TFA9812HN PHILIPS [NXP Semiconductors], TFA9812HN Datasheet - Page 46

• Manufacturer Part Number: TFA9812HN
• Description: BTL stereo Class-D audio amplifier with I2S input
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
Table 55.
Unless specified otherwise, V
V
MCLK clock mode, typical application diagram
[1]
[2]
[3]
[4]
TFA9812_2
Preliminary data sheet
Symbol
Thermal Foldback (TF)
T
OverTemperature Protection (OTP)
T
OverVoltage Protection (OVP)
V
UnderVoltage Protections (UVP)
V
OverCurrent Protection (OCP)
I
Window Protection (WP)
V
OverFrequency Protection (OFP)
f
UnderFrequency Protection (OFP)
f
O(ocp)
OFP
UFP
SS1
act(th_fold)
act(th_prot)
P(ovp)
P(uvp)
o
I
Thermal foldback temperature sensor is not located at hottest spot. Hottest spot is 12 C higher.
Current limiting concept: in overcurrent condition no interruption of the audio signal in case of impedance drop.
PLL output frequency not external available.
P
= V
is the current through the analog supply voltage (V
SS2
DC characteristics
= REFD = REFA = 0 V, T
Parameter
thermal foldback
activation
temperature
thermal protection
activation
temperature
overvoltage
protection supply
voltage
undervoltage
protection supply
voltage
overcurrent
protection output
current
output voltage
Overfrequency
protection frequency
Underfrequency
protection frequency
DDA
…continued
= V
DDP
amb
Condition
UVP on V
UVP on V
high level
low level
At PLL output frequency
At PLL output frequency
= 12 V, V
= 25 C, R
(Figure
DDA
DDA(3V3)
Rev. 02 — 22 January 2009
SSP1
DDA
L
= 8 , f
13).
) pin added to the current through the power supply voltage (V
= V
SSP2
i
= 1 kHz, f
= 0 V, V
[2]
[3]
[4]
[4]
BTL stereo Class-D audio amplifier with I
Min
118
-
20
7
1.6
3.0
-
-
100
30
DDA(3V3)
s
= 44.1 kHz, f
= V
DDD(3V3)
sw
Typ
125
-
22.3
7.5
2.2
3.3
V
REFA + 1
140
45
= 400 kHz, 24-bit I
DDA
= 3.3 V,
1
Max
132
160
24
8
3.0
3.6
-
-
185
60
© NXP B.V. 2009. All rights reserved.
TFA9812
2
S input data,
DDP
) pin.
2
S input
46 of 66
Unit
V
V
V
A
V
V
MHz
MHz
C
C