4 x 50 Watt power amplifier and multiple voltage regulator

FEATURES

• I2C-bus control
• Can drive a 2 Ω load with a battery voltage of up to 16 V and a 4 Ω load with a battery voltage of up to 18 V
• DC load detection, open, short and present
• AC load (tweeter) detection
• Programmable clip detect; 1 % or 4 %
• Programmable thermal protection pre-warning
• Independent short-circuit protection per channel
• Low gain line driver mode (20 dB)
• Loss-of-ground and open VP safe
• All outputs protected from short-circuit to ground, to VP or across the load
• All pins protected from short-circuit to ground
• Soft thermal-clipping to prevent audio holes
• Low battery detection.
• Voltage regulators

PROTECTION

• If connection to the battery voltage is reversed, all regulator voltages will be zero
• Able to withstand voltages at the output of up to 18 V (supply line may be short-circuited)
• Thermal protection to avoid thermal breakdown
• Load-dump protection
• Regulator outputs protected from DC short-circuit to ground or to supply voltage
• All regulators protected by foldback current limiting
• Power switches protected from loss-of-ground.

APPLICATIONS

• Boost amplifier and voltage regulator for car radios and CD/MD players.

GENERAL DESCRIPTION

Amplifiers The TDA8588 has a complementary quad audio power amplifier that uses BCDMOS technology. It contains four amplifiers configured in Bridge Tied Load (BTL) to drive speakers for front and rear left and right channels. The I2C-bus allows diagnostic information of each amplifier and its speaker to be read separately. Both front and both rear channel amplifiers can be configured independently in line driver mode with a gain of 20 dB (differential output).

Voltage regulators

• The TDA8588 has a multiple output voltage regulator with two power switches. The voltage regulator contains the following:
• Four switchable regulators and one permanently active regulator (microcontroller supply)
• Two power switches with loss-of-ground protection
• A reset output that can be used to communicate with a microcontroller.
• The quiescent current has a very low level of 150 µA with only regulator 2 active.

Circuit Diagram:

Application circuit 4 x 50 Watt power amplifier and multiple voltage regulator

Bottom of printed-circuit board layout of test and application circuit showing components viewed from

bottom

Bottom of printed-circuit board layout of test and application circuit showing copper layer viewed from top

Top of printed-circuit board layout of test and application circuit showing components viewed from top

Bottom of printed-circuit board layout of test and application circuit showing copper layer viewed from top

4 x 6W Power amplifier with load detection and auto BTL/SE selection

Circuit Diagram:

Power amplifier with load detection and auto BTL/SE selection

Multi-purpose high-gain power amplifier

Features

• High gain
• Operating voltage from 8 to 28 V
• Low distortion
• Few external components, fixed gain
• High output power
• Can be used as a stereo amplifier in bridge-tied load (BTL) or quad single-ended (SE) amplifiers
• Single-ended mode without loudspeaker capacitor
• Mute and standby mode with one- or two-pin operation
• Diagnostic information for Dynamic Distortion Detector (DDD), high temperature (145 °C) and short-circuit
• No switch on/off plops when switching between ‘standby’ to ‘mute’ and from ‘mute’ to ‘on’
• Low offset variation at outputs between ‘mute’ and ‘on’
• Fast mute on supply voltage drops.
• Reverse polarity safe (with protection diode added)
• Short-circuit proof to ground, positive supply voltage on all pins and across load
• ESD protected on all pins
• Thermal protection against temperatures exceeding 150 °C
• Load dump protection
• Protected against open-circuit ground pins and output short-circuited to supply ground.

General Description

The TDA8581 is a stereo bridge-tied load (BTL) or a quad single-ended amplifier that operates over a wide supply voltage range from 8 to 28 V. This makes it suitable for many applications, such as car radios, television and home-sound systems. Because of an internal voltage buffer, this device can be used without a capacitor connected in series with the load (SE application). A combined BTL and 2 × SE application can also be configured.

Circuit Diagram

Multi-purpose high-gain power amplifier

TDA8580 Multi-purpose power amplifier 4 x 20 W

FEATURES

• Operating voltage from 8 to 28 V
• Low distortion
• Few external components, fixed gain
• High output power
• Can be used as a stereo amplifier in bridge-tied load (BTL) or quad single-ended (SE) amplifiers
• Single-ended mode without loudspeaker capacitor
• Mute and standby mode with one- or two-pin operation
• Diagnostic information for Dynamic Distortion Detector (DDD), high temperature (145 °C) and short-circuit
• No switch on/off plops when switching between‘standby’ to ‘mute’ and from ‘mute’ to ‘on’
• Low offset variation at outputs between ‘mute’ and ‘on’
• Fast mute on supply voltage drops.

Protection

• Reverse polarity safe
• Short-circuit proof to ground, positive supply voltage on all pins and across load
• ESD protected on all pins
• Thermal protection against temperatures exceeding 150 °C
• Load dump protection
• Protected against open-circuit ground pins and output short-circuited to supply ground.

GENERAL DESCRIPTION

The TDA8580 is a stereo bridge-tied load (BTL) or a quad single-ended amplifier that operates over a wide supply voltage range from 8 to 28 V. This makes it suitable formany applications, such as car radios, television and home-sound systems. Because of an internal voltage buffer, this device can be used without a capacitor connected in series with the load (SE application). A combined BTL and 2 × SE application can also be configured.

Circuit Diagram

Stereo bridge-tied load application

Quad single-ended application

Dual single-ended and one bridge-tied load application

4 × 40 W BTL quad car radio power amplifier

FEATURES:

Requires very few external components

High output power

Low output offset voltage

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature pre-warning)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

Short-circuit safe to ground and to VP and across the load

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

Pin compatible with the TDA8568Q, except for the gain.

GENERAL DESCRIPTION:

The TDA8571J is a integrated class-B output amplifier contained in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in a BTL configuration, each with a gain of 34 dB. The output power is 4 × 40 W (EIAJ) into a 4 Ω load.

APPLICATIONS:

Primarily developed for car radio applications

Circuit Diagram:

4 × 40 W BTL quad car radio power amplifier

2 × 40 W/2 Ω stereo BTL car radio power amplifier

General description:

The TDA8566 is an integrated class-B output amplifier which is available in several packages. TDA8566TH is contained in a 20-lead small outline plastic package. The TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the I2C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pinDIL-bent-SIL package. The device contains 2 amplifiers in a Bridge-Tied Load (BTL) configuration. The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and 2 diagnostic outputs. The device is primarily developed for car radio applications.

Features:

Differential inputs

Very high Common Mode Rejection Ratio (CMRR)

High common mode input signal handling

Requires very few external components

High output power

4 Ω and 2 Ω load driving capability

Low offset voltage at output

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature pre-warning)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

Short-circuit proof to ground, to VP and across the load

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Protected against electrostatic discharge

No switch-on/switch-off plops

Low thermal resistance

TDA8566TH1 is pin compatible with TDA1566TH

Circuit Diagram:

2 × 40 W/2 Ω stereo BTL car radio power amplifier 

4 x 12 W power amplifier with dynamic distortion detector and diagnostic interface

FEATURES
Requires very few external components
High output power
Fixed gain
Diagnostic facility (distortion, short-circuit and temperature detection)
Good ripple rejection
Mode select switch (operating, mute and stand-by)
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.

GENERAL DESCRIPTION

The TDA8562Q is an integrated class-B output amplifier in a 17-lead single-in-line (SIL) power package. It contains 4 × 12 W single-ended amplifiers.

Circuit Diagram

4 x 12 W power amplifier with dynamic distortion detector and diagnostic interface