LM4819   
350mW Audio Power Amplifier with Shutdown Mode 		Click link to Download

Features
•LLP, SOP, and MSOP surface mount packaging.
•Switch on/off click suppression.
•Unity-gain stable.
•Minimum external components.

Description

The LM4819 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16 load or 300mWRMS output power into an 8 load with 10% THD+N from a 5V power supply.

The LM4819 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 LM4819 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 LM4819 can be configured using external gain-setting resistors. The device is available in LLP, MSOP, and SO package types to suit various applications.

Key Specification

THD+N at 1kHz, 350mW continuous average output power into 16

10% (max)

THD+N at 1kHz, 300mW continuous average output power into 8

10% (max)

Shutdown Current

0.7µA (typ)

Applications
•General purpose audio
•Portable electronic devices
•Information Appliances (IA)



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ParametersValues
Power@ 8Ohms, 1% THD 0.25 Watt
Power@ 8Ohms, 10% THD 0.3 Watt
THD 1 %
Channels 1 Channels
Supply Range +2.0 - +5.5 V
THD Conditions f=1kHz, Avd=2, Po = 0.27Wrms
User Supply 5 Volt
Shutdown Type High
Temperature Min -40 deg C
Temperature Max 85 deg C

Datasheet
TitleSizeDateOther
Language
LM4819 350mW Audio Power Amplifier with Shutdown Mode616
Kbytes		17-Apr-02 


Featured Application Notes
TitleSizeDateOther
Language
AN-1645: Application Note 1645 LM4702 Driving a MOSFET Output Stage655
Kbytes		24-May-07 中文
AN-1490: Application Note 1490 LM4702 Power Amplifier1033
Kbytes		26-May-06 中文


More Application Notes
TitleSizeDateOther
Language
AN-1645: Application Note 1645 LM4702 Driving a MOSFET Output Stage655
Kbytes		24-May-07 中文
AN-1490: Application Note 1490 LM4702 Power Amplifier1033
Kbytes		26-May-06 中文

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM4819LD/NOPB

RoHS



LLP		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.30 each at 1K+ pcsreel
of
1000
LM4819LDX/NOPB

RoHS



LLP		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.30 each at 1K+ pcsreel
of
4500
LM4819M/NOPB

RoHS



SOIC NARROW		Lifetime buy
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
RS COMPONENTSWorldwide20
TAYLORAmericas4636
$0.25 each at 1K+ pcsrail
of
95
LM4819MX/NOPB
LM4819MX

RoHS



SOIC NARROW		Full production
Lead Time: 10 weeks

 
DistributorRegionQty
AVNET-EMWorldwide2500
DIGIKEYWorldwide0
KEIKONGAsia Pacific55000
TAYLORAmericas5000
$0.25 each at 1K+ pcsreel
of
2500
LM4819MM/NOPB

RoHS



MINI SOIC		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide0
FUTUREWorldwide1100
TAYLORAmericas3992
$0.25 each at 1K+ pcsreel
of
1000
LM4819MMX/NOPB

RoHS



MINI SOIC		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
TAYLORAmericas7000
$0.25 each at 1K+ pcsreel
of
3500

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM4819M
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM4819MBD
350mW Audio Power Amplifier with Shutdown ModeFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide2
$60.00 each1

The LM4819 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.

This LM4819MBD is an evaluation board designed to ease the evaluation and effort during the development of a circuit using the LM4819M. It is an easy to use stand-alone board that requires power and GND, an input signal and an output load.

Features:

  • Available in SOP surface mount package.
  • Switch on/off click suppression.
  • Unity-gain stable.
  • Minimum external components.

Applications:

  • General purpose audio
  • Portable electronic devices
  • Information Appliances (IA)

Contents:

  • Fully Assembled LM4819M Evaluation Board
  • Instructions for where to locate and download the datasheet

Please note: application information and board layout can be found in datasheet


Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM4819LD/NOPB
LLP83260RoHSDownloadN/A
XYTT
G19
LM4819LDX/NOPB
LLP83260RoHSDownloadN/A
XYTT
G19
LM4819M/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
LM48
19M
LM4819MX/NOPB
LM4819MX
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
LM48
19M
LM4819MM/NOPB
MINI SOIC81260RoHSDownloadN/A
ZXTT
G19
LM4819MMX/NOPB
MINI SOIC81260RoHSDownloadN/A
ZXTT
G19

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4819LDCS065238968520440200011249079519
LM4819LDXCS065238968520440200011249079519
LM4819MCS065238968520440200011249079519
LM4819MMCS065238968520440200011249079519
LM4819MMXCS065238968520440200011249079519
LM4819MXCS065238968520440200011249079519

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM4819M
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009

[Information as of 22-Nov-2009]