Class AB Amplifiers

LPA8003-Class AB Amplifiers
2.5-5.5Input Voltage(V):
Class ABClass:
2.7W,5V@4Ω,10%Output Power(W):
1Output Channel:
XGain Control:
XShort Circuit Protection:
1Terminal Current(uA):

3-Walts Mono Filter-free Audio Power Amplifier

General Description

The LPA8003 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The LPA8003 is capable of delivering 3W of continuous average power to an 8 BTL and with less than 10% distortion (THD+N) from a 5.0V power supply.The LPA8003 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The LPA8003 contains circuitry to prevent from ”pop and click” noise that would otherwise occur during turn-on and turn-off transitions. For maximum flexibility, the LPA8003 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). The LPA8003 is available in a ESOP8 package.


PMP,PSP, Game, Data-Bank
Cellular and Smart mobile phone


2.5-5.5V operation
65dB PSRR at 217Hz, VDD=5V
0.1μA ultra low current shutdown mode
Improved pop & click circuitry
Unique Modulation Scheme Reduces EMI Emissions
0.1-μA Shutdown Current
No output coupling capacitors, snubber networks or
bootstrap capacitors required
External gain configuration capability
Shutdown Pin has 1.8V Compatible Thresholds
BTL output can drive capacitive loads
RoHS compliant and 100% lead(Pb)-free

Marking Information

Please see specification. 
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