IS31AP4915A 20VP-P CHARGE PUMP CERAMIC SPEAKER DRIVER July 2021 GENERAL DESCRIPTION FEATURES The IS31AP4915A features a mono power amplifier Integrated charge-pump power supply - no with an integrated charge-pump power supply inductor required specifically designed to drive the high capacitance of Thermal protection a ceramic loudspeaker. Pop reduction circuitry The IS31AP4915A maximizes battery life by offering 20VP-P voltage swing into piezoelectric speaker high performance efficiency. QFN-16, 4mm 4mm The IS31AP4915A is ideally suited to deliver the high ESD (HBM): 2kV output-voltage swing required to drive ESD (MM): 200V ceramic/piezoelectric speakers. APPLICATIONS The device utilizes comprehensive click-and-pop suppression and shutdown control. The CD/MP3 players IS31AP4915A is fully specified over the -40C to Smart phones +85C extended temperature range and is available Cellular phones in small lead-free 16-pin QFN (4mm 4mm) packages. PDAs Handheld gaming TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit Lumissil Microsystems www.lumissil.com 1 Rev. C, 07/15/2021 IS31AP4915A PIN CONFIGURATION Package Pin Configuration (Top View) QFN-16 PIN DESCRIPTION No. Pin Description 1 C1P Charge pump flying capacitor positive terminal. 2 PGND Power ground, connect to ground. 3 C1N Charge pump flying capacitor negative terminal. 4 PVSS Output from charge pump. 5, 13 NC No connection. 6 SVSS Amplifier negative supply, connect to PVSS. 7 OUT+ Positive output signal. 8 SVCC Amplifier positive supply, connect to PVCC. 9 OUT- Negative output signal. 10 FB Feed back. 11, 15 SDB Shutdown, active low logic. 12 IN Audio input signal. 14 SGND Signal ground, connect to ground. 16 PVCC Charge pump supply voltage, connect to positive supply. Thermal Pad Connect to GND. Lumissil Microsystems www.lumissil.com 2 Rev. C, 07/15/2021