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)

 

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