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TA0105A View Datasheet(PDF) - Tripath Technology Inc.

Part Name
Description
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TA0105A Datasheet PDF : 29 Pages
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Tripath Technology, Inc. - Technical Information
Pin Description
Pin
1
2
3
4
5, 6
7, 8
9, 12
10, 11
13, 14
15, 16
17,30
18, 29
19
20,27
21,26
22,25
23
24
28
31, 32
33, 34
35
36
37
38
Function
AGND
OVERLOADB
V5
MUTE
IN2, IN1
BBM0, BBM1
GNDKELVIN1,
GNDKELVIN2
OCR2, OCR1
OCS1LP, OCS1LN
OCS1HN, OCS1HP
LO1COM, LO2COM
FDBKN1, FDBKN2
VN12
LO1, LO2
HO1COM, HO2COM
HO1, HO2
VPP
VNN
PGND
OCS2LN, OCS2LP
OCS2HN, OCS2HP
HMUTE
NC
VHIGH
VLOW
Description
Analog ground. This should be the “star” point for all connections to analog
ground.
Normally logic high. Logic low signals onset of clipping. Pin output
impedance is approximately 100kΩ.
5V power supply input.
Logic input. A logic high puts the amplifier in mute mode. Ground pin if not
used. Please refer to the section, Mute Control, in the Application Information.
Audio inputs. (Channels 2 & 1)
Break-before-make timing control to prevent shoot-through in the output
MOSFETs.
Output ground feedback (Channels 1 & 2)
Over-current threshold adjustment (Channels 2 & 1)
Over Current Sense inputs, Channel 1 low-side
Over Current Sense inputs, Channel 1 high-side
Kelvin connection to source of low-side transistor (Channel 1 & 2)
Switching feedback (Channels 1 & 2)
“Floating” supply input for the FET drive circuitry. This voltage must be stable
and referenced to VNN.
Low side gate drive output (Channel 1 & 2)
Kelvin connection to source of high-side transistor (Channel 1 & 2)
High side gate drive output (Channel 1 & 2)
Positive supply voltage input. Connect to positive power supply. Used for
power supply sensing.
Negative supply voltage input. Connect to positive power supply. Used for
power supply sensing.
Power ground. This should be connected to the “star” point for the power
(output) ground.
Over Current Sense inputs, Channel 2 low-side
Over Current Sense inputs, Channel 2 high-side
Logic Output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault” such as an overcurrent, undervoltage, or
overvoltage condition.
Do not connect.
Positive supply voltage sense input. This pin is biased at 2.5V nominally
and left floating in typical applications. An external resistor may also be
connected from VPP to VHIGH to lower the supply voltage operation range.
See the Application Information for a detailed description on how to lower
the supply voltage range.
Negative supply voltage sense input. This pin is biased at 1.25V nominally
and left floating in typical applications. An external resistor may also be
connected from VNN to VLOW to lower the supply voltage operation range.
See the Application Information for a detailed description on how to lower the
supply voltage range.
6
TA0105A – RW/ Rev. 2.2/05.05
 

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