Product Overview
The UTC TDA7377 is a class AB car radio amplifier for car radio, it can work either in dual bridge or quad single ended configuration. The exclusive fully complementary structure of the output stage and the internally fixed gain guarantees the highest possible power performances with few external components. The on-board clip detector simplifies gain compression operation. The fault diagnostics makes it possible to detect mistakes during car radio set assembly and wiring in the car.
This blog will introduce TDA7377 systematically from its features, pinout to its equivalent, application circuits, also including product attributes and so much more.
Video: How to make audio amplifier using TDA7377 | 12V Stereo 30W
Catalog
TDA7377 Features
- High Output Power@VCC=14.4V, f=1KHz,RL=4Ω:
– 2 x 35W Max.
– 2 x 20W@THD= 10%
– 4 x 6 W @10%
– 4 x 10W / 2Ω@10%
– 2 x 30W / EIAJ@ VCC =13.7V,RL=4Ω
- CMOS Compatible Stand-by Function (Low ICC)
- No Audible pop During st-by Operations
- Internally Fixed Gain (26dB BTL and 20dB single ended)
- No Bootstrap Capacitors and boucherot Cells
- Diagnostics Facility on pin10 when output Clipping, shorted to
- Vcc or GND, thermal shutdown and soft short at turn on.
- Rail to rail output swing
- Absolute Stability Without Any External Compensation.
TDA7377 Protection Systems
- Load Dump Voltages surge
- Reversed Battery
- Output DC Short Circuit protecttion withLow current when shorted to GND or VCC.
- Output AC short circuit protection: acrossthe load
- Silent Turn On/Off
- thermal shutdown
- Load very Inductive speakers
- Fortuitous Open GND
- ESD
TDA7377 Pinouts
These are pinouts of TDA7377,If you need more pinouts please download TDA7377 datasheet.
TDA7377 Pinout
TDA 7377 Equivalent
TDA 7377 and TDA 7379 are class AB audio processor amplifiers that work either in the dual bridge, or quad single-ended configuration. TDA 7377 has an operating supply voltage of 18v as compared to the TDA 7379 which has an operating supply voltage of 20v. They are both equivalents of each other.
TDA7377 Block Diagram
These are the main block diagram of TDA7377 which are well-defined beneath.
TDA7377 Block Diagram
TDA7377 CAD Models
Followings are TDA7377 Symbol, Footprint, and 3D Model.
TDA7377 Symbol
TDA7377 Footprint
TDA7377 3D Model
TDA7377 Application Circuits
Followings are TDA7377 typical test and application circuits.
Quad Stereo
Double Bridge
Stereo/Bridge
TDA7377 Product Attributes
TYPE |
DESCRIPTION |
Category |
Integrated Circuits (ICs) Linear - Amplifiers - Audio |
Mfr |
STMicroelectronics |
Part Status |
Obsolete |
Type |
Class AB |
Output Type |
2-Channel (Stereo) or 4-Channel (Quad) |
Max Output Power x Channels @ Load |
35W x 2 @ 4Ohm; 10W x 4 @ 2Ohm |
Voltage - Supply |
8V ~ 18V |
Features |
Depop, Short-Circuit and Thermal Protection, Standby |
TDA7377 Datasheet
TDA7377 Datasheet
TDA7377 Manufacturer
STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivaled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence trends.
Using Warnings
Note: Please check their parameters and pin configuration before replacing them in your circuit.
TDA7377 FAQ
① What is the difference between TDA7377 vs TDA7297?
TDA7377 has less distortion than TDA7297. TDA7297 is a plain stereo amplifier IC while TDA7377 offers 4 channels that may in used in stereo BTL coupling. Sound-wise, TDA7377 should be best. Both are cheap.
② What kind of radio amplifier is a TDA7377?
This is one of the Power Amplifier types. The TDA7377 is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration.
③ Can a TDA7377 be replaced by a JRC4558?
Everyone works in a similar way and many are compatible. The TL072 contains two amplifiers. So it’s used in stereo preamps. It can be replaced by JRC4558, TL082 or NE5532. Each one has its characteristic sound, without demeriting one from the other.