New Industry Products

LTC Debuts LTC4059A Linear Battery Charger

April 26, 2004 by Jeff Shepard

Linear Technology Corp. (LTC, Milpitas, CA) introduced its new LTC4059A, a fully integrated, linear battery charger in a tiny package that can charge a single-cell, lithium-ion battery at 900 mA without overheating itself or the surrounding components. Applications include digital still cameras; portable point-of-sale and diagnostic equipment; as well as cell phones, PDAs and USB-equipped hand-held devices.

The LTC4059A features a patented thermal regulation scheme preventing the junction temperature of the IC from exceeding 115 °C; a small 2 mm x 2 mm DFN package; a 4.2 V, 0.6 percent accurate float voltage; 5 percent charge accuracy; operation from input supplies ranging from 3.75 V to 8 V; a supply current of 10uA during shutdown; and battery drain current less than 1 µA.

The LTC4059A is rated for operation from -40 °C to +85 °C. Pricing starts at $1.45 each in 1,000-piece quantities.