TDA8586 データシートの表示（PDF） - Philips Electronics

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TDA8586

Power amplifier with load detection and auto BTL/SE selection

Philips Electronics 

Philips Semiconductors

Power amplifier with load detection and

auto BTL/SE selection

Preliminary specification

TDA8586

FEATURES

General

• Operating voltage from 8 to 18 V

• Low distortion

• Few external components, fixed gain

• Automatic mode selection (SE or BTL) depending on

connected ‘rear’ loads

• Can be used as a stereo amplifier in Bridge-Tied Load

(BTL) or quad Single-Ended (SE) amplifiers

• Single-ended mode without loudspeaker capacitor

• Soft clipping, to guarantee good clip behaviour with

inductive loads

• Mute and standby mode with one-pin operation

• Diagnostic information for Dynamic Distortion Detector

(DDD), high temperature (140 °C) mode of operation

and short-circuit

• No switch-on/off plops when switching between standby

and mute and from mute to on

• Load detection on ‘rear’ channels when switching from

standby to mute

• Fast mute on supply voltage drops (low VP mute).

GENERAL DESCRIPTION

The IC incorporates the following functions:

1. 4 × 6 W SE amplifies without SE capacitor, because of

the availability of 2 half supply voltage power buffers

2. 2 × 20 W BTL amplifiers

3. Automatic switching between 2 and 4 speaker

operation. The mode of operation is determined during

start-up.

This amplifier is protected for all general short-circuit

conditions to battery or ground, overvoltage, 45 V load

dump and short-circuits on the speaker outputs.

The IC is contained in a 20-pin power HSOP package, but

is also available in a 17-pin SIL power package. When

packaged in the 20-pin HSOP package additional

functions are available:

1. DDD level selection between 2 and 10%

2. Overrule pin for changing mode of operation

(from SE to BTL or from BTL to SE).

Protection

• 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

• Overvoltage protection.

ORDERING INFORMATION

TYPE

NUMBER

TDA8586Q

TDA8586TH

PACKAGE

NAME

DESCRIPTION

DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)

HSOP20 heatsink small outline package; 20 leads; low stand-off

VERSION

SOT243-1

SOT418-2

1999 Apr 08

2

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