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TAS2553 数据表(PDF) 42 Page - Texas Instruments

部件名 TAS2553
功能描述  TAS2553 2.8-W Class-D Mono Audio Amplifier with Class-G Boost and Speaker Sense
PDF  58 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TAS2553 数据表(HTML) 42 Page - Texas Instruments

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IN-
VBAT
IN+
OUT-
OUT+
ADDR
PVDD
VBOOST
SW
L2 (opt.)
I2C
I2S
IOVDD
10 nF
C2
22 2F
VREG
VSENSE-
VSENSE+
L1
2.2 2H
BIAS
3.0 V À 5.5 V
AGND
1 2F
L3 (opt.)
To
Speaker
+
-
AVDD
EN
IVCLKIN
5
2
PGND
2
2
3
0.1 2F
C1
10 2F
C3
1 nF
(opt.)
C4
1 nF
(opt.)
0.1 2F
1.65 V À 1.95 V
1.5 V À
3.6 V
I
2C Address Select
Enable
PDM Clock
(opt.)
I
2C Interface
I
2S Interface
0.1 2F
TAS2553
SLAS978B – SEPTEMBER 2013 – REVISED FEBRUARY 2014
www.ti.com
8 Applications and Implementation
8.1 Application Information
The TAS2553 is a digital or analog input high efficiency Class-D audio power amplifier with advanced battery
current management and an integrated Class-G boost converter. In auto passthrough mode, the Class-G boost
converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves
efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio
is required, the boost quickly activates to provide louder audio than a stand-alone amplifier connected directly to
the battery. To enable load monitoring, the TAS2553 constantly measures the current and voltage across the
load and provides a digital stream of this information back to a processor.
8.2 Typical Applications
8.2.1 Typical Application - Digital Audio Input
Figure 51. Typical Application Schematic
Table 11. Recommended External Components
COMPONENT
DESCRIPTION
SPECIFICATION
MIN
TYP
MAX
UNIT
L1
Boost Converter Inductor
Inductance, 20% Tolerance
2.2
µH
Saturation Current
2.6
A
L2, L3
EMI Filter Inductors (optional)
Impedance at 100MHz
120
Ω
DC Resistance
0.095
Ω
DC Current
1.5
A
Size
0402
EIA
C1
Boost Converter Input Capacitor
Capacitance, 20% Tolerance
10
µF
42
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Copyright © 2013–2014, Texas Instruments Incorporated
Product Folder Links: TAS2553



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