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TDA7451STN/a68avai4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLY


TDA7451 ,4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLYTDA7451®4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUSTRIPLE POWER SUPPLYPRELIMINARY DATAHIGH OUTPUT ..
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TDA7451
4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS TRIPLE POWER SUPPLY
TDA7451
4x7W OR 2x22W CAR RADIO POWER AMPLIFIER PLUS
TRIPLE POWER SUPPLY
PRELIMINARY DATA

HIGH OUTPUT POWER CAPABILITY:
4 x 9.5W OR 2 x 32W/4Ω MAX
4 x 8.5W OR 2 x 28W/4Ω EIAJ
4 x 7W OR 2 x 22W/4Ω @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-
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)
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
PIN CONNECTION
TDA7451

2/9
PO = 4 X 7W S.E. APPLICATION
PO = 2 X 22W BTL APPLICATION
TDA7451

3/9
ELECTRICAL CHARACTERISTICS (Refer to the test circuit; VS = 14.4V; RL = 4Ω, Tamb = 25°C,
f = 1kHz, unless otherwise specified)
(*) 22Hz to 22KHz
TDA7451

4/9
ELECTRICAL CHARACTERISTICS (continued)
DIAGNOSTIC DIAGRAM
TDA7451

5/9
VOLTAGE SUPPLY SECTION WAVEFORMS
TDA7451

6/9
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