Date: 10/06/2010

2.2W Class D boosted speaker amplifier for battery operated portable devices

Maxim has unveiled the MAX98500, a boosted 2.2W Class D amplifier designed for battery-operated portable devices. This device consists of a boost converter to provide a constant output power and thus a louder output over a wide range of supply voltages. The MAX98500 is equipped with a battery-tracking automatic-level-control (ALC) circuit that limits the maximum output swing as the supply voltage drops. ALC helps to avoid clipping and prevents the battery voltage from collapsing, which otherwise might cause a reset of the system. It is suggested for cell phones, portable media players, PDAs, netbooks, and other battery-operated audio applications.

The MAX98500 operates from 2.5V to 5.5V supply range, and is operational down to 2.3V. The amplifier delivers 2.2W of output power (8ohms, VDD = 3.6V, THD+N = 10%) at a total efficiency of 85% (typ).

Package:
(2.1mm x 2.1mm), 16-bump wafer-level package (WLP) with a 0.5mm-lead pitch

Operating temperature range: -40degC to +85degC

Price: starts at US$0.72

Availability: Now

For more information visit: www.maxim-ic.com