Stereo 11W Audio Power Amplifier with Mute


Product details


Audio input type Analog Input Architecture Class-AB Speaker channels (Max) Stereo Power stage supply (Max) (V) 40 Power stage supply (Min) (V) 9 Load (Min) (ohms) 4 Output power (W) 11 THD + N @ 1 kHz (%) 0.08 Iq (Typ) (mA) 5 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 9 Analog supply (Max) (V) 40 PSRR (dB) 50 Operating temperature range (C) -20 to 80 open-in-new Find other Speaker amps

Package | Pins | Size

TO-263 (KTW) 9 146 mm² 10.16 x 14.35 open-in-new Find other Speaker amps


  • Drives 4Ω and 8Ω Loads
  • Integrated Mute Function
  • Internal Gain Resistors
  • Minimal External Components Needed
  • Single Supply Operation
  • Internal Current Limiting and Thermal Protection
  • Compact 9-lead TO-220 Package
  • Wide Supply Range 9V - 40V

Key Specifications

  • Output Power at 10% THD with 1kHz into 4Ω at VCC = 24V 11 W (typ)
  • Output Power at 10% THD with 1kHz into 8Ω at VCC = 24V 7 W (typ)
  • Closed Loop Gain 34 dB (typ)
  • PO at 10% THD+N @ 1kHz into 4Ω Single-Ended DDPAK Package at VCC=12V 2.5 W (typ)
  • PO at 10% THD+N @ 1kHz into 8Ω Bridged DDPAK Package at VCC=12V 5 W (typ)

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The LM4755 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load or 7W per channel into 8Ω using a single 24V supply at 10% THD+N. The internal mute circuit and pre-set gain resistors provide for a very economical design solution.

Output power specifications at both 20V and 24V supplies and low external component count offer high value to consumer electronic manufacturers for stereo TV and compact stereo applications. The LM4755 is specifically designed for single supply operation.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet LM4755 Stereo 11W Audio Power Amplifier with Mute datasheet (Rev. E) Apr. 04, 2013
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019

Design & development

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Design tools & simulation

SNAM055.ZIP (28 KB) - PSpice Model
SNAM056.TSC (747 KB) - TINA-TI Reference Design
SNAM057.ZIP (21 KB) - TINA-TI Spice Model
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CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTW) 9 View options

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