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TK2350 Datasheet(HTML) 4 Page - Tripath Technology Inc.

Part No. TK2350
Description  STEREO 300W (4 OHM ) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSINGTM TECHNOLOGY
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Maker  TRIPATH [Tripath Technology Inc.]
Homepage  http://www.etelos.com/
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TK2350 Datasheet(HTML) 4 Page - Tripath Technology Inc.

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Tr i p ath Technol ogy, I n c. - Techni cal I n for m ati on
4 of 4
TK2350, Rev 1.5/09.03
Electrical Characteristics TC2001 (Note 10)
TA = 25 °C. See Application/Test Circuit on page 7. Unless otherwise noted, the supply voltage is
VPP=|VNN|=45V.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Iq
Quiescent Current
(Mute = 0V)
V5 = 5V
45
60
mA
IMUTE
Mute Supply Current
(Mute = 5V)
V5 = 5V
20
25
mA
VIH
High-level input voltage (MUTE)
3.5
V
VIL
Low-level input voltage (MUTE)
1.0
V
VOH
High-level output voltage (HMUTE) IOH = 3mA
4.0
V
VOL
Low-level output voltage (HMUTE) IOL = 3mA
0.5
V
VTOC
Over Current Sense Voltage
Threshold
TBD
0.85
0.97
1.09
V
IVPPSENSE
VPPSENSE Threshold Currents
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
138
62
162
154
79
72
178
87
µA
µA
µA
µA
VVPPSENSE Threshold Voltages with
RVPPSENSE = 422KΩ
(Note 11, Note 12)
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
57.6
25.9
68.4
65.0
33.3
30.4
75.8
37.1
V
V
V
V
IVNNSENSE VNNSENSE Threshold Currents
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
152
65
174
169
86
77
191
95
µA
µA
µA
µA
VVNNSENSE Threshold Voltages with
RVNNSENSE = 392KΩ
(Note 11, Note 12)
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
-59.0
-25.2
-68.2
-66.2
-33.7
-30.2
-75.6
-37.6
V
V
V
V
Note 10: Minimum and maximum limits are guaranteed but may not be 100% tested.
Note 11: These supply voltages are calculated using the IVPPSENSE and IVNNSENSE values shown in the Electrical
Characteristics table. The typical voltage values shown are calculated using a RVPPSENSE and RVNNSENSE value
of 422kohm without any tolerance variation. The minimum and maximum voltage limits shown include either a +1% or
–1% (+1% for Over-voltage turn on and Under-voltage turn off, -1% for Over-voltage turn off and Under-voltage turn on)
variation of RVPPSENSE or RVNNSENSE off the nominal 422kohm and 392kohm values.
These voltage
specifications are examples to show both typical and worst case voltage ranges for a given RVPPSENSE and
RVNNSENSE resistor values of 422kohm and 392kohm. Please refer to the Application Information section for a more
detailed description of how to calculate the over and under voltage trip voltages for a given resistor value.
Note 12: The fact that the over-voltage turn on specifications exceed the absolute maximum of +/-70V for the TK2350 does not
imply that the part will work at these elevated supply voltages. It also does not imply that the TK2350 is tested or
guaranteed at these supply voltages. The supply voltages are simply a calculation based on the process spread of the
IVPPSENSE and IVNNSENSE currents (see note 7). The supply voltage must be maintained below the absolute
maximum of +/-70V or permanent damage to the TK2350 may occur.


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