TDA7481 STMicroelectronics, TDA7481 Datasheet

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TDA7481

Manufacturer Part Number
TDA7481
Description
IC AMP AUDIO 18W D MULTIWATT15
Manufacturer
STMicroelectronics
Type
Class Dr
Datasheet

Specifications of TDA7481

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
18W x 1 @ 4 Ohm
Voltage - Supply
±10 V ~ 25 V
Features
Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type
Through Hole
Package / Case
Multiwatt-15 (Vertical, Bent and Staggered Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
September 2003
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.
Figure 1: Test and Application Circuit.
ST-BY
18W OUTPUT POWER:
R
HIGH EFFICIENCY
WIDE SUPPLY VOLTAGE RANGE (UP TO
SPLIT SUPPLY
OVERVOLTAGE PROTECTION
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
25V)
L
= 8 /4 ; THD = 10%
IN1
MUTE
C2 0.33 F
D96AU534C
C4 4.7nF
®
10K
R2
2.2
C1
F
+5V
FEEDCAP
SGN-GND
10K
30K
1nF
R1
R3
C3
ST-BY/
270pF
MUTE
C8
IN1
10
9
5
7
6
(Pin 14,15)
N.C.
R4 12K
(R
FREQ
-VCC
4
F
)
+
C5 100nF
-
PRE
V
CC POW
13
18W MONO CLASS-D AMPLIFIER
8
-V
+VCC
CC SIGN
11
V
CC SIGN
100nF
PWM
+
C9
100nF
-
C6
14,15
-V
CC POW
ORDERING NUMBER: TDA7481
12
-VCC
3
1
2
BOOT
OUT
VREG
BOOTDIODE
2200 F
2200 F
Multiwatt15
C10
C7
100nF
560pF
150
C11
C12
R5
TDA7481
L1 60 H
470nF
100nF
C14
C15
8
1/6

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TDA7481 Summary of contents

Page 1

... 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. Figure 1: Test and Application Circuit. +5V ...

Page 2

... TDA7481 ABSOLUTE MAXIMUM RATINGS Symbol V DC Supply Voltage CC P Power Dissipation T tot Storage and Junction Temperature stg j V Maximum Voltage Across RF (pin 6) FREQ T Operating Temperature Range op ESD Max ESD On Pins PIN CONNECTION (Top view) THERMAL DATA Symbol R Thermal Resistance Junction-case th j-case PIN FUNCTIONS N ...

Page 3

... MUTE & STAND-BY FUNCTIONS TURNS: 28 1mm = 18V 25°‘C unless otherwise specified.) amb Min. Typ –70 - 12K 3 12K 85 f 0.1 3.5 5 150 0.4 100 100 120 9 1.4x10 itself F TDA7481 Max. Unit ° 200 KHz 140 KHz 0 3/6 ...

Page 4

... TDA7481 Figure 2: Recommended P.C. Board and Component Layout of the Circuit of Figure 1 (1.25:1 scale) Note: Capacitor C5 must be as close as possible to device’s pins 16 and 17 4/6 ...

Page 5

... TYP. MAX. MECHANICAL DATA 0.197 0.104 0.063 0.039 0.022 0.030 0.050 0.060 0.700 0.710 0.795 0.874 0.886 0.87 0.886 0.713 0.689 0.699 0.421 0.429 0.114 0.179 0.191 0.200 0.214 0.102 Multiwatt15 (Vertical) 0.102 0.152 TDA7481 OUTLINE AND 0016036 J 5/6 ...

Page 6

... TDA7481 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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