IS31AP2036
Integrated Silicon Solution, Inc. – www.issi.com
Rev. D, 02/03/2016
1
HIGH EFFICIENCY, CLASS-K AUDIO POWER AMPLIFIER
WITH INTEGRATED CHARGE PUMP CONVERTER
February 2016
GENERAL DESCRIPTION
The IS31AP2036 is a Class-K audio power amplifier with
high efficiency and automatic gain control. It drives up to
2.0W (10% THD+N) into an 8 speaker from a 4.2V V
CC
supply.
The IS31AP2036 integrates advanced high efficiency
charge pump and whole power amplifier efficiency can
be up to 75%. The output power will be maintained in
0.8W, 1.0W and 1.2W.
The IS31AP2036 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 IS31AP2036 use fully differential design to reduce
RF noise. The IS31AP2036 integrates de-pop circuitry to
reduce pop and click noise during power on/off or
shutdown enable operation. The IS31AP2036 also
integrates thermal and short circuit protection function.
IS31AP2036 is available in FCQFN-16 (2mm × 2mm)
package. It operates from 3.0V to 5.0V over the
temperature range of -40°C to +85°C.
FEATURES
Operates from 3.0V to 5.0V
Ultra low output noise floor
Low EMI
-72dB (217Hz) high PSRR
0.05% low THD+N
AGC function
Pulse Count Control serial interface
Output power in 0.8W, 1W and 1.2W levels
Thermal and short-circuit protection
Integrated Click-and-Pop suppression circuitry
Available in FCQFN-16 (2mm × 2mm) package
APPLICATIONS
Smart phones
Cellular phones
PDAs
GPS
Portable electronics
TYPICAL APPLICATION CIRCUIT
VCC
PVCC
SDB
GND
IS31AP2036
IN-
A1
A2
OUT
D4
OUT
B4
D3
C2~C4
4.7 F
A4
C2N
B1,B2
IN+
A3,B3
0.1 F
220pF
100k
VBattery
CIN
15nF
R
IN
3k
CIN
15nF
R
IN
3k
Differential
Input
4.7 F
C1N
C1
2.2 F
C1P
D2
C2P
D1
2.2 F
1nF
1nF
Mode Control
Figure 1 Typical Application Circuit (Differential Input)
