buck regulator

Linear Technology announces the LTC3564, a high efficiency, 2.25MHz, synchronous buck regulator that can deliver up to 1.25A of continuous output current from a 2mm x 3mm DFN or ThinSOT package. Using a constant frequency current mode architecture, the LTC3564 operates from an input voltage range of 2.5V to 5.5V, making it ideal for Li-Ion battery inputs as well as 3.3V or 5V inputs for point-of-load applications. It can generate output voltages as low as 0.6V, enabling it to power the latest generation of low voltage DSPs and microcontrollers.

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To help portable design engineers bring power-efficient, small-form-factor products to market, Freescale Semiconductor has added the MC34726/27 DC/DC buck regulators to its analog portfolio optimized for space-constrained battery-powered applications.Manufactured with Freescale's SMARTMOS™ technology, the MC34726/27 devices are designed to enhance efficiencies at light loads and to improve standby time in mobile applications where Li-Ion or Li-Polymer batteries are the main power source.

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MILPITAS, CA March 24, 2008 Linear Technology Corporation announces the LTC3523/-2, a combination of a 600mA (ISW) synchronous boost and a 400mA (IOUT) synchronous buck regulator in a 3mm x 3mm QFN-16 package. Both the boost and the buck regulators switch at 2.4MHz in the LTC3523-2 (1.2MHz for the LTC3523), and use current mode, synchronous topologies. The LTC3523/-2 operate from an input voltage range of 1.8V to 5.5V, making them appropriate for single cell Li-Ion/Polymer or dual-cell alkaline/NiMH applications. In particular, the combination of a buck and a boost makes it ideal for dual-cell alkaline applications, in which a processor 3.3V I/O rail and a 1.2V (or lower) VCORE rail are required.

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MILPITAS, CA March 18, 2008 Linear Technology announces the Military Plastic grade (MP-grade) version of the LTC3414. The LTC3414 is a high efficiency, 4MHz synchronous buck regulator using a constant frequency, current mode architecture. It can deliver up to 4A of continuous output current at voltages as low as 0.8V from a thermally enhanced TSSOP-20 package. It operates from an input voltage of 2.25V to 5.5V, making it ideal for both single cell Li-Ion, or NiMH applications, as well as more general purpose fixed rail systems.

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New NCP312x devices are ideal for power regulation in set-top-boxes, LCD-TVs, cable modems and other consumer applications

PHOENIX, Ariz. March 6, 2008 - ON Semiconductor (Nasdaq: ONNN), a global leader in efficient power semiconductor solutions, today introduced the NCP312x family of dual output pulse width modulation (PWM) buck regulators that offer unique auto-tracking and sequencing capabilities. Featuring integrated MOSFETs that deliver 2 amperes (A) (NCP3120, NCP3122) or 3 A (NCP3121, NCP3123) output current with switching frequency up to 2.2 megahertz (MHz), the new devices are ideal for a variety of consumer applications including set-top-boxes (STB), LCD-TVs and cable modems.

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MILPITAS, CA March 13, 2008 Linear Technology announces the LTC3670, a 400mA, 2.25 MHz, synchronous buck regulator and two 150mA LDOs packaged in a 2mm x 3mm DFN. The LTC3670's switching regulator and both LDOs are adjustable down to 0.8V, offering a very compact triple output converter for handheld applications. Its input voltage range of 2.5V to 5.5V makes it ideal for single cell Li-Ion powered applications. The adjustable outputs are ideal for powering I/O, memory and core voltages of the latest DSPs and microcontrollers while each channel offers an independent enable pin.

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