BL6331

BL6331 BL6331 MONAURAL 3W Non-Clip DIGITAL AUDIO POWER AMPLIFIER Features Professional non-clip output control function: Maximum non-clip output 800mW(VDD=4.2v, RL=8Ω,NC1 mode) Four mode can be selected with CTRL terminal: NC1( NonClip1), NC2 (nonClip2), NC_OFF (NonClip-off), shutdown Maximum output (work in nonclip-off mode) 3W（VDD=5.0V, RL=4Ω, THD+N=10%） 0.82W（VDD=3.6V, RL=8Ω, THD+N=10%） THD+N 0.06% (VDD = 3.6V, RL=8Ω, PO=0.4W, 1kHZ) Efficiency With an 8Ω Speaker: 88% at 400 mW 80% at 150 mW Optimized PWM Output Stage Eliminates LC Output Filter Improved PSRR (−75 dB) and Wide Supply Voltage (2.5 V to 5.5 V) Eliminates Need for a Voltage Regulator Over-current and Thermal Protection function Low voltage Malfunction prevention function Available in space-saving package: 9-bump WLCSP Applications Mobile phone, PDA MP3/4, PMP, GPS Portable electronic devices Pin Diagrams 12 3 A IN+ VDD VO+ B GND VREF PGND C IN- CTRL VO- top view General Description BL6331 is a 3-W (VDD=5.0V, RL=4Ω) high efficiency filter-free class-D audio power amplifier in a wafer chip scale package (WLCSP). BL6331 has a “Professional non-clip output control circuit” which reducing distortion of output signal due to either the over level input signal or power supply voltage down with battery, Features like 88% efficiency, −75dB PSRR, and improved RF-rectification immunity make the BL6331 ideal for cellular handsets. In cellular handsets, the earpiece, speakerphone, and melody ringer can eac...