Digital music players record and play music compressed into the MP3 format and can carry 1,000 or more songs in memory, giving large music libraries true portability. As with many other mobile appliances, these thin, palm-sized devices are pushing the limits of existing battery technology with their increasing power demands and upcoming use of wireless transmission and converged functionality.
While DMPs operate on standard rechargeable, AA or AAA batteries, CAP-XX supercapacitor solutions can provide the power bursts needed for reading a disk drive or enabling wireless transmission. This extends the playing time by supporting the battery operations, and enables the design of smaller, lighter devices.
Application Note No. 1001
Current-Limit and Low-Voltage Lockout Circuit for Portable Devices (PDF, 120KB)
Application Note No. 1002
Start-Up Current-Limiters for Supercapacitors in PDAs and Other Portable Devices
(Rev 2.1) (PDF, 312KB)
Application Brief No. 1005
Electrolytic and Tantalum Capacitor Replacement (PDF, 75KB)
Application Brief No 1013
Effect of Supercapacitor Distance from a Load (PDF, 152KB)