MAX9788

MAX9788 19-0710; Rev 3; 5/08 EVAALVUAAILTAIOBNLEKIT 14VP-P, Class G Ceramic Speaker Driver General Description The MAX9788 features a mono Class G power amplifier with an integrated inverting charge-pump power supply specifically designed to drive the high capacitance of a ceramic loudspeaker. The charge pump can supply greater than 700mA of peak output current at 5.5VDC, guaranteeing an output of 14VP-P. The MAX9788 maximizes battery life by offering highperformance efficiency. Maxim’s proprietary Class G output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers. The MAX9788 is ideally suited to deliver the high output-voltage swing required to drive ceramic/piezoelectric speakers. The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9788 is fully specified over the -40°C to +85°C extended temperature range and is available in small lead-free 28-pin TQFN (4mm x 4mm) or 20-bump WLP (2mm x 2.5mm) packages. Cell Phones Smartphones MP3 Players Applications Personal Media Players Handheld Gaming Consoles Notebook Computers Features ♦ Integrated Charge-Pump Power Supply—No Inductor Required ♦ 14VP-P Voltage Swing into Piezoelectric Speaker ♦ 2.7V to 5.5V Single-Supply Operation ♦ Clickless/Popless Operation ♦ Small Thermally Efficient Packages 4mm x 4mm 28-Pin TQFN 2mm x 2.5mm 20-Bump WLP Ordering ...