APPLICATION NOTE 3174

Selecting Power Management for Cellular Handsets


Abstract: New generation cellular handsets are smaller than previous generations, capable of PDA functions, delivering e-mail, instant messaging, and web browsing on a larger, more colorful display. Some models include FM radios, MP3 players, and digital cameras.

Even with increased functionality, consumers expect enduring battery life without an increase in size. Cramming more into a smaller handset while draining less power has propelled power-management design into a critical role. To meet the challenge, analog IC manufacturers have developed smaller, higher performance power-supply solutions.