IS31AP4915A

IS31AP4915A 20VP-P CHARGE PUMP CERAMIC SPEAKER DRIVER August 2013 GENERAL DESCRIPTION The IS31AP4915A features a mono power amplifier with an integrated charge-pump power supply specifically designed to drive the high capacitance of a ceramic loudspeaker. The IS31AP4915A maximizes battery life by offering high performance efficiency. The IS31AP4915A 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 IS31AP4915A 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  20VP-P voltage swing into piezoelectric speaker  QFN-16, 4mm × 4mm  ESD (HBM): 2kV ESD (MM): 200V APPLICATIONS  CD/MP3 players  Smart phones  Cellular phones  PDAs  Handheld gaming TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit Integrated Silicon Solution, Inc. – www.issi.com Rev. B, 08/08/2013 1 IS31AP4915A PIN CONFIGURATION Package Pin Configuration (Top View) QFN-16 PIN DESCRIPTION No. Pin 1 C1P 2 PGND 3 C1N 4 5, 13 PVSS NC 6 SVSS 7 OUT+ 8 SVCC 9 OUT- 10 11, 15 12 14 16 FB SDB IN SGND PVCC Thermal Pad Description Charge pump flying capacitor positive terminal. Power ground, connect to ground. Charge pump flying capacitor ne...