General DescriptionThe LPA2163 is a Build in EQ Function 8W, 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 2A output current for load. It can provide up to 6.5V stable DC voltage for amplifier so that it can display 5.7W output at 10% THD with a 4Ω load. When it provides 5.0V DC voltage, it can provide 3.4W output at 10% THD with a 4Ω load. The LPA2163 also can work at class-AB mode which make LPA2163 could apply to device with radio receiver. The other character of LPA2163 contact OCP、 OTP and high noise suppression for FR signal. The LPA2163 is available in ESOP-16.
Applications
Portable Bluetooth Speaker
Cellular and Smart mobile phone
Square Speaker
Features
Build in EQ Function
Integrated boost convertor
Shut-down current:<3uA
Output voltage Up to 5.0V/2.0A
Internal Compensation
Max duty cycle: 90%
500KHz fixed frequency switching for amplifier work at class_D mode and 1.2MHz 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=2Ω,POUT=8W,boost to 6.0V for amplifier
POUT at 1% THD+N,VIN=3.7V for boost convertor
RL=4Ω,POUT=3.8W,boost to 6.0V for amplifier
RL=4Ω,POUT=6W,boost to 6.0V for amplifier
Filterless, Low Quiescent Current and Low EMI
Amplifier Efficiency up to 84%
Excellent POP&CLICK rejection
Short Circuit Protection, OCP, OTP
Few External Components to Save the Space and cost
Free LC filter digital modulation, direct-drive speakers
Pb-Free Package