TDA7385 STMicroelectronics, TDA7385 Datasheet - Page 14

• Manufacturer Part Number: TDA7385
• Description: IC AMP AUDIO PWR 35W 25FLEXIWATT
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7385

• Output Type: 4-Channel (Quad)
• Max Output Power X Channels @ Load: 35W x 4 @ 4 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: 25-Flexiwatt (bent and staggered leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2174-5

Application hints
14/17
Pin 1, which is mechanically attached to the device’s tab, needs to be tied to the cleanest
power ground point in the pc-board, which is generally near the supply filtering capacitors.
Figure 17. Diagnostics waveforms.
Figure 18. Fault detection circuit
WAVEFORM
WAVEFORM
ST-BY PIN
VOLTAGE
MUTE PIN
VOLTAGE
OUTPUT
Vpin 25
Vs
T1 << T2
VREF ≥ VREF1 >> VREF2
TDA7385
25
D95AU304
VREF
T2
T1
VREF1
VREF2
CLIPPING
+
+
-
-
REGULATOR, FLASHING SYSTEM)
FAULT, THERMAL SHUTDOWN
SECTION, μP VOLTAGE
(TO POWER SUPPLY
CLIP DET. (TO GAIN
TONE CONTROL)
COMPRESSOR/
SHORT TO GND
D95AU305
OR TO Vs
PROXIMITY
THERMAL
TDA7385
t
t
t
t