Integrated Circuits (ICs)

LM4873LQX

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Texas Instruments

IC AMP CLASS AB STEREO 3W 24WQFN

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Integrated Circuits (ICs)

LM4873LQX

Unknown

Texas Instruments

IC AMP CLASS AB STEREO 3W 24WQFN

Deep-Dive with AI

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM4873LQX

Features	Shutdown, Input Multiplexer, Depop, Thermal Protection
Max Output Power x Channels @ Load	440 mW, 3 W
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	2-Channel (Stereo) with Stereo Headphones
Package / Case	24-WFQFN Exposed Pad
Supplier Device Package	24-WQFN (4x5)
Type	Class AB
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2 V

LM4873 Series

2.4-W, stereo, analog input Class-AB audio amplifier

Part	Package / Case	Mounting Type	Output Type	Max Output Power x Channels @ Load	Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Features	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case [custom]
Texas Instruments LM4873LQX	24-WFQFN Exposed Pad	Surface Mount	2-Channel (Stereo) with Stereo Headphones	3 W 440 mW	Class AB	24-WQFN (4x5)	85 °C	-40 °C	Depop Input Multiplexer Shutdown Thermal Protection	5.5 V	2 V
Texas Instruments LM4873MTE/NOPB
Texas Instruments LM4873IBL	20-TFBGA DSBGA	Surface Mount	2-Channel (Stereo) with Stereo Headphones	3 W 440 mW	Class AB	20-DSBGA	85 °C	-40 °C	Depop Input Multiplexer Shutdown Thermal Protection	5.5 V	2 V
Texas Instruments LM4873MT/NOPB	20-TSSOP	Surface Mount	2-Channel (Stereo) with Stereo Headphones	3 W 440 mW	Class AB	20-TSSOP	85 °C	-40 °C	Depop Input Multiplexer Shutdown Thermal Protection	5.5 V	2 V	4.4 mm	0.173 in
Texas Instruments LM4873MTEX-1	28-PowerTSSOP	Surface Mount	2-Channel (Stereo) with Stereo Headphones	3 W 440 mW	Class AB	28-HTSSOP	85 °C	-40 °C	Depop Input Multiplexer Shutdown Thermal Protection	5.5 V	2 V			4.4 mm	0.173 "
Texas Instruments LM4873MTX	20-TSSOP	Surface Mount	2-Channel (Stereo) with Stereo Headphones	3 W 440 mW	Class AB	20-TSSOP	85 °C	-40 °C	Depop Input Multiplexer Shutdown Thermal Protection	5.5 V	2 V	4.4 mm	0.173 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	4500	$ 1.68

Description

General part information

LM4873 Series

The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W to a 4Ω load or 2.4W to a 3Ω load with less than 1.0% THD+N (see Notes below). In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. A MUX control pin allows selection between the two stereo sets of amplifier inputs. The MUX control can also be used to select two different closed-loop responses.

Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LM4873 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

The LM4873 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce "clicks and pops" during device turn-on.

Documents

Technical documentation and resources

No documents available