- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频放大器 - 扬声器放大器
- 功能描述：40mW 单声道模拟输入耳机放大器
- 点击这里打开及下载LM4929的技术文档资料
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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
- 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), 2.0μA (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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