鈩?/div>
@14.4V, 1KHz; 10%
MINIMIZED EXTERNAL COUNT
- NO NEED OF DECOUPLING CAPACITORS
- NO NEED OF BOOTSTRAP CAPACITOR
- NO NEED OF EXTERNAL COMPENSATION
- INTERNALLY FIXED GAIN (20dB)
POP-FREE AUDIO SECTION
ST-BY FUNCTION (C-MOS)
MUTE FUNCTION (C-MOS)
CLIP DETECTOR, THERMAL WARNING,
SHORT CIRCUIT DETECTION
BUILT-IN VOLTAGE REGULATORS:
- 5V @ 150mA WITH RESET
- 5V @ 500mA WITH ST-BY
- 8.5V @ 200mA WITH ST-BY
REGULATORS DIAGNOSTIC FEATURE: UN-
DERVOLTAGE, 8.5V DROP SENSE, SHORT
CIRCUIT, LOAD DUMP, OVER-TEMPERA-
BLOCK DIAGRAM
Flexiwatt25
ORDERING NUMBER:
TDA7451
TURE
PROTECTIONS
General:
LOAD DUMP
OVERRATING CHIP TEMPERATURE
Audio Section:
OUT SHORT (TO GND, TO Vs
AND
ACROSS THE LOAD)
Power Supply Section:
SHORT CIRCUIT PROTECTION (OUT TO
GND)
IN RR IN RF
10K鈩?/div>
MUTE
10碌F
10K鈩?/div>
ST-BY
1碌F
8.5V
10碌F
5V
10碌F
5V
22K
10碌F
22K
9
1
7
SVR
DIAG
19
18,24
S-GND
-
PW-GND
+
V
O1
4
150mA
REG.
V
O2
3
500mA
REG.
hvcc
-
V
O3
2
200mA
REG.
21
-
RR
25
HVCC
LF
+
17
+
TAB
LR
DIAG
-
16
DDL
0.1碌F
IN LF IN LR
0.1碌F
D95AU311C
0.1碌F
0.1碌F
V
CC1
V
CC2
6
+
20
23
+
RF
-
0.1碌F
V
CC
1000碌F
8
22
12
11
+
-
RESET
10
STCAP
470碌F
5
15
14
13
47碌F
October 1999
1/9
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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