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MFG:NS Package Cooled:SMD
Part Number: LM4873
MFG: NS
Package Cooled: SMD
Description: The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will...
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LM4873
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DataSheet
General Description
LM4873 General Description
The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W to a 4load (Note 1) or 2.4W to a 3W load (Note 2)with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode to drive stereo headphones. A Mux Control pin toggles between the two stereo sets of amplifier inputs, allowing for two selectable amplifier 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.
LM4873 Maximum Ratings
Supply Voltage 6.0V
Storage Temperature −65 to +150
Input Voltage −0.3V to VDD +0.3V
Power Dissipation (Note 14) Internally limited
ESD Susceptibility (Note 15) 2000V
ESD Susceptibility (Note 16) 200V
Junction Temperature 150
Solder Information
Small Outline Package
Vapor Phase (60 sec.) 215
Infrared (15 sec.) 220
See AN-450 "Surface Mounting and their Effects on
Product Reliablilty" for other methods of soldering surface
mount devices.
Thermal Resistance
JC (typ)-M16B 20/W
JA (typ)-M16B 80/W
JC (typ)-N16A 20/W
JA (typ)-N16A 63/W
JC (typ)-MTC20 20/W
JA (typ)-MTC20 80/W
JC (typ)-MXA20A 2/W
JA (typ)-MXA20A 41/W (Note 5)
JA (typ)-MXA20A 51/W (Note 6)
JA (typ)-MXA20A 90/W (Note 7)
JC (typ)-MXA28A 2/W
JA (typ)-MXA28A 41/W (Note 8)
JA (typ)-MXA28A 51/W (Note 9)
JA (typ)-MXA28A 90/W (Note 10)
Storage Temperature −65 to +150
Input Voltage −0.3V to VDD +0.3V
Power Dissipation (Note 14) Internally limited
ESD Susceptibility (Note 15) 2000V
ESD Susceptibility (Note 16) 200V
Junction Temperature 150
Solder Information
Small Outline Package
Vapor Phase (60 sec.) 215
Infrared (15 sec.) 220
See AN-450 "Surface Mounting and their Effects on
Product Reliablilty" for other methods of soldering surface
mount devices.
Thermal Resistance
JC (typ)-M16B 20/W
JA (typ)-M16B 80/W
JC (typ)-N16A 20/W
JA (typ)-N16A 63/W
JC (typ)-MTC20 20/W
JA (typ)-MTC20 80/W
JC (typ)-MXA20A 2/W
JA (typ)-MXA20A 41/W (Note 5)
JA (typ)-MXA20A 51/W (Note 6)
JA (typ)-MXA20A 90/W (Note 7)
JC (typ)-MXA28A 2/W
JA (typ)-MXA28A 41/W (Note 8)
JA (typ)-MXA28A 51/W (Note 9)
JA (typ)-MXA28A 90/W (Note 10)
LM4873 Connection Diagram
LM4873
PDF/DataSheet Download
- Datasheet: LM4873
- File Size: 545139 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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LM4873 Relative Products
LM4872ITP/NOPB
IC AMP AUDIO PWR 1W MONO 8USMD
LM4872IBPX
IC AMP AUDIO POWER 1W 8MICROSMD
LM4872IBP
The LM4872IBP is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8W load with less than .2% (THD) from a 5V power supply.Boomer audio power amplifiers were designed specifically to provide high quality ou...
LM4872
The LM4872 is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8 load with less than .2% (THD) from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality outpu...
LM4871MX/NOPB
IC AMP AUDIO PWR 3W MONO 8SOIC
LM4871MX
IC AMP AUDIO POWER 3W 8-SOIC
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