New Industry Products

LTC Announces LTC3205 Charge Pump Converter

September 07, 2003 by Jeff Shepard

Linear Technology Corp. (LTC, Milpitas, CA) announced its new 800kHz, low-noise, high-efficiency, step-up/step-down, fractional charge pump converter, the LTC3205, which can drive a 1-4 LED main display, 1-2 LED sub-display plus an RGB display, all in a 4mm x 4 mm QFN package. Each display has digital control with independent dimming and programming via a three-wire serial interface. The device's input-voltage range of 2.7V to 4.5V optimizes it for single-cell, lithium-ion, cellular applications.

Driven from a single-cell, lithium-ion battery (3.6V), efficiencies reach 92% while quiescent current is only 50µA, optimizing battery runtime. The LTC3205 requires only four small capacitors and two resistors to create a tiny (<25mm², <0.8mm high) solution footprint, which is capable of powering the LEDs used in three separate displays.

The LTC3205EUF is available from stock in a 24-lead, 4mm x 4mm, QFN package. Pricing starts at $2.10 each for 1,000-piece quantities.