TDA7481 datasheet(1/6 Pages) STMICROELECTRONICS

Part #	TDA7481

Description	10W MONO CLASS-D AMPLIFIER

PDF	6 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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TDA7481

18W MONO CLASS-D AMPLIFIER

18W OUTPUT POWER:

RL = 8

Ω/4Ω; THD = 10%

HIGH EFFICIENCY

WIDE SUPPLY VOLTAGE RANGE (UP TO

±25V)

SPLIT SUPPLY

OVERVOLTAGE PROTECTION

ST-BY AND MUTE FEATURES

SHORT CIRCUIT PROTECTION

THERMAL OVERLOAD PROTECTION

DESCRIPTION

The TDA7481 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.

February 1998

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

VCC SIGN

C7

2200

µF

IN1

D96AU534C

C6

100nF

C3

1nF

R1

10K

+5V

VCC POW

4

N.C.

C5 100nF

BOOTDIODE

6

8

14,15

-VCC SIGN

FREQ

-VCC POW

-VCC

(Pin 14,15)

C8

270pF

(RF)

Figure 1: Test and Application Circuit.

ORDERING NUMBER: TDA7481

Multiwatt15

1/6

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