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LM4871

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3W 单声道模拟输入 AB 类音频放大器

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LM4871

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产品详情

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2 Load (min) (Ω) 3 Output power (W) 3 THD + N at 1 kHz (%) 0.13 Iq (typ) (mA) 6.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 60 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2 Load (min) (Ω) 3 Output power (W) 3 THD + N at 1 kHz (%) 0.13 Iq (typ) (mA) 6.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 60 Operating temperature range (°C) -40 to 85
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGN) 8 16 mm² 4 x 4
  • No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits Required
  • Unity-gain Stable
  • WSON, VSSOP, SOIC, or PDIP Packaging
  • External Gain Configuration Capability
  • Pin Compatible with the LM4861

Key Specifications

  • PO at 10% THD+N, 1kHz
    • LM4871LD: 3Ω , 4Ω Loads; 3W (typ),
      2.5 W (typ)
    • All other LM4871 Packages: 8Ω load
      1.5 W (typ)
  • Shutdown Current 0.6µA (typ)
  • Supply Voltage Range 2.0V to 5.5 V
  • THD at 1kHz at 1W Continuous Average Output Power into 8Ω 0.5% (max)

All trademarks are the property of their respective owners.

  • No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits Required
  • Unity-gain Stable
  • WSON, VSSOP, SOIC, or PDIP Packaging
  • External Gain Configuration Capability
  • Pin Compatible with the LM4861

Key Specifications

  • PO at 10% THD+N, 1kHz
    • LM4871LD: 3Ω , 4Ω Loads; 3W (typ),
      2.5 W (typ)
    • All other LM4871 Packages: 8Ω load
      1.5 W (typ)
  • Shutdown Current 0.6µA (typ)
  • Supply Voltage Range 2.0V to 5.5 V
  • THD at 1kHz at 1W Continuous Average Output Power into 8Ω 0.5% (max)

All trademarks are the property of their respective owners.

The LM4871 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V power supply (see Note). To conserve power in portable applications, the LM4871's micropower shutdown mode (IQ = 0.6µA, typ) is activated when VDD is applied to the SHUTDOWN pin.

Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external components and operate on low supply voltages from 2.0V to 5.5V. Since the LM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low-power portable systems that require minimum volume and weight.

Additional LM4871 features include thermal shutdown protection, unity-gain stability, and external gain set.

Note: An LM4871LD that has been properly mounted to a circuit board will deliver 3W into 3Ω (at 10% THD). The other package options for the LM4871 will deliver 1.5W into 8Ω (at 10% THD). See the section for further information concerning the LM4871LD, LM4871MM, LM4871M, and the LM4871N.

The LM4871 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V power supply (see Note). To conserve power in portable applications, the LM4871's micropower shutdown mode (IQ = 0.6µA, typ) is activated when VDD is applied to the SHUTDOWN pin.

Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external components and operate on low supply voltages from 2.0V to 5.5V. Since the LM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low-power portable systems that require minimum volume and weight.

Additional LM4871 features include thermal shutdown protection, unity-gain stability, and external gain set.

Note: An LM4871LD that has been properly mounted to a circuit board will deliver 3W into 3Ω (at 10% THD). The other package options for the LM4871 will deliver 1.5W into 8Ω (at 10% THD). See the section for further information concerning the LM4871LD, LM4871MM, LM4871M, and the LM4871N.
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* 数据表 LM4871 3W Audio Power Amplifier with Shutdown Mode 数据表 (Rev. F) 2013年 5月 2日

设计和开发

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仿真模型

LM4871 PSpice Model

SNAM137.ZIP (108 KB) - PSpice Model
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仿真模型

LM4871 TINA-TI Reference Design

SNAM135.TSC (786 KB) - TINA-TI Reference Design
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仿真模型

LM4871 TINA-TI Spice Model

SNAM136.ZIP (4 KB) - TINA-TI Spice Model
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SOIC (D) 8 查看选项
VSSOP (DGK) 8 查看选项
WSON (NGN) 8 查看选项
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包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
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  • 制造厂地点
  • 封装厂地点

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