Class F Amplifiers

LPA2172-Class F Amplifiers
2.5-6.5Input Voltage(V):
Class FClass:
5W,5V@2Ω,10%Output Power(W):
1Output Channel:
XGain Control:
XShort Circuit Protection:
2Terminal Current(uA):

Filterless 5.2W Class- F Mono Audio Amplifier

General Description

The LPA2172 is a 5.2W, class-F mono audio amplifier integrated Class AB/D optional mode. It is capable of delivering 5.2watts of continuous average power to a 2Ω BTL load with less than 10% distortion (THD) from a 5V DC power supply. 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. The LPA2172 is available in ESOP-8.


Portable Bluetooth Speaker
Cellular and Smart mobile phone
Square Speaker



Shutdown current:<0.5uA
600KHz fixed frequency switching for amplifier
5.2W Output at 10% THD with a 2 Ω Load and 5V VDD for amplifier
4.2W Output at 1% THD with a 2 Ω Load and 5V VDD for amplifier
3.2W Output at 10% THD with a 4 Ω Load and 5V VDD for amplifier
Short Circuit Protection
Filterless,Low Quiescent Current and Low EMI
Amplifier Efficiency up to 90%
Free LC filter digital modulation, direct-drive speakers
Thermal Shutdown
Few External Components to Save the Space and cost
Pb-Free Package

Marking Information

Please see specification. 
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