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DC/DC µModule regulator offers output volt tracking

Posted: 29 Jul 2010     Print Version  Bookmark and Share

Keywords:µModule regulator  voltage tracking  PLL  DC/DC 

Linear Technology Corp. rolls out the LTM4618, a 6A DC/DC µModule regulator in a 2.3g, 9mm x 15mm x 4.32mm LGA package, which includes an inductor, MOSFETs, DC/DC regulator, input and output bypass capacitors and supporting circuitry. The LTM4618 is suitable for applications that include medical systems, ATCA cards, single-board computers, plus industrial and networking equipment.

The LTM4618 features output voltage tracking for systems that need to sequence multiple rails for proper power up and down, and 250kHz to 780kHz fixed frequency PLL capability for noise-sensitive applications that require the switching frequency of the regulator to be a set value.

For low voltage loads such as Vcore of FPGAs and processors, the LTM4618 includes safety features such as output over-voltage and short-circuit protection, as well as guaranteed ±1.75 per cent maximum total output DC error.

The LTM4618's current-mode topology and its high switching frequency operation deliver very fast transient response to line and load changes without sacrificing stability. The device operates from 4.5V to 26.5V input supplies and regulates an output voltage from 0.8V to 5V. Burst Mode operation or pulse-skipping mode enable selection of either the highest operating efficiency or lower output ripple at light loads. The LTM4618 is rated for operation from -40°C to 125°C. Pricing starts at Rs.527.69 ($11.30) each for 1,000-piece quantities.

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