Digital still cameras (DSCs) require a substantial amount of energy delivered at very high power for the switch-on, zoom, autofocus, and image capture stages of operation. Additonally, new technologies such as white LED feature lower power consumption but have high peak-power needs. These demands place an extreme load on batteries, quickly lowering the voltage, triggering premature shut-down (even though the battery still has stored energy), and thus restricting the number of images that can be recorded.
A supercapacitor can eliminate this problem. Working together with the battery, the supercapacitor discharges its power during peak loads and recharges between peaks, providing the power needed to operate the camera up to 200% longer while extending the useful life of the batteries.
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. 1006
Pulse Load Applications (PDF, 183KB)
Application Brief No 1012
Battery Run-Time Extension for Digital Still Cameras (PDF, 117KB)
Application Brief No 1013
Effect of Supercapacitor Distance from a Load (PDF, 152KB)