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Tiny 5V/30mA boost converter saves 20% board space

Posted: 08 Jan 2008 ?? ?Print Version ?Bookmark and Share

Keywords:boost converter? board space? portable device?

Fairchild Semiconductor has launched what it touts to be the smallest 5V/30mA adaptive charge pump boost converter in a low profile, compact 1.21mm x 1.21mm WL-CSP package, saving over 20 percent board space compared to alternate solutions.

For USB enabled devices needing a 5V I/O rail, Fairchild's FAN5665 provides an optimal "quick fix" solution. The converter can also be used to drive keypad LEDs in portable devices. The FAN5665 features a low 0.625mm (max) profile and does not require a bulky inductor, offering a slim solution for network cards or other thin portable applications.

Using switch reconfiguration and fractional switching techniques, the FAN5665 achieves up to 92 percent efficiency and can support an input voltage range of 2.9-5.5V. In addition, the switches are pre-buffered to provide a low in-rush current, which results to minimized noise on the supply line. In addition, by not requiring an inductor, EMI noise is reduced, which could potentially save system designers time during the final stages of system verification.

The FAN5665 utilizes Pb-free terminals and has been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020. All of Fairchild's products are designed to meet the requirements of the European Union's RoHS directive.

Pricing for the FAN5665 is at 82 cents each for 1,000-unit quantities.




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