LM4752 - Stereo 11W Audio Power Amplifier
Datasheet Packaging Samples & Pricing Reliability Knowledge Base

Features
•Drives 4Ω and 8Ω loads
•Internal gain resistors (AV = 34 dB)
•Minimum external component requirement
•Single supply operation
•Internal current limiting
•Internal thermal protection
•Compact 7-lead TO-220 package
•Low cost-per-watt
•Wide supply range 9V - 40V

Key Specification

•Output power at 10% THD+N with 1kHz into 4Ω at VCC = 24V:  11W (typ)
•Output power at 10% THD+N with 1kHz into 8Ω at VCC = 24V:  7W (typ)
•Closed loop gain: 34dB (typ)
•PO at 10% THD+N @ 1 kHz into 4Ω single-ended TO-263 package at VCC = 12V: 2.5W (typ)
•PO at 10% THD+N @ 1kHz into 8Ω bridged TO-263 package at VCC = 12V: 5W (typ)

General Description

The LM4752 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load, or 7W per channel into 8Ω using a single 24V supply at 10% THD+N.

The LM4752 is specifically designed for single supply operation and a low external component count. More...


Applications

•Compact stereos
•Stereo TVs
•Mini component stereos
•Multimedia speakers
  Typical Application
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ParametersValues
Channels 2 Channels
Mono/Stereo Mono
User Supply 20 Volt
Supply Range +10 - +32
Slew Rate 2 Volts/usec
Power@ 4Ohms, 1% THD 6 Watt
Power@ 8Ohms, 1% THD 3.6 Watt
Power@ 4Ohms, 10% THD 11 Watt
Power@ 8Ohms, 10% THD 7 Watt
THD 0.25 %
THD Conditions Po=0.125W @ Vs=6V , RL=8ohms
Temperature Min 0 deg C
Temperature Max 70 deg C


Typical Performance

*click for larger image


  Connection Diagram
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*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM4752 Stereo 11W Audio Power Amplifier 521
Kbytes		 14-May-08 Download
LM4752 Stereo 11W Audio Power Amplifier (Japanese)
 350 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM4752TSTO-2637NOPB
STD		3
3		245
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$1.19rail
of
45		NSUZXYTTE#
LM4752TS
6 weeks1000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM4752T
LM4766T
NATIONAL SEMICONDUCTOR
16 Nov 2008

General Description

The LM4752 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load, or 7W per channel into 8Ω using a single 24V supply at 10% THD+N.

The LM4752 is specifically designed for single supply operation and a low external component count. The gain and bias resistors are integrated on chip, resulting in a 11W stereo amplifier in a compact 7 pin TO220 package. High output power levels at both 20V and 24V supplies and low external component count offer high value for compact stereo and TV applications. A simple mute function can be implemented with the addition of a few external components.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4752TSSLM04404600353250011002356520

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.


[Information as of 8-Nov-2009]