LR6311 Datasheet, PDF (1/13 Pages) Leshan Radio Company – 3 Watt Mono Filter-Free Class-D Audio Power Amplifier

Leshan Radio Co ., Ltd
LR6311
3 Watt Mono Filter-Free Class-D Audio Power Amplifier
Features
Efficiency With an 8-Ω Speaker:
88% at 400 mW
80% at 100 mW
2.6mA Quiescent Current
0.4µA Shutdown Current
Optimized PWM Output Stage Eliminates LC Output Filter
Internally Generated 250-kHz Switching Frequency Eliminates Capacitor and
Resistor
Improved PSRR (−75 dB) and Wide Supply Voltage (2.5 V to 5.5 V) Eliminates
Need for a Voltage Regulator
Fully Differential Design Reduces RF Rectification and Eliminates Bypass
Capacitor
Improved CMRR Eliminates Two Input Coupling Capacitors
Available in space-saving package: 9-bump WLCSP
General Description
ss-D audio power amplifier in
The LR6311 is a 3-W high efficiency filter-free cla
a wafer chip scale package (WCSP) that requires only three external components.
Features like 88% efficiency, −75dB PSRR, and improved RF-rectification
immunity make the LR6311 ideal for cellular handsets. In cellular handsets, the
earpiece, speaker phone, and melody ringer can each be driven by the LR6311.
Applications
Mobile phone、PDA
MP3/4、PMP
Portable electronic devices
1/13