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LM4805 Datasheet Low Voltage High Power Audio Power Amplifier

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: August 2005 .. LM4805 Low Voltage High Power Audio Power Amplifier LM4805 Low Voltage High Power Audio Power.

General Description

The LM4805 is a boosted audio power amplifier designed for driving 8ohm speakers in portable applications.

It delivers at least 1W continuous power to an 8Ω load from any input voltage between 3V and 4.6V with less than 2% THD+N.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external ponents.

Key Features

  • a low-power consumption shutdown mode along with an internal thermal shutdown protection mechanism and short circuit protection. The LM4805 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4805 is unity-gain stable and can be configured by external gain-setting resistors. Key Specifications j Quiescent Power Supply Current (VDD = 3V) j Output Power 14mA (typ) 1W (typ) 2µA (max) (VDD = 3.0V, RL = 8Ω, THD+.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LM4801 1W Stereo Audio Amplifier Plus Adjustable LDO
LM4802B Audio Power Amplifier
LM4808 Dual 105mW Headphone Amplifier
LM4809 Dual 105mW Headphone Amplifier
LM4810 Dual 105mW Headphone Amplifier
LM4811 Dual 105mW Headphone Amplifier
LM4816 1W Stereo Audio Amplifier + Adjustable Output Limiter
LM4817 1W Stereo Audio Amplifier
LM4818 350mW Audio Power Amplifier
LM4819 350mW Audio Power Amplifier

LM4805 Distributor