SP6641 PFM Boost Converter

The SP6641 is a high-efficiency (83%), low-voltage, low quiescent current (10uA), asynchronous-boost regulator that is ideal for single, dual-cell alkaline or Li ion applications such as pagers, digital still camera, PDAs, and MP3 players. The output remains highly accurate and less noisy over line, load and temperature conditions, letting the designer select less expensive external discrete components, such as ceramic versus tantalum capacitors. The wide voltage input range is 0.9V to 4.5V, and the output range, is factory preset for 3.3V (+/-4%). The quiescent current is only 10uA and the device is capable of sourcing up to 500mA. Designers can control the SP6641 via the shutdown pin.

Pricing and Availability:
The SP6641, packaged in a 5 pin SOT-23, is offered at $0.86 in 10,000-piece quantities.

Sipex Corporation, 22 Linnell Circle, Billerica, MA 01821. Tel: 978-671-1907; Fax: 978-670-9001.