Wireless

Mobile Phones

Competitive pressures have driven mobile phone manufacturers to achieve superior power management results – best battery cycle life, standby performance, shortest charge time, smallest size and minimal weight. But mobile phones have high power demands when transmitting data. During transmission, pulse power trains cause battery voltage to sag and efficiency to drop, ultimately shortening the the battery’s useful life.
CAP-XX supercapacitors optimize battery utilization by buffering power demand and smooth fluctuating loads, thus increasing mobile talk time and battery longevity. These devices operate in extreme temperature conditions, and can be charged/discharged thousands of times without degradation. CAP-XX supercapacitors also enable a simple GSM phone solution with excellent talk-time using standard AAA or AA alkaline batteries enabling new applications such as 911 phones where cost and long shelf life are critical.
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. 1004
Battery Run-Time Extension and Low Temperature Boost (PDF, 161KB)
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)

PCMCIA and Compact Flash

Wireless devices capable of delivering 2.5G, 3G, 802.16 and 4G communication services face a critical shortage of power. Pulse transmissions generally exceed the power limitations of wireless modem devices such as PCMCIA, CompactFlash®, USB and mini PCI cards, leading manufacturers to seek components that consume less power and even add batteries to the products.
CAP-XX supercapacitors actually enable battery elimination while providing the high current pulses needed for wireless transmission. These small, thin devices permit low temperature operation and reduce EMI noise to improve transmission reliability and signal quality.
Related Documents
Application Note No. 1002
Start-Up Current-Limiters for Supercapacitors in PDAs and Other Portable Devices
(Rev 2.1) (PDF, 312KB)
Application Note No. 1003
The Supercapacitor Solution to GPRS and Other Pulsed Loads on
Compact Flash and PC Cards (PDF, 665KB)
Application Brief No. 1005
Electrolytic and Tantalum Capacitor Replacement (PDF, 75KB)
Application Brief No. 1006
Pulse Load Applications (PDF, 183KB)
Application Brief No. 1009
Powering GPRS Class 10 Devices on PCMCIA Cards with CAP-XX Supercapacitors (PDF, 139KB)
Application Brief No. 1010
Powering GPRS/GSM Devices on Compact Flash Cards with CAP-XX Supercapacitors (PDF, 141KB)
Application Brief No 1011
Powering GPRS Class 12 Devices on PCMCIA Cards with CAP-XX Supercapacitors (PDF, 138KB)
Application Brief No 1013
Effect of Supercapacitor Distance from a Load (PDF, 152KB)
Evaluation Board User Manual No. 1003
Supercapacitor Evaluation Board User Manual for PC Cards (PDF, 517KB)
Evaluation Board User Manual No. 1004
Supercapacitor Evaluation Board User Manual for CF Cards (PDF, 507KB)

Ruggedized PDAs

Ruggedized PDAs face a critical shortage of power, particularly at low temperatures. The high pulse power needed for the radio frequency transmissions or new display technologies such as OLED can strain existing batteries. This overload situation quickly lowers voltage and triggers premature shut-down (leaving spare energy in the battery), thus decreasing overall communications time and the useful life of the battery.
A supercapacitor can eliminate this problem. Working in tandem with the battery, the supercapacitor discharges its power during peak loads and recharges between peaks, provides the support power needed to operate the PDA for much longer periods, enables memory back up, battery chatter recovery, and battery hot-swapping capabilities, and reduces excessive power load to extend the battery’s life cycle.
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. 1004
Battery Run-Time Extension and Low Temperature Boost (PDF, 161KB)
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)
Evaluation Board User Manual No. 1002
(PDF, 302KB) Supercapacitor Evaluation Board User Manual for PDAs (PDF, 302KB)

Wireless Sensor Networks


Wireless sensor networks enable long-term environmental monitoring or object tracking through large numbers of unconnected sensor nodes. Because of their large deployment, sensor nodes are expected to be inexpensive to manufacture, small in size, and able operate for many months.
While standard consumer AA or coin-style batteries keep sensor nodes active for up to a year, CAP-XX supercapacitors can work with the battery configuration to extend the life of each node by providing peak power during transmissions as needed while easily conforming to form factor limitations. Supercapacitors are also an excellent power storage solution solar cells, thermoelectrics, and other alternate power solutions for wireless sensor devices.
Related Documents
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)