TDA7481 Datasheet, PDF (1/6 Pages) STMicroelectronics – 10W MONO CLASS-D AMPLIFIER

TDA7481
18W MONO CLASS-D AMPLIFIER
18W OUTPUT POWER:
RL = 8Ω/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.
Figure 1: Test and Application Circuit.
Multiwatt15
ORDERING NUMBER: TDA7481
+5V
+VCC
R1
10K
R2
10K
R3
30K
C5 100nF
-VCC
(Pin 14,15)
N.C.
V_{CC POW}
C6
100nF
V_{CC SIGN}
C7
2200µF
ST-BY MUTE
10
4
C1 ST-BY/
13
11
2.2
MUTE
µF
3 BOOT
IN1 9
IN1
-
PRE
C2 0.33µF
C3
+
C4 4.7nF
1nF
5
FEEDCAP
C11
-
PWM
+
1
OUT
100nF _{L1 60µH}
C12
560pF _C14
8Ω
R5 _470nF
150Ω
VREG
12
SGN-GND
7
6
C15
2
100nF
8
14,15
BOOTDIODE
FREQ
-V_{CC SIGN}
-V_{CC POW}
C8
270pF
R4 12KΩ
(R_F)
-VCC
D96AU534C
C9
100nF
C10
2200µF
February 1998
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