Linear Technology Corp. (LTC, Milpitas, CA) announced its new LTC3416, a 95-percent efficient, synchronous buck regulator, which uses a constant-frequency, current-mode architecture. The LTC3416 also offers voltage tracking for easy supply sequencing. It can deliver up to 4 A of continuous output current at voltages as low as 0.8 V from a thermally enhanced TSSOP-20 package.
The LTC3416 operates from an input voltage of 2.25 V to 5.5 V, making it suitable for both single-cell, lithium-ion or nickel-metal hydride applications, as well as more general-purpose, fixed rail systems. Its switching frequency is programmable from 300 kHz to 4 MHz via a single resistor, ensuring optimal efficiency and allowing the use of tiny, low-cost capacitors and inductors with less than 1.5 mm profile. Constant frequency operation also keeps switching noise out of critical wireless and xDSL frequency ranges, making it suitable for xDSL modem, cellular basestation and automotive applications.
The LTC3416 is available from stock in a 20-lead, thermally enhanced, TSSOP package. Pricing starts at $5.20 each in 1,000-piece quantities.
