BL6311B Datasheet | BELLING

BL6311B 3 Watt Mono Filter-Free Class-D Audio Power Amplifier Features Efficiency With an 8-Ω Speaker: 88% at 400 m W 80% at 100 m W 2.6m A Quiescent Current 0.4µA Shutdown Current Optimized PWM Output Stage Eliminates LC Output Filter Internally Generated 250-k Hz Switching Frequency Eliminates Capacitor and Resistor Improved PSRR (- 75 d B) and Wide Supply Voltage (2.8 V to 5.5 V) Eliminates Need 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 for General Description The BL6311B is a 3-W high efficiency filter-free class-D audio power amplifier in a wafer chip scale package (WCSP) that requires only three external ponents. Features like 88% efficiency, - 75d B PSRR, and improved RF-rectification immunity make the BL6311B ideal for cellular handsets. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the BL6311B. Applications Mobile phone、PDA MP3/4、PMP Portable electronic devices Pin Diagrams http://.belling..cn - Page 1 of 8 - Ver1.2 Pin Description Pin # A1 A2 A3 B1 B2 B3 C1 C2 C3 Name IN+ GND VOVDD PVDD PGND INSDB VO+ Description Positive differential input Power Ground Negative BTL output Power Supply Power Supply Power Ground Negative differential input Shutdown terminal (low active) Positive BTL output Function Block Diagram Av1 = 150k/Ri 150k (C1) IN- (A1) IN+ Amp1 (C2) SDB 150k Shut Down Control 300k Bias & Reference PWM Modulator and Power Driver Av2 = 2 V/V OSC &...