tk2070 Tripath Technology Inc., tk2070 Datasheet - Page 3

• Manufacturer Part Number: tk2070
• Description: Stereo 70w 4ohm Class-t Digital Audio Amplifier Driver Using Digital Power Processing Dpp Technology
• Manufacturer: Tripath Technology Inc.

TPS1035
E L E C T R I C A L C H A R A C T E R I S T I C S – T C 2 0 0 1
E L E C T R I C A L C H A R A C T E R I S T I C S – T K 2 0 7 0
T
Note 4: These supply voltages are calculated using the IVPPSENSE values shown in the Electrical Characteristics
Note 5: The fact that the over-voltage turn on specifications exceed the absolute maximum of +26V for the TK2070
T
T
I5
fsw
V
V
V
R
I
I
V
V
I
I
V
SYMBOL
q
MUTE
SC
VPPSENSE
JA
JC
A
SYMBOL
SYMBOL
IN
OUTHI
OUTLO
IH
IL
VPPSENSE
IN
= 25 qC. See Application/Test Circuit. Unless otherwise noted, the supply voltage is V
3
table. The typical voltage values shown are calculated using a RVPPSENSE value of 187kohm 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 off the nominal value. These voltage specifications are examples to show both
typical and worst case voltage ranges for a given RVPPSENSE resistor values of 187kohm. 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.
does not imply that the part will work at these elevated supply voltages. It also does not imply that the
TK2070 is tested or guaranteed at these supply voltages. The supply voltages are simply a calculation based
on the process spread of the IVPPSENSE currents (see note 7). The supply voltage must be maintained
below the absolute maximum of +26V or permanent damage to the TK2070 may occur.
Quiescent Current
(No load, Mute = 0V)
Mute Supply Current
(No load, TC2001 Mute = 5V,
TPS1035 Sleep = 5V)
High-level input voltage (MUTE)
Low-level input voltage (MUTE)
Short circuit current limit
VPPSENSE Threshold Currents
Threshold Voltages with
R
(Note 4, Note 5)
Junction-to-Ambient Thermal Resistance
Junction-to-case Thermal Resistance
Supply Current
Switching Frequency (adjustable via CFB)
Input Sensitivity
High Output Voltage
Low Output Voltage
Input Impedance
Input DC Bias
VPPSENSE
= 187K :
PARAMETER
PARAMETER
PARAMETER
V
V5 = 5V
V
V5 = 5V
I
I
V
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
IH
IL
DD
DD
DD
= See Mute Control Section
= See Mute Control Section
= 24V
= 24V
= 24V
CONDITIONS
T r i p a t h T e c h n o l o g y , I n c . - T e c h n i c a l I n f o r m a t i o n
V5-0.5
MIN.
600
MIN.
25.8
11.6
0
138
3.5
62
TYP.
650
Value
2.5
60
TYP.
30.3
28.8
14.8
13.5
2
162
154
7.5
50
20
27
79
72
8
4
7
MAX.
TK2070 – MC/2.1/10-03
100
1.5
MAX.
33.3
16.3
178
1.0
60
87
CC
UNITS
UNITS
kHz
mA
mV
= 24V.
k:
UNITS
V
V
V
mA
mA
mA
°C/W
°C/W
P A
P A
P A
P A
P A
V
V
A
V
V
V
V