Class F Amplifiers

LPA2173-Class F Amplifiers
2.5-6.5Input Voltage(V):
EQ,Class FClass:
5W,6.2V@4Ω,10%Output Power(W):
1Output Channel:
XGain Control:
XShort Circuit Protection:
2Terminal Current(uA):

6W Class- F Mono Audio Amplifier With EQ Function

General Description

The LPA2173 is a 8W, class-F audio amplifier with a mode pin for switch the work mode. 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 LPA2173 is available in ESOP-8.


Portable Bluetooth Speaker
Cellular and Smart mobile phone
Square Speaker



 Shutdown current:<3uA
 500KHz fixed frequency switching for amplifier
 8W Output at 10% THD with a 2Ω Load and 6.0V VDD for amplifier
 3.4W Output at 10% THD with a 4Ω Load and 5V VDD for amplifier
 2.7W Output at 1% THD with a 4Ω Load and 5V VDD for amplifier
 Filterless, Low Quiescent Current and Low EMI
 Amplifier Efficiency up to 85%
 Free LC filter digital modulation, direct-drive speakers
 Short Circuit Protection
 Thermal Shutdown
 Few external components to save the space and cost
 Pb-Free Package

Marking Information

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