IS31AP2031 CLASS-K AUDIO POWER AMPLIFIER WITH INTEGRATED CHARGE PUMP CONVERTER October 2016 GENERAL DESCRIPTION FEATURES The IS31AP2031 is a Class-K audio power amplifier with Operates from 2.7V to 4.5V automatic gain control. It drives up to 2.0W (10% 2.0W into an 8 load from a 4.2V supply(10% THD+N) THD+N) into an 8 speaker from a 4.2V VDD supply. 4 gain levels: 12dB, 16dB, 24dB, 27.5dB The IS31AP2031 provides low cost, space saving AGC function solution for portable equipments which need audio Pulse Count Control serial interface output with higher power by boosting up supply voltage. 8kV HBM ESD Its external components just include a few capacitors Thermal and short-circuit protection and resistors (no inductor). Integrated Click-and-Pop suppression circuitry The IS31AP2031 use fully differential design to reduce Available in QFN-20(3mm 3mm) package RF noise. The IS31AP2031 integrates de-pop circuitry to reduce pop and click noise during power on/off or APPLICATIONS shutdown enable operation. The IS31AP2031 also integrates thermal and short circuit protection function. Smart phones IS31AP2031 is available in QFN-20 (3mm 3mm) Cellular phones package. It operates from 2.7V to 4.5V over the PDAs temperature range of -40C to +85C. GPS Portable electronics TYPICAL APPLICATION CIRCUIT VBattery VDD AVIN 10V 10 F 10 F 0.1 F 0.1 F Mode Control SDB CP 100k 4.7 F CN IS31AP2031 CIN RIN 22nF 10k IN+ OUT Differential Input IN- OUT CIN RIN 22nF 10k FS GND 100k Figure 1 Typical Application Circuit (Differential Input) 1 Integrated Silicon Solution, Inc. www.issi.com Rev.B, 10/24/2016 IS31AP2031 VBattery VDD AVIN 10V 10 F 10 F 0.1 F 0.1 F Mode Control SDB CP 100k 4.7 F CN IS31AP2031 CIN RIN 22nF 10k IN+ OUT Single-ended Input IN- OUT CIN RIN 22nF 10k FS GND 100k Figure 2 Typical Application Circuit (Single-ended Input) 2 Integrated Silicon Solution, Inc. www.issi.com Rev.B, 10/24/2016