TDA8586 Datasheet, PDF (9/24 Pages) NXP Semiconductors – Power amplifier with load detection and auto BTL/SE selection

Philips Semiconductors
Power amplifier with load detection and
auto BTL/SE selection
Preliminary specification
TDA8586
handbook, full pagewidth
state
condition
standby
mute
load detect
mute
no load detect
on
no clipping/shorts
on
clipping
on
short-circuit
VP
VP
0
9V
MSO
3V
0
5V
diagnostic
information
0
10 V
diagnostic
overrule
0
5V
mode select
0
amplifier
output ^0.5VP
0
0.5VP
buffer/amplifier
output
0
minimum 1 s
SE detection
BTL detection
BTL detected
SE detected
The mode is overruled only from
BTL to SE when the diagnostic pin
is excited with a pulse of 10 V.
This voltage must remain present.
Whatever the load detection has found the mode of operation will be inverted.
Toggling between the 2 modes is possible.
short-circuit to supply
short-circuit over load
short-circuit to ground
short-circuit to supply
short-circuit over load
short-circuit to ground
MGR027
1999 Apr 08
Fig.5 Timing diagram including diagnostics.
9