- 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：265mW 单声道、模拟输入 AB 类音频放大器
- 点击这里打开及下载LM4902的技术文档资料
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The LM4902 is a bridged audio power amplifier capable of delivering 265mW of continuous average power into an 8Ω load with 1% THD+N from a 3.3V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power from a low supply voltage while requiring a minimal amount of external components. Since the LM4902 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.
The LM4902 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection.
The closed loop response of the unity-gain stable LM4902 can be configured by external gain-setting resistors.
- VSSOP and WSON Packaging
- No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits are Necessary
- Thermal Shutdown Protection Circuitry
- Unity-Gain Stable
- External Gain Configuration Capability
- Latest Generation "Click and Pop" Suppression Circuitry
- THD+N at 1kHz for 265mW Continuous Average Output Power into 8Ω, VDD = 3.3V 1.0% (max)
- THD+N at 1kHz for 675mW Continuous Average Output Power into 8Ω, VDD = 5V 1.0% (max)
- Shutdown Current 0.1μA (typ)
All trademarks are the property of their respective owners.
- Audio input type
- Analog Input
- Architecture
- Class-AB
- Speaker channels (Max)
- Mono
- Power stage supply (Max) (V)
- 5.5
- Power stage supply (Min) (V)
- 2
- Load (Min) (ohms)
- 8
- Output power (W)
- 1
- THD + N @ 1 kHz (%)
- 0.4
- Iq (Typ) (mA)
- 4
- Control interface
- Hardware
- Closed/open loop
- Closed
- Analog supply (Min) (V)
- 2
- Analog supply (Max) (V)
- 5.5
- PSRR (dB)
- 70
- Operating temperature range (C)
- -40 to 85
LM4902的完整型号有：LM4902MM/NOPB，以下是这些产品的关键参数及官网采购报价：
LM4902MM/NOPB，工作温度：-40 to 85，封装：VSSOP (DGK)-8，包装数量MPQ：1000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LM4902MM/NOPB的批量USD价格：.395（1000+）
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