Fairchild Semiconductor Announces FAN5902, RF Power DC-to-DC Converter
The FAN5902 is the industry’s smallest power management solution for the designers of 3G handsets and wireless datacards. The FAN5902, RF Power DC-to-DC converter, is packaged in a 12 bump, 0.5mm pitch CSP package and operates at 6MHz with a reduced size 0.5uH chip inductor, saving space and component costs. This converter helps to extend talk-time by up to 40 minutes in 3G handsets by adapting the voltage supply level of the 3G RF power amplifier according to the RF power sent through the antenna, enabling higher power efficiency for a wide range of antenna power levels. The FAN5902 also addresses the key problem of overheating in the RF power amplifier, especially at high battery voltage. Since the FAN5902 scales down the RFPA supply voltage, reducing its heating by 20 to 40 percent, the heat sink can be shrunk and the component density can be increased, reducing weight, cost and size…
FAN5902
(Picture: Fairchild Semicnductor)
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