BL6305 BL6305 * Mono Filter-Free Class-D Audio Power Amplifier
Features
_ Efficiency With an 8-_ Speaker:
88% at 400 mW
80% at 100 mW
_ 2.1mA 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 CapacitorBL6305 BL6305 *
_ Improved CMRR Eliminates Two Input Coupling Capacitors
_ MSOP8, SOP8, DFN8 package
General DescriptionBL6305 BL6305 *
The BL6305 is a 2.6W high efficiency filter-free class-D audio power amplifier that requires
only three external components.
Features like 88% efficiency, −75dB PSRR, and improved RF-rectification immunity makeBL6305 BL6305 *
the BL6305 ideal for cellular handsets. In cellular handsets, the earpiece, speaker phone, and
melody ringer can each be driven by the BL6305.
Applications
_ Mobile phone、PDA
_ MP3/4、PMP
_ Portable electronic devices