Fairchild Semiconductor Provides Power Management Solutions for Designers
Fairchild Semiconductor offers the industry's smallest power management solution, the FAN5902, for 3G handsets and wireless data card designers in a 12-pitch 0.5mm pitch CSP package. Operating at 6MHz and using a smaller (0.5uH) chip inductor saves space and reduces component cost. The converter adjusts the voltage of the 3G RF power amplifier based on the RF power level sent through the antenna to achieve higher energy efficiency over a wider range of antenna power levels, helping to extend the talk time of 3G handsets by up to 40 minutes. In data-enabled mobile phones and smartphones, especially in suburban areas and areas with poor signal coverage, battery power consumption of up to 100 mA can be saved. This voltage management feature increases power by 20 to 30%, significantly extending turn-on time and allowing 3G handsets to run more processor applications. In addition, the FAN5902 delivers up to 800mArms of current, capable of supporting excessive RFPA current due to extreme antenna mismatch and 50mΩ bypass FET on-resistance, and is capable of operating at 2.7V low battery voltage. FAN5902 also solves the problem of common RF power amplifier overheating at high battery voltage. By reducing the RFPA supply voltage, the RF power amplifier thermal energy can be reduced by 20% to 40%, thereby reducing the size of the heat sink and the component spacing, helping to reduce the weight of the product. Reduce size and reduce costs. Fairchild will continue to offer a wide range of solutions, including increased efficiency, board space savings, signal fidelity and simplified design, bringing innovation to mobile phone designs. Related products include the 800mA/1000mA3MHz step-down converter FAN5355, designed for powering core, graphics and application processors for mobile applications, to meet the stringent requirements of handset applications for footprint, wide efficiency range and performance; The FAN5361 is a 6MHz 600mA step-down converter that provides the best balance between efficiency and size. KNM1L Series Moulded Case Circuit Breaker
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