24 W BTL or 2 x 12 W stereo car radio power amplifier

General Description:

The TDA1515BQ is a monolithic integrated class-B output amplifier in a 13-lead single in-line (SIL) plastic power package. The device is primarily developed for car radio applications, and also to drive low-impedance loads (down to 1,6 Ω). At a supply voltage VP = 14,4 V, an output power of 24 W can be delivered into a 4 Ω BTL (Bridge Tied Load), or, when used as stereo amplifier, it delivers 2 × 12 W into 2 Ω or 2 × 7 W into 4 Ω. 

Features:

• flexibility in use − mono BTL as well as stereo
• high output power
• low offset voltage at the output (important for BTL)
• large usable gain variation
• very good ripple rejection
• internal limited bandwidth for high frequencies
• low stand-by current possibility (typ. 1 µA), to simplify required switches; TTL drive possible
• low number and small sized external components
• high reliability.
• he following currently required protections are incorporated in the circuit. These protections also have positive influence
• on reliability in the applications.
• load dump protection
• a.c. and d.c. short-circuit safe to ground up to VP = 18 V
• thermal protection
• speaker protection in bridge configuration
• SOAR protection
• outputs short-circuit safe to ground in BTL
• reverse polarity safe.

Circuit Diagram:

Circuit diagram for 24 W BTL or 2 x 12 W stereo car radio power amplifier

Datasheet for TDA1515BQ

Dual BTL 20W Audio Power Amplifier

Description:
The AN7177 is a monolithic integrated circuit designed for  Dual BTL audio power amplifier suitable for Hi-Fi and car stereo. 
Features:

•  High output power (20W x 2) 
•  Incorporating stand-by circuits 
•  Low shock noise from power ON/OFF switching 
•  Fewer external components 
•  Incorporates protection circuits 
•  Highly stable operation

Circuit Diagram:

Dual BTL 20W Audio Power Amplifier 

Datasheet for AN7177: Download

6 W mono Bridge Tied Load

General Description:

The TDA8943SF is a single-channel audio power amplifier with an output power of 6 W at an 8 Ω load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL) amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products.

Circuit diagram:

6 W mono Bridge Tied Load

Datasheet for TDA8943: Download

TDA8542 2 × 1 W BTL audio amplifier

General Description:

The TDA8542(T) is a two channel audio power amplifier for an output power of 2 × 1 W with an 8 Ω load at a 5 V supply. The circuit contains two BTL amplifiers with a complementary PNP-NPN output stage and standby/mute logic. The TDA8542T comes in a 16 pin SO package and the TDA8542 in a 16 pin DIP package.

Circuit Diagram:

Circuit diagram for TDA8542 2 × 1 W BTL audio amplifier

2 x 24 W BTL or 4 x 12 W single-ended car amplifier

FEATURES:

Requires very few external components

High output power

Flexibility in use - Quad single-ended or stereo BTL

Low output offset voltage

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature detection)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

AC and DC short-circuit safe to ground and to VP

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Electrostatic discharge protection

No switch-on/switch-off plop

Flexible leads

Low thermal resistance

Identical inputs (inverting and non-inverting).

GENERAL DESCRIPTION:

The TDA8564Q is an integrated class-B output amplifier in a 17-lead DIL-bent-SIL power package. It contains 4 × 12 W single-ended or 2 × 24 W bridge amplifiers.

Circuit Diagram:

Circuit diagram for 2 x 24 W BTL

Circuit diagram for 4 x 12 W TDA8564Q

30W BTL × 2ch Audio Power Amplifier

General Description:

The thermal resistance θj−T of TA8220H package designed for low thermal resistance, has high efficiency of heat radiation. The temperature rise of chip can be reduced, and the influence from the degradation of the features due to the temperature rise at the high output can also be reduced. This stereo audio power IC, designed for car audio use, has two  built−in channels to reduce the characteristic difference between L and R channels. It also contains output short detection circuit, output clip detection and various kind of protection. 

Features:

• Low thermal resistance: θj−T = 1.5°C / W (infinite heat sink) 
• High power: POUT (1) = 30W (typ.) / channel 
• (VCC = 14.4V, f = 1kHz, THD = 10%, RL = 2Ω) 
• : POUT (2) = 26W (typ.) / channel 
• (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 2Ω) 
• : POUT (3) = 19W (typ.) / channel 
• (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 4Ω) 
• Low distortion ratio: THD = 0.04% (typ.) 
• (VCC = 13.2V, f = 1kHz, POUT = 1W, RL = 4Ω, GV = 50dB) 
• Low noise: VNO = 0.30mVrms (typ.) 
• (VCC = 13.2V, RL = 4Ω, GV = 50dB, Rg = 0Ω, BW = 20Hz~20kHz) 
• Built−in stand−by function (with (4)pin set at low, power is turned off.): ISB = 1µA (typ.) 
• Built−in output short detection circuit ((9)pin: Open collector) 
• Built−in output clip detection circuit ((1)pin: Open collector) 
• Built−in various protection circuits 
• Protection circuits: Thermal shut down, Over voltage, Out→VCC short, Out→GND short and Out−Out short. 
• Operating supply voltage: VCC = 9~18V 

Circuit Diagram:

30W BTL × 2ch Audio Power Amplifier

2-Channel 30W BTL Audio Amplifier

Circuit diagram for 2-Channel 30W BTL Audio Amplifier

layout 2-Channel 30W BTL Audio Amplifier

2-channel 13.5 W BTL Audio Power Amplifier

2-channel 13.5 W BTL Audio Power Amplifier

20 Watt BTL Audio Amplifier

20 Watt BTL Audio Amplifier

2x2.2 W BTL audio amplifier

General description:

The SA58632 is a two-channel audio amplifier in an HVQFN20 package. It provides  power output of 2.2 W per channel with an 8 Ω load at 9 V supply. The internal circuit is  comprised of two BTL (Bridge-Tied Load) amplifiers with a complementary PNP-NPN  output stage and standby/mute logic. The SA58632 is housed in a 20-pin HVQFN  package, which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation.

Circuit Diagram:

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:

3 W BTL audio amplifier

PCB layout:

Pcb layout 3 W BTL audio amplifier

15 W mono Bridge Tied Load (BTL) audio amplifier

General description

The TDA8945S is a single-channel audio power amplifier with an output power of 15 W at an 8 Ω load and an 18 V supply. The circuit contains a Bridge Tied Load (BTL) amplifier with an all-NPN output stage and standby/mute logic. The TDA8945S comes in a 9-lead single in-line (SIL) power package. The TDA8945S is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products.

Features

Few external components

Fixed gain

Standby and mute mode

No on/off switching plops

Low standby current

High supply voltage ripple rejection

Outputs short-circuit protected to ground, supply and across the load

Thermally protected

Printed-circuit board compatible.

Applications

Mains fed applications (e.g. TV sound)

PC audio

Portable audio.

Circuit Diagram

15 W mono Bridge Tied Load (BTL) audio amplifier cicuit diagram

Layout and pcb:

15 W mono Bridge Tied Load (BTL) audio amplifier pcb layout