TPA2012D2_17 Datasheet, PDF (1/33 Pages) Texas Instruments – 2.1-W/Channel Stereo Filter-Free Class-D Audio Power Amplifier

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TPA2012D2
SLOS438F – DECEMBER 2004 – REVISED MARCH 2017
TPA2012D2 2.1-W/Channel Stereo Filter-Free Class-D Audio Power Amplifier
1 Features
•1 Output Power By Package:
– WQFN:
– 2.1 W/Ch Into 4 Ω at 5 V
– 1.4 W/Ch Into 8 Ω at 5 V
– 720 mW/Ch Into 8 Ω at 3.6 V
– DSBGA:
– 1.2 W/Ch Into 4 Ω at 5 V
(Thermally Limited)
– 1.3 W/Ch Into 8 Ω at 5 V
– 720 mW/Ch Into 8 Ω at 3.6 V
• Only Two External Components Required
• Power Supply Range: 2.5 V to 5.5 V
• Independent Shutdown Control for Each Channel
• Selectable Gain of 6, 12, 18, and 24 dB
• Internal Pulldown Resistor on Shutdown Pins
• High PSRR: 77 dB at 217 Hz
• Fast Start-Up Time (3.5 ms)
• Low Supply Current
• Low Shutdown Current
• Short-Circuit and Thermal Protection
• Space-Saving Packages
– 2.01-mm × 2.01-mm NanoFree™ DSBGA
(YZH)
– 4-mm × 4-mm Thin WQFN (RTJ) With
PowerPAD™
3 Description
The TPA2012D2 is a stereo, filter-free, Class-D audio
amplifier (Class-D amp) available in a DSBGA or
WQFN package. The TPA2012D2 only requires two
external components for operation.
The TPA2012D2 features independent shutdown
controls for each channel. The gain can be selected
to 6, 12, 18, or 24 dB using the G0 and G1 gain
select pins. High PSRR and differential architecture
provide increased immunity to noise and RF
rectification. In addition to these features, a fast start-
up time and small package size make the
TPA2012D2 class-D amp an ideal choice for both
cellular handsets and PDAs.
The TPA2012D2 is capable of driving 1.4 W/Ch at
5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2
is also capable of driving 4 Ω. The TPA2012D2 is
thermally limited in DSBGA and may not achieve
2.1 W/Ch for 4 Ω. The maximum output power in the
DSBGA is determined by the ability of the circuit
board to remove heat. Figure 33 shows thermally
limited region of the DSBGA in relation to the WQFN
package. The TPA2012D2 provides thermal and
short-circuit protection.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA2012D2
DSBGA (16)
WQFN (20)
2.01 mm × 2.01 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Wireless or Cellular Handsets and PDAs
• Portable DVD Players
• Notebook PCs
• Portable Radios
• Portable Gaming
• Educational Toys
• USB Speakers
Simplified Application Schematic
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.