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TI(德州仪器) LM4818
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  • TI(德州仪器) LM4818
  • TI(德州仪器) LM4818
  • TI(德州仪器) LM4818
  • TI(德州仪器) LM4818
  • TI(德州仪器) LM4818
  • TI(德州仪器) LM4818
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LM4818

LM4818

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具有关断模式的 350W 单声道、模拟输入 AB 类音频放大器

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The LM4818 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16Ω load or 300mWRMS output power into an 8Ω load with 10% THD+N from a 5V power supply.

The LM4818 Boomer audio power amplifier is designed specifically to provide high quality output power and minimize PCB area with surface mount packaging and a minimal amount of external components. Since the LM4818 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.

The closed loop response of the unity-gain stable LM4818 can be configured using external gain-setting resistors. The device is available in SOIC package type to suit various applications.

  • SOIC Surface Mount Packaging.
  • Switch On/Off Click Suppression.
  • Unity-Gain Stable.
  • Minimum External Components.

Key Specifications

  • THD+N at 1kHz, 350mW Continuous Average Output Power into 16Ω 10% (max)
  • THD+N at 1kHz, 300mW Continuous Average Output Power into 8Ω 10% (max)
  • Shutdown Current 0.7µA (typ)

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

Audio input typeAnalog Input
ArchitectureClass-AB
Speaker channels (max)Mono
RatingCatalog
Power stage supply (max) (V)5.5
Power stage supply (min) (V)2
Load (min) (Ω)8
Output power (W)0.35
THD + N at 1 kHz (%)1
Iq (typ) (mA)1.5
Control interfaceHardware
Closed/open loopOpen
Analog supply (min) (V)2
Analog supply voltage (max) (V)5.5
Operating temperature range (°C)-40 to 85
SOIC (D)829.4 mm² 4.9 x 6
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