LTC Announces LTC3215 Charge Pump/Driver

Linear Technology Corp. (LTC, Milpitas, CA) announced its new LTC3215, a fractional charge pump, high-current white LED driver that delivers up to 700 mA of LED current. Its high-efficiency, multi-mode architecture automatically switches between 1x, 1.5x or 2x boost modes by monitoring the voltage across the LED current source and switching modes only when ILED dropout is detected, enabling the LTC3215 to maximize efficiency (up to 92%) throughout the entire lithium-ion operating range.

A 900 kHz switching frequency and a low external parts count (two flying capacitors, two programming resistors and two bypass capacitors at VIN and CPO) provide a tiny footprint and cost-effective solution, suitable for video and flash applications in camera phones and other portable lighting applications. The LTC3215 employs built-in soft-start circuitry that prevents excessive inrush current during startup. The LTC3215 is available in a low-profile (0.75 mm), 3 mm x 3 mm, 10-lead, DFN package.

The LTC3215EDD is available from stock in a DFN-10 package. Pricing starts at $1.75 each for 1,000-piece quantities.