Linear - Amplifiers - Audio 8V~18V Depop, Short-Circuit and Thermal Protection, Standby TDA7377 IC AMP CLASS AB DUAL/QUAD 35W
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Nov 1, 2021
Alfred Gaskell
TDA7377 stereo amplifier board test and review
Linear - Amplifiers - Audio 8V~18V Depop, Short-Circuit and Thermal Protection, Standby TDA7377 IC AMP CLASS AB DUAL/QUAD 35W
The TDA7377 is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration. This article is going to explain datasheet pdf, circuit, pinout, power, and other details about the TDA7377 amplifier.
TDA7377
The TDA7377 is a brand-new class AB car radio amplifier that can operate in either a DUAL BRIDGE or a QUAD SINGLE ENDED configuration. The output stage's unique fully complementary structure and internally fixed gain ensure the maximum possible power performance with a minimal component count. Gain compression is made easier with the onboard clip detector. Fault diagnostics allows for the detection of problems made during automobile radio set installation and wiring.
TDA7377 Pinout
| Pin No | Pin Name | Description |
| 1 | OUT 1 | Output 1 |
| 2 | OUT 2 | Output 2 |
| 3 | VCC | Collector Supply Voltage |
| 4 | IN 1 | Input 1 |
| 5 | IN 2 | Input 2 |
| 6 | SVR | Supply Voltage Rejection |
| 7 | ST-BY | Stand By |
| 8 | PW-GND | Power Ground |
| 9 | S-GND | Signal Ground |
| 10 | DIAG: | Diagnostics |
| 11 | IN 4 | Input 4 |
| 12 | IN 3 | Input 3 |
| 13 | VCC | Collector Supply Voltage |
| 14 | OUT 4 | Output 4 |
| 15 | OUT 3 | Output 3 |
TDA7377 Symbol
TDA7377 Footprint
STMicroelectronics TDA7377 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics TDA7377.
| Product Attribute | Attribute Value | |
|---|---|---|
| Number of Pins | 15Pins | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Type | Class AB |
| Product Attribute | Attribute Value | |
|---|---|---|
| Voltage - Supply | 8V~18V | |
| Base Part Number | TDA7377 | |
| Output Type | 2-Channel (Stereo) or 4-Channel (Quad) | |
| Operating Supply Voltage | 18V |
| Product Attribute | Attribute Value | |
|---|---|---|
| Max Output Power | 35W | |
| Max Output Power x Channels @ Load | 35W x 2 @ 4 Ω; 10W x 4 @ 2 Ω | |
| Features | Depop, Short-Circuit and Thermal Protection, Standby | |
| RoHS Status | ROHS3 Compliant |
Dimension: 60×56×50
Output power: 35W+35W
Power supply: DC 9-15V/50-100W
Channel type: 2.0 stereo
Response frequency: 20Hz-20 KHz
Matching speakers: 4-8 20-120W 3''-10'' bookshelf speaker, floor speaker
1. Connect to speakers
Connect the two wires of the speakers to the audio output port of the power amplifier, the left channel speaker is connected to the LOUT port of the amplifier and the right channel speaker is connected to the ROUT port, the positive connects to "+", the negative connects to "-".
2. Connect to sound source
Use an audio cable with an end of 3.5mm stereo headphone plug and plugin the 3.5 stereo headphone jack of the amplifier.
The other end of the audio cable is connected to the audio source (such as computers, mobile phones, MP3, DVD).
3. Connecting to the power supply
1) Connect to the adapter of the power supply
Use the power supply in which the output is above DC12V3A.
Connect the output cable of the adapter to the 12V port of the power amplifier board.
The positive connects to the "+" of the port while the negative connects to "-".
2) Connect voltage converter
Use the voltage converter in which the output is above AC12V3A.
Connect the two output cables of the converter to the 12V port of the power amplifier board.
Because the output of the converter is alternating current, it is not positive or negative.
4. Play music
Plugin the power, the blue power indicator will light up which means that the power amplifier board starts working.
You can adjust the volume knob according to their preferences.
The followings are the test and application circuits of TDA7377.
Quad Stereo
Double Bridge
Stereo/Bridge
Load Dump Voltages surge
Reversed Battery
Output DC Short Circuit protection with Low current when shorted to GND or VCC
Output AC short circuit protection: across the load
Silent Turn On/Off
Thermal shutdown
Load very inductive speakers
Fortuitous Open GND
ESD
TDA7377 Dimensions
STMicroelectronics is a globally recognized semiconductor company. They are dedicated to developing semiconductor solutions for various microelectronics applications. STMicroelectronics enjoys unrivaled silicon and system expertise, strong manufacturing strength, IP portfolio, and solid relationships with their strategic partners. Based on these advantages, STMicroelectronics has become a pioneer in System-on-Chip (SoC) technology and its products have a positive effect in realizing today's convergence trends.
Download datasheets and manufacturer documentation for TDA7377
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