The LM4929 is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16 load or 25mW per channel into a 32 load at 1% THD+N from a 3V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4929 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4929 is configured for OCL (Output Capacitor-Less) outputs, operating with no DC blocking capacitors on the outputs.

The LM4929 features a low-power consumption shutdown mode with a faster turn on time. Additionally, the LM4929 features an internal thermal shutdown protection mechanism.

The LM4929 is unity gain stable and may be configured with external gain-setting resistors.

• OCL outputs No DC Blocking Capacitors
• External Gain-Setting Capability
• Available in Space-Saving VSSOP Package
• Ultra Low Current Shutdown Mode
• 2V - 5.5V Operation
• Ultra Low Noise

Key Specifications

• PSRR at 217Hz and 1kHz
• Output Power at 1kHz with VDD = 2.4V, 1% THD+N into a 16 load, 65dB (Typ)
• Output Power at 1kHz with VDD = 3V, 1% THD+N into a 16 load, 25 mW (Typ)
• Shutdown current, 40 mW (Typ), 2.0A (Max)
• Output Voltage change on release from Shutdown VDD = 2.4V, RL = 16, 1mV (Max)

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

• Audio input type
• Analog Input
• Architecture
• Class-AB
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 5.5
• Power stage supply (Min) (V)
• 2
• Load (Min) (ohms)
• 16
• Output power (W)
• 0.4
• THD + N @ 1 kHz (%)
• 0.03
• Iq (Typ) (mA)
• 2
• Control interface
• Shutdown Mode
• Closed/open loop
• Open
• Analog supply (Min) (V)
• 2
• Analog supply (Max) (V)
• 5.5
• PSRR (dB)
• 65
• Operating temperature range (C)
• -40 to 85

LM4929的完整型号有：LM4929MMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM4929MMX/NOPB，工作温度：-40 to 85，封装：VSSOP (DGS)-10，包装数量MPQ：3500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM4929MMX/NOPB的批量USD价格：.965（1000+）

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