The TPA3123D2 is a 25-W (per channel) efficient, Class-D audio power amplifier for driving stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied-load configuration. The TPA3123D2 can drive stereo speakers as low as 4 . The efficiency of the TPA3123D2 eliminates the need for an external heat sink when playing music.

The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, 36 dB.

The patented start-up and shut-down sequences minimize pop noise in the speakers without additional circuitry.

• 25-W/ch into a 4- Load from a 27-V Supply
• 20-W/ch into a 4- Load from a 24-V Supply
• Operates from 10 V to 30 V
• Efficient Class-D Operation Eliminates Need for Heat Sinks
• Four Selectable, Fixed-Gain Settings
• Internal Oscillator (No External Components Required)
• Single-Ended Analog Inputs
• Thermal and Short-Circuit Protection With Auto Recovery
• Space-Saving Surface-Mount 24-Pin TSSOP Package
• Pin-to-Pin compatible with TPA3120D2
• Advanced Power-Off Pop Reduction
• APPLICATIONS
  • Televisions

System Two, Audio Precision are trademarks of Audio Precision, Inc.

• Audio input type
• Analog Input
• Architecture
• Class-D
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 30
• Power stage supply (Min) (V)
• 10
• Load (Min) (ohms)
• 4
• Output power (W)
• 25
• SNR (dB)
• 99
• THD + N @ 1 kHz (%)
• 0.08
• Iq (Typ) (mA)
• 23
• Control interface
• Hardware
• Closed/open loop
• Closed
• Analog supply (Min) (V)
• 10
• Analog supply (Max) (V)
• 30
• PSRR (dB)
• 60
• Operating temperature range (C)
• -40 to 85

TPA3123D2的完整型号有：TPA3123D2PWP、TPA3123D2PWPR，以下是这些产品的关键参数及官网采购报价：

TPA3123D2PWP，工作温度：-40 to 85，封装：HTSSOP (PWP)-24，包装数量MPQ：60个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPA3123D2PWP的批量USD价格：3.134（1000+）

TPA3123D2PWPR，工作温度：-40 to 85，封装：HTSSOP (PWP)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPA3123D2PWPR的批量USD价格：2.686（1000+）

TPA3123D2EVM — TPA3123D2 评估模块 (EVM)

The TPA3123D2 evaluation module consists of a single 25W, class-D, stereo audio power? amplifier complete with a small number of external components mounted on a circuit board that are used to directly drive speakers with an external analog audio source as the input.

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