TDA2003 Pinout, Equivalent, Application, Datasheet

The TDA2003 comes in a 5-pin Pentawatt package, making it easy to mount on heatsinks while supporting high-output audio performance for car radio systems, home amplifiers, and DIY speaker projects. Before getting into the detailed sections, it’s important to know the TDA2003 pinout, as correct wiring ensures safe operation and prevents short circuits in audio amplifier builds.

tda2003 datasheet pinout equivalent specification application — TDA2003 Amplifier Datasheet and Specs

Introduction

The TDA2003 is a powerful and widely used low-frequency class-AB audio amplifier IC capable of delivering up to 20W output with proper heatsinking. It supports high supply voltages up to 40V, making it a preferred choice for automotive audio systems and medium-power audio applications. Its internal protections — including short-circuit protection and thermal shutdown — make it extremely reliable for everyday amplifier designs.

tda2003 pinout datasheet equivalent specification pin configuration — tda2003 Pin Configuration Diagram Pinout

Pin Configuration of TDA2003 Power Amplifier IC

Pin#	Pin Name
1	Non-Inverting Input (+)
2	Inverting Input (-)
3	V- (Negative Supply)
4	Output
5	V+ (Positive Supply)

TDA2003 Pin Configuration Table

Note: DATASHEET DOWNLOAD button is provided end of this article.

TDA2003 Key Features

High-fidelity class-AB audio output
Low distortion performance for clean sound
Built-in short-circuit protection
Thermal shutdown safety
High stability and low noise design
Compatible with automotive and home audio systems
Works with a simple external component network

TDA2003 Specifications/Characteristics

Supply Voltage (VCC): 18V
Output Power: 20W with proper heatsink
Storage Temperature (Tstg): −40°C to +150°C
Operating Mode: Class-AB
Package: 5-Pin Pentawatt

Key Applications of TDA2003 Power Amplifier IC

Car audio power amplifiers
DIY speaker and subwoofer projects
Home audio amplifier modules
Intercom and PA system amplifiers
Multimedia speaker systems
Low-distortion mono audio amplifier circuits
Battery-powered audio systems

TDA2003 Equivalent ICs / Alternatives

(Verify each replacement with the circuit requirements)

TDA2002
TDA2030 (higher performance alternative)
TDA2040 (higher power class-AB amplifier)
LM1875 (similar audio usage)
TDA1552Q (car radio audio IC)

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Working Principle of TDA2003

The TDA2003 operates as a class-AB audio amplifier, where the internal differential input stage processes the input signal before sending it to a high-current output stage. This configuration reduces distortion while improving efficiency. The IC amplifies low-level audio input signals into high-power output capable of driving speakers directly. Built-in current limiting and thermal protections ensure stable performance even in demanding audio environments.

Frequently Asked Questions (FAQ)

Q1: What is the TDA2003 pinout?
It has a 5-pin layout: Input, Feedback, Ground, Output, and VCC.

Q2: Can TDA2003 drive an 8-ohm or 4-ohm speaker?
Yes. It can drive both, but output power increases with 4-ohm loads.

Q3: Does TDA2003 require a heatsink?
Absolutely. For safe operation and full output power, proper heatsinking is necessary.

Q4: Can TDA2003 work in a car audio system?
Yes. It was originally designed for automotive amplifiers and supports high supply voltages.

Conclusion

The TDA2003 is a robust and reliable 20W class-AB audio amplifier IC widely used in car audio systems, DIY speaker projects, and home amplifiers. Its simple pinout, high voltage capability, built-in protections, and strong output performance make it a long-standing favorite among audio hobbyists and professionals. Proper understanding of the TDA2003 pinout, correct PCB design, and good heatsinking ensure efficient and distortion-free audio performance.

Datasheet of TDA2003 Power Amplifier IC

Click the following Button below to download the datasheet of TDA2003 :

Download Datasheet

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