Philips TDA8586

2001 Jul 23 2

Philips Semiconductors Preliminary speciﬁcation

Power ampliﬁer with load detection and

auto BTL/SE selection 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) operation mode 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).

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.

GENERAL DESCRIPTION

The device incorporates the following functions:

•4×6 W SE amplifies without SE capacitor, because of

the availability of 2 half supply voltage power buffers

•2×20 W BTL amplifiers

•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 device 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:

•DDD level selection between 2 and 10%

•Overrule pin for changing mode of operation

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

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8586Q DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1

TDA8586TH HSOP20 heatsink small outline package; 20 leads; low stand-off SOT418-2