TFA9810T NXP Semiconductors, TFA9810T Datasheet - Page 19

• Manufacturer Part Number: TFA9810T
• Description: Audio Amplifiers 2X15W BTL POWER COMPARATOR
• Manufacturer: NXP Semiconductors

Specifications of TFA9810T

• Product: Class-D
• Output Power: 15 W
• Available Set Gain: 19.7 dB
• Thd Plus Noise: 0.04 %
• Operating Supply Voltage: 12 V
• Maximum Power Dissipation: 2500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 8 Ohms
• Input Bias Current (max): 1 uA
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 20 V
• Supply Voltage (min): 8 V
• Output Type: 2-Channel Stereo
• Package / Case: SOIC-32
• Operational Class: Class-D
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 15x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.04@8Ohm@1W%
• Single Supply Voltage (typ): 12V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 2.5W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 8V
• Single Supply Voltage (max): 20V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: SO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TFA9810T/N1,112

NXP Semiconductors
TFA9810_3
Product data sheet
14.2 Output current limiting
The peak output current is internally limited above a level of 3 A minimum. During normal
operation the output current should not exceed this threshold level of 3 A, otherwise the
output signal will be distorted. The peak output current in BTL can be estimated using
Equation
Where:
I
O
Fig 26. BTL output power as function of supply voltage: THD = 0.5 %. 3 A
Fig 27. BTL output power as function of supply voltage: THD = 10 %. 3 A
•
max
V
P
(W)
P
(W)
= supply voltage (V
P
o
o
----------------------------------------------------- -
R
25
20
15
10
(1) R
(2) R
(3) R
30
20
10
(1) R
(2) R
(3) R
3:
5
0
0
L
8
8
+
L
L
L
L
L
L
2
= 8
= 4
= 6
= 4
= 6
= 8
V
R
P
DSon
Rev. 03 — 20 February 2008
+
R
DDPx
s
3 A
12
12
V
(1)
(1)
SSPx
) [V].
(2)
16
16
(2)
Audio amplifier 2 x 12 W
V
V
P
P
(V)
(V)
010aaa019
010aaa020
© NXP B.V. 2008. All rights reserved.
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