Sharp 32JF-76E, Service Manual

Page: 58 / 88

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N. Name Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
-V
CC
-V
CC
-V
CC
OUT
BOOTDIODE
BOOT
NC
FEEDCAP
FREQUENCY
SGN-GND
IN
ST-BY-MUTE
NC
+V
CC
SIGN
VREG
+V
CC
POW
-V
CC
-V
CC
-V
CC
-V
CC
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
2-6'S_:.*T13Q:!W
<FEEFEL
<FE*%JEC?F@EK
10W OUTPUT POWER:
R
L
= 8
Ω
/4
Ω
; THD = 10%
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.
ORDERING NUMBER: TDA7480L
PDIP20 (14+3+3)
-V
CC
OUT
BOOTDIODE
N.C.
BOOT
FEEDCAP
FREQ
1
3
2
4
5
6
7
8
9 STBY/MUTE
N.C.
+V
CC SIGN
+V
CC POW
VREG
-V
CC
-V
CC
20
19
18
17
16
14
15
13
12
D96AU537B
SGN-GND 10 IN 11
-V
CC
-V
CC
-V
CC
-V
CC