Notebook PCs

Short battery life is still one of the limitations of notebook PCs. A laptop is only functional for as long as it can store enough energy to power it. To enhance and prolong the power management system, a supercapacitor can be used to reduce excessive power load and thus extend the battery’s run time.

CAP-XX supercapacitors can be used to optimize battery utilization by buffering power demand and smooth fluctuating power loads. They can be charged and discharged thousands of times without degradation, offering extra power during peak-load times such as hard drive usage, CD disk writing, or DVD play operations.

CAP-XX supercapacitors are also used in numerous PCMCIA cards powering notebook PCs today. The company is also developing supercapacitors to enable battery swaps while the notebook is in sleep mode. This complementary system will reduce user delays as well as design-in component costs, using existing boost and buck converters as necessary.

Related Documents

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. 1001
Notebook Hot-Swap – Battery (PDF, 94KB)

Application Brief No. 1005
Electrolytic and Tantalum Capacitor Replacement (PDF, 75KB)

Application Brief No. 1006
Pulse Load Applications (PDF, 183KB)

Application Brief No 1013
Effect of Supercapacitor Distance from a Load (PDF, 152KB)

Application Brief No 1014
Powering GPRS/GSM Devices on Mini PCI Cards with CAP-XX Supercapacitors (PDF, 141KB)