IS31AP2031-QFLS2-TR datasheet(1/13 Pages) ISSI

Part #	IS31AP2031-QFLS2-TR

Description	CLASS-K AUDIO POWER AMPLIFIER WITH INTEGRATED CHARGE PUMP CONVERTER

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

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IS31AP2031

Integrated Silicon Solution, Inc. – www.issi.com

Rev.B, 10/24/2016

1

CLASS-K AUDIO POWER AMPLIFIER

WITH INTEGRATED CHARGE PUMP CONVERTER

October 2016

GENERAL DESCRIPTION

The IS31AP2031 is a Class-K audio power amplifier with

automatic gain control. It drives up to 2.0W (10%

THD+N) into an 8Ω speaker from a 4.2V VDD supply.

The IS31AP2031 provides low cost, space saving

solution for portable equipments which need audio

output with higher power by boosting up supply voltage.

Its external components just include a few capacitors

and resistors (no inductor).

The IS31AP2031 use fully differential design to reduce

RF noise. The IS31AP2031 integrates de-pop circuitry to

reduce pop and click noise during power on/off or

shutdown enable operation. The IS31AP2031 also

integrates thermal and short circuit protection function.

IS31AP2031 is available in QFN-20 (3mm × 3mm)

package. It operates from 2.7V to 4.5V over the

temperature range of -40°C to +85°C.

FEATURES



Operates from 2.7V to 4.5V



2.0W into an 8Ω load from a 4.2V supply(10%

THD+N)



4 gain levels: 12dB, 16dB, 24dB, 27.5dB



AGC function



Pulse Count Control serial interface



8kV HBM ESD



Thermal and short-circuit protection



Integrated Click-and-Pop suppression circuitry



Available in QFN-20(3mm × 3mm) package

APPLICATIONS



Smart phones



Cellular phones



PDAs



GPS



Portable electronics

TYPICAL APPLICATION CIRCUIT

VDD

GND

IS31AP2031

IN-

OUT

10 F

CN

IN+

CP

0.1 F

4.7 F

VBattery

CIN

22nF

RIN

10k

CIN

22nF

RIN

10k

Differential

Input

AVIN

10V

10 F

SDB

Mode Control

100k

FS

100k

0.1 F

Figure 1

Typical Application Circuit (Differential Input)

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IS31AP2031-QFLS2-TR Datasheet(PDF) 1 Page - Integrated Silicon Solution, Inc

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