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TDA8580 Datasheet(PDF) 6 Page - NXP Semiconductors

No. de pieza TDA8580
Descripción Electrónicos  Multi-purpose power amplifier
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA8580 Datasheet(HTML) 6 Page - NXP Semiconductors

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1998 Feb 25
6
Philips Semiconductors
Preliminary specification
Multi-purpose power amplifier
TDA8580
FUNCTIONAL DESCRIPTION
The TDA8580 is a multi-purpose power amplifier with four
amplifiers which can be connected in the following
configurations with high output power and low distortion (at
minimum quiescent current);
• Dual bridge-tied load (BTL) amplifiers
• Quad single-ended amplifiers
• Dual single-ended amplifiers and one bridge-tied load
amplifier.
The amplifier can be switched on (play or ‘mute’) and off
(‘standby’) by the MUTE and STANDBY pins (for
interfacing directly with a microcontroller). One-pin
operation is also possible by applying a voltage greater
than 8 V to the ‘standby’/’mute’/’on’ selection pin (pin 5) to
switch the amplifier in ‘on’ mode.
Special attention is given to the dynamic behaviour as
follows:
• Noise suppression during engine start.
• No plops when switching from ‘standby’ to ‘on’.
• Slow offset change between ‘mute’ and ‘on’ (controlled
by MUTE and STANDBY pins).
• Low noise levels, which are independent of the supply
voltage.
Protections are included to avoid the IC being damaged at:
• Over temperature: T > 150 °C.
• Short-circuit of the output pin(s) to ground or supply rail.
When short-circuited, the power dissipation is limited.
• A missing-current limiter which limits the maximum short
circuit output current to PGND or VP pins to 1 A.
The dissipation and speaker current will be minimized
because the short-circuited amplifier is switched off. The
chip temperature is limited by the temperature
protection.
• ESD protection (Human Body Model 3000 V, Machine
Model 300 V).
• Energy handling. A DC voltage of 6 V can be connected
to the output of any amplifier while the supply pins are
short-circuited to ground. No high DC current will flow
from the supply pins of the amplifier.
Diagnostics are available for the following conditions
(see Figs 4 to 7).
• Amplifier in ‘mute’
• Chip temperature greater than 145 °C
• Distortion over 2% due to clipping
• Short-circuit protection active.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
Note
1. The maximum supply voltage under short circuit conditions is 28 V with an additional resistor in the supply line of
tbf
Ω.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VP
supply voltage
operating
8
28
V
load dump protected;
see Fig.3
45
V
VDIAG
voltage on diagnostic pin
18
V
IOSM
non-repetitive peak output current
6A
IORM
repetitive peak output current
4.5
A
Vrev
reverse polarity voltage
6V
Vsc
AC and DC short-circuit voltage of output
pins across loads and to ground or supply
pins
no external series
resistor in supply line;
note 1
24
V
Ptot
total power dissipation
75
W
Tj
junction temperature
150
°C
Tstg
storage temperature
−55
+150
°C
Tamb
operating ambient temperature
−40
+150
°C


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