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BL6311B

BELLING
Part Number BL6311B
Manufacturer BELLING
Description 3 Watt Mono Filter-Free Class-D Audio Power Amplifier
Published Jul 20, 2015
Detailed Description BL6311B 3 Watt Mono Filter-Free Class-D Audio Power Amplifier Features Efficiency With an 8-Ω Speaker: 88% at 400 mW 80...
Datasheet PDF File BL6311B PDF File

BL6311B
BL6311B

Overview
BL6311B 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.
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 components.
Features like 88% efficiency, −75dB 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://www.
belling.
com.
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 BL6311B Function Block Diagram Av1 = 150k/Ri 150k (C1) IN- (A1) IN+ Amp1 (C2) SDB 150k ShutDown Control 300k Bias & Reference PWM Modulator and Power Driver Av2 = 2 V/V OSC & RAMP Start up & Protection OC Detect (B1) VDD (B2) PVDD (A3) Vo- (C3) Vo+ (B3) PGND (A2) GND Notes: Total Voltage Gain = Av1× Av2 = 2 × 150k RI Figure 1.
Function Block Diagram http://www.
belling.
com.
cn - Page 2 of 8 - Ver1.
2 Application Circuit BL6311B Ri Differential Input Ri Vi- - + Vi+ + - PWM & BTL (Closed Loop) VDD To Battery Cs Vo+ Vo- GND SDB Bia...


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