TDA8580J Datasheet, PDF (6/28 Pages) NXP Semiconductors – Multi-purpose power amplifier

Philips Semiconductors
Multi-purpose power amplifier
Preliminary specification
TDA8580J
FUNCTIONAL DESCRIPTION
The TDA8580J 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 amplifiers
• Quad single-ended amplifiers
• Dual single-ended amplifiers and one bridge-tied load
amplifier.
The amplifier can be switched in on, 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 pin to switch the amplifier in on mode.
Special attention is given to the dynamic behaviour as
follows:
• 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_j > 150 °C
• Short-circuit of the output pin(s) to ground or supply rail;
when short-circuited, the power dissipation is limited
• 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.
Diagnostics are available for the following conditions
(see Figs 3, 4 and 5):
• Chip temperature above 145 °C
• Distortion over 2% due to clipping
• Short-circuit protection active.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
V_P
V_DIAG
I_OSM
I_ORM
V_P(scol)
V_P(scg)
V_P(scs)
V_P(rp)
P_tot
T_j
T_stg
T_amb
PARAMETER
CONDITIONS
supply voltage
operating
no signal condition
voltage on pin DIAG
non-repetitive peak output current
repetitive peak output current
supply voltage with short-circuit across load
supply voltage with short-circuit from output
to ground
supply voltage with short-circuit from output
to supply
reverse polarity
total power dissipation
junction temperature
storage temperature
ambient temperature
MIN.
−
−
−
−
−
−
−
MAX. UNIT
24
V
28
V
18
V
6
A
4.5 A
28
V
26
V
−
16
V
−
6
V
−
75
W
−
150 °C
−55 +150 °C
−40 +85 °C
THERMAL CHARACTERISTICS
SYMBOL
R_th(j-a)
R_th(j-c)
PARAMETER
thermal resistance from junction to ambient
thermal resistance from junction to case
CONDITIONS
in free air
VALUE
40
1.5
UNIT
K/W
K/W
2000 Apr 18
6