Sharp 28JF-76E Service Manual page 57

TDA7480L (IC501)
10W OUTPUT POWER:
R = 8Ω/4Ω; THD = 10%
L
HIGH EFFICIENCY
NO HEATSINK
SPLIT SUPPLY
OVERVOLTAGE PROTECTION
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
DESCRIPTION
The TDA7480L is an audio class-D amplifier as-
sembled in Power DIP package specially de-
signed for high efficiency applications mainly for
TV and Home Stereo sets.
Pinning
Pin Functions
N. Name
1 -V
CC
2 -V
CC
3 -V
CC
4 OUT
5 BOOTDIODE
6 BOOT
7 NC
8 FEEDCAP
9 FREQUENCY
10 SGN-GND
11 IN
12 ST-BY-MUTE
13 NC
14 +V SIGN
CC
15 VREG
16 +V POW
CC
17 -V
CC
18 -V
CC
19 -V
CC
20 -V
CC
-V 1
CC
-V 2
CC
-V 3
CC
OUT 4
BOOTDIODE 5
BOOT 6
N.C. 7
FEEDCAP 8
FREQ 9
SGN-GND 10
D96AU537B
NEGATIVE SUPPLY.
NEGATIVE SUPPLY.
NEGATIVE SUPPLY.
PWM OUTPUT
BOOTSTRAP DIODE ANODE
BOOTSTRAP CAPACITOR
NOT CONNECTED
FEEDBACK INTEGRATING CAPACITANCE
SETTING FREQUENCY RESISTOR
SIGNAL GROUND
INPUT
ST-BY/ MUTE CONTROL PIN
NOT CONNECTED
POSITIVE SIGNAL SUPPLY
10V INTERNAL REGULATOR
POSITIVE POWER SUPPLY
NEGATIVE SUPPLY (TO BE CONNECTED TO PIN 16 VIA C5)
NEGATIVE SUPPLY
NEGATIVE SUPPLY
NEGATIVE SUPPLY
PDIP20 (14+3+3)
ORDERING NUMBER: TDA7480L
20 -V
CC
19 -V
CC
18 -V
CC
17 -V
CC
16 +V
CC POW
15 VREG
14 +V
CC SIGN
13 N.C.
12 STBY/MUTE
11 IN
Function
57
28JF-76E