROTECTION

■

ST-BY AND MUTE FEATURES

■

SHORT CIRCUIT PROTECTION

■

THERMAL OVERLOAD PROTECTION

2DESCRIPTION

The TDA7482 is an audio class-D amplifier as-

sembled in Multiwatt15 package specially de-

signed for high efficiency applications mainly for

TV and Home Stereo sets.

25W MONO CLASS-D AMPLIFIER

Figure 2. Test and Application Circuit.

L1 60

µH

8

Ω

+

-

+

-

PWM

PRE

9

5

C2 0.33

µF

IN1

C4 4.7nF

FEEDCAP

OUT

BOOT

C11

100nF

C12

560pF

R5

150

Ω

C14

470nF

3

1

VREG

C15

100nF

R4 12K

Ω

12

2

C10

2200

µF

C9

100nF

SGN-GND

7

MUTE

ST-BY

10

13

11

+VCC

ST-BY/

MUTE

C1

2.2

µF

R3

30K

R2

10K

C7

2200

µF

IN1

D96AU538C

-VCC

(Pin 14,15)

C6

100nF

C3

1nF

R1

10K

+5V

4

N.C.

C5 100nF

BOOTDIODE

C8

270pF

6

8

14,15

FREQ

-VCC

Rev. 4

Figure 1. Package

Table 1. Order Codes

Part Number

Package

TDA7482

Multiwatt15

Multiwatt15