tda8941p NXP Semiconductors, tda8941p Datasheet - Page 6

• Manufacturer Part Number: tda8941p
• Description: 1.5 W Mono Bridge Tied Load Btl Audio Amplifier
• Manufacturer: NXP Semiconductors

9. Limiting values
10. Thermal characteristics
Philips Semiconductors
9397 750 06864
Product specification
8.5.1 Short-circuit protection
8.5.2 Thermal shutdown protection
8.5 Built-in protection circuits
The TDA8941P contains two types of protection circuits, i.e. short-circuit and thermal
shutdown.
Short-circuit to ground or supply line — This is detected by a so-called ‘missing
current’ detection circuit which measures the current in the positive supply line and
the current in the ground line. A difference between both currents larger than 0.4 A,
switches the power stage to standby mode (high impedance).
Short-circuit across the load — This is detected by an absolute-current
measurement. An absolute-current larger than 2 A, switches the power stage to
standby mode (high impedance).
The junction temperature is measured by a temperature sensor; at a junction
temperature of approximately 150 C this detection circuit switches the power stage
to standby mode (high impedance).
Table 5:
In accordance with the Absolute Maximum Rating System (IEC 60134).
Table 6:
Symbol
V
V
I
T
T
P
V
Symbol
R
ORM
CC
I
stg
amb
tot
CC(sc)
th(j-a)
Limiting values
Thermal characteristics
Parameter
thermal resistance from junction to ambient
Parameter
supply voltage
input voltage
repetitive peak output current
storage temperature
operating ambient
temperature
total power dissipation
supply voltage to guarantee
short-circuit protection
Rev. 02 — 7 April 2000
Conditions
no signal
operating
non-operating
1.5 W mono BTL audio amplifier
Conditions
in free air
Min
-
-
-
0.3
0.3
0.3
55
40
© Philips Electronics N.V. 2000. All rights reserved.
TDA8941P
Max
+25
+18
V
2
+150
+85
1.25
12
CC
Value Unit
100
+ 0.3 V
Unit
V
V
A
W
V
K/W
C
C
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