IS31AP4915-QFLS2-TR Datasheet, PDF (1/10 Pages) Integrated Silicon Solution, Inc – 20VP-P CHARGE PUMP CERAMIC SPEAKER DRIVER

IS31AP4915
20V_P-P CHARGE PUMP CERAMIC SPEAKER DRIVER
September 2012
GENERAL DESCRIPTION
The IS31AP4915 features a mono power amplifier
with an integrated charge-pump power supply
specifically designed to drive the high capacitance of
a ceramic loudspeaker.
The IS31AP4915 maximizes battery life by offering
high performance efficiency.
The IS31AP4915 is ideally suited to deliver the high
output-voltage swing required to drive
ceramic/piezoelectric speakers.
The device utilizes comprehensive click-and-pop
suppression and shutdown control. The IS31AP4915
is fully specified over the -40°C to +85°C extended
temperature range and is available in small lead-free
16-pin QFN (4mm × 4mm) packages.
FEATURES
 Integrated charge-pump power supply - no
inductor required
 Thermal protection
 Pop reduction circuitry
 20V_P-P voltage swing into piezoelectric speaker
 QFN-16, 4mm × 4mm
APPLICATIONS
 CD/MP3 players
 Smart phones
 Cellular phones
 PDAs
 Handheld gaming
TYPICAL APPLICATION CIRCUIT
220pF
200K
33nF ^5K
2.5 - 5.5V
1 uF
IN
SVDD
PVDD
SHUTDOWN
100K
SD
SGND
PGND
OUT +
FB
OUT -
SVSS
PVSS
10ohm
10K
10K
10ohm
10 uF
10 uF
Figure 1 Typical Application Circuit
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev.B, 09/11/2012