New Industry Products

LTC Announces New LT1940 DC/DC Converter

September 08, 2002 by Jeff Shepard

Linear Technology Corp. (LTC, Milpitas, CA) announced the LT1940, a dual-output, constant-frequency, step-down switching regulator in a thermally enhanced, 16-pin, TSSOP package. The new converter operates from an input voltage of 3.6V to 25V enabling it to regulate a wide variety of power sources such as four-cell batteries, 5V logic rails, unregulated wall transformers, lead-acid batteries and distributed power supplies.

The LT1940 can deliver up to 1.4A of output current from each of its two independent channels at output voltages as low as 1.25V. The converters are synchronized to a single 1.1MHz oscillator and are switched out-of-phase to minimize input-ripple current. The 1.1MHz constant frequency minimizes both switching noise and the size of the external components making it suitable for noise-sensitive applications such as wireless and xDSL applications.

The LT1940 is available from stock in a 16-lead, thermally enhanced, TSSOP-16E package. Pricing starts at $3.70 each for 1,000-piece quantities.