LM4668   
10W High-Efficiency Mono BTL Audio Power Amplifier [Life-time buy] 		Click link to Download

Features
•Soft-start circuitry eliminates noise during turn-on transition
•Low current shutdown mode
•Low quiescent current
•6W BTL output, RL = 8
•Short circuit protection
•Fixed, internally set gain of 30dB

Description

The LM4668 is a high efficiency switching audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 6W to an 8 mono BTL load with less than 1% distortion (THD+N) from a 12VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4668 features a micro-power, active-low shutdown mode, an internal thermal shutdown protection mechanism, and short circuit protection.

The LM4668 contains advanced transient ("pop and click") suppression circuitry that eliminates noises that would otherwise occur during turn-on and turn-off transitions.

Key Specification
Power Output BTL (VDD = 14V, fIN = 1kHz, THD+N = 10%, RL = 8)10W (typ)
Quiescent Power Supply Current30mA (typ)
Efficiency (VDD = 12V, fIN = 1kHz, RL = 8, POUT = 6W)79% (typ)
Shutdown Current0.15mA (typ)
Fixed Gain30dB (typ)

Applications
•Flat Panel Monitors
•Flat Panel TVs
•Computer Sound Cards



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Typical Application
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Connection Diagram
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Typical Performance
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Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM4668LD/NOPB

RoHS



LLP		Lifetime buy
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide2000
DIGIKEYWorldwide4
$2.40 each at 1K+ pcsreel
of
250
LM4668LDX/NOPB

RoHS



LLP		Lifetime buy
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide5000
DIGIKEYWorldwide0
$2.40 each at 1K+ pcsreel
of
2500
LM4668MH/NOPB

RoHS



TSSOP EXP PAD		Lifetime buy
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
NEWARKAmericas345
$2.40 each at 1K+ pcsrail
of
73
LM4668MHX/NOPB

RoHS



TSSOP EXP PAD		Lifetime buy
Lead Time: 16 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.40 each at 1K+ pcsreel
of
2500

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM4668LD
MAX9704
National Semiconductor
30 Nov 2009
LM4668LDX
MAX9704
National Semiconductor
30 Nov 2009
LM4668MH
MAX9704
National Semiconductor
30 Nov 2009
LM4668MHX
MAX9704
National Semiconductor
30 Nov 2009

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM4668LD/NOPB
LLP143260RoHSDownloadN/A
NS
UZXYTT
L4668LD
LM4668LDX/NOPB
LLP143260RoHSDownloadN/A
NS
UZXYTT
L4668LD
LM4668MH/NOPB
TSSOP EXP PAD201260RoHSDownloadN/A
NSUZXYTT
LM4668
MH
LM4668MHX/NOPB
TSSOP EXP PAD201260RoHSDownloadN/A
NSUZXYTT
LM4668
MH

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4668LDPVIP05009960008550005242608584
LM4668LDXPVIP05009960008550005242608584
LM4668MHPVIP05009960008550005242608584
LM4668MHXPVIP05009960008550005242608584

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
LM4668LD
MAX9704
National Semiconductor
30 Nov 2009
LM4668LDX
MAX9704
National Semiconductor
30 Nov 2009
LM4668MH
MAX9704
National Semiconductor
30 Nov 2009
LM4668MHX
MAX9704
National Semiconductor
30 Nov 2009

[Information as of 22-Nov-2009]