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0.5W to 3W BTL audio power amplifier IC

Overview:
The AN7510/7520 series is a 0.5W to 3W BTL audio power amplifier IC. Equipped with a standby function and mute or DC volume circuit, the series includes a lineup of single and dual output models. With simplified set design due to minimum external components, this IC has a wide variety of applications. Features:

Operating power sourcs voltage: 3.0V to 13.5V.Built-in standby function.Built-in mute or DC volume circuit.Circuit Diagram:

Arduino 3W Stereo Amp

This article just promote for free whis project. Original article sourse www.adafruit.com/products/1788



3.0 W mono class-D audio amplifier

General description:
     The SA58672 is a mono, filter-free class-D audio amplifier which is available in a 9 bump WLCSP (Wafer Level Chip-Size Package) and 10-terminal HVSON packages. The SA58672 features shutdown control. Improved immunity to noise and RF rectification is increased by high PSRR and differential circuit topology. Fast start-up time and very small WLCSP package makes it an ideal choice for both cellular handsets and PDAs. The SA58672 delivers 1.7 W at 5 V and 800 mW at 3.6 V into 8 Ω. It delivers 3.0 W at 5 V and 1.6 W at 3.6 V into 4 Ω. The maximum power efficiency is excellent at 90 % into 8 Ω and 84 % to 88 % into 4 Ω. The SA58672 provides thermal and short-circuit shutdown protection.
Circuit Diagram:

3 W BTL audio amplifier

General description:
The SA58631 is a one channel audio amplifier in an HVSON8 package. It provides power output of 3 W with an 8 Ω load at 9 V supply. The internal circuit is comprised of a BTL (Bridge Tied Load) amplifier with a complementary PNP-NPN output stage and standby/mute logic. The SA58631 is housed in an 8-pin HVSON package which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation.
Circuit Diagram: PCB layout:

3W MONO BRIDGE AMPLIFIER

Circuit Diagram:



2W MONO AMPLIFIER

Features

CAN DELIVER 2W THD 10% 12V/8ΩINTERNAL FIXED GAIN 32dBNO FEEDBACK CAPACITORNO BOUCHEROT CELLTHERMAL PROTECTIONAC SHORT CIRCUIT PROTECTIONSVR CAPACITOR FOR BETTER RIPPLEREJECTIONLOW TURN-ON/OFF POPSTAND-BY MODE
General Description

The device TDA7267 is a new technology Mono Audio Amplifier in MINIDIP package specifically designed for TV application. Thanks to the fully complementary output configuration the device delivers a rail to rail voltage swing without need of boostrap capacitors
Circuit Diagram:


3 W mono BTL audio output amplifier

Features:
No external componentsNo switch-on/off clicksGood overall stabilityLow power consumptionShort circuit proofESD protected on all pins.Circuit Diagram:

LM317 Amplifier Circuit

You probably know with the purpose of LM317 IC is used being an changeable voltage manager, but did you know it can take place used as an audio amplifier? This is a taste A audio amplifier built with LM317 so as to delivers a utmost 1W audio power. Manipulate a worthy heatsink pro the LM317 IC and adjust the 5K inconsistent resistor so with the aim of you allow 4.5V on 10Ω resistor (otherwise LM317 pin 2, Vout).