Class X Amplifiers

Specification For Download
LPA2164A-Class X Amplifiers
2.5-5.5Input Voltage(V):
Class XClass:
4W,3.7V@4Ω,Built in boostOutput Power(W):
1Output Channel:
XGain Control:
XShort Circuit Protection:
1Terminal Current(uA):

3-Walts Mono Filter-free Audio Power Amplifier

General Description

The LPA2164A is a 6W, class-F audio amplifier with boost convertor integrated. It offers low THD+N, allowing it to achieve high-quality Power Supply sound reproduction. The new filterless architecture allows the device to drive the speaker directly requiring no low-pass output filters, thus to save the system cost and PCB area. With high performance inductor and diode,the boost convertor can offer 3A switch on current for load. It can provide up to 6.0V stable DC voltage for amplifier so that it can display 6W output at 10% THD with a 3Ù load. When it provides 5.0V DC voltage, it can provide 3.1W output at 10% THD with a 4Ù load. The LPA2164A also can work at class-AB mode which make LPA2164A could apply to device with radio receiver. The other character of LPA2164A contact OCP 、OTP and high noise suppression for FR signal. The LPA2164A is available in SOP-16.


 Portable Bluetooth Speaker
 Cellular and Smart mobile phone
 Square Speaker


 Integrated boost convertor
 Shutdown current:<3uA
 Switch on current :3.0A
 Internal Compensation
 Max duty cycle: 90%
 480KHz fixed frequency switching for amplifier work
at class_D mode and 900KHz for step up convertor
 POUT at 10% THD+N,VIN=3.7V for boost convertor
RL=4Ω,POUT=4.8W,boost to 6.0V for amplifier
RL=4Ω,POUT=3.1W,boost to 5.0V for amplifier
 POUT at 1% THD+N,VIN=3.7V for boost convertor
RL=4Ω,POUT=3.6W,boost to 6.0V for amplifier
RL=4Ω,POUT=1.8W,boost to 5.0V for amplifier
 Filterless, Low Quiescent Current and Low EMI
 Amplifier Efficiency up to 84%
 Excellent POP&CLICK rejection
 OCP, OTP features
 Few External Components to Save the Space and
 Free LC filter digital modulation, direct-drive
 Pb-Free Package

Marking Information

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