Linear unveils triple-output DC/DC uModule

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Edited by the Electronicstalk editorial team Mar 23, 2010

Linear Technology has introduced the LTM4615, a complete triple-output DC/DC uModule regulator system.

The LTM4615 contains two 4A switch mode regulators and one 1.5A very-low-dropout (VLDO) linear regulator in a 15 x 15 x 2.8mm surface-mount package.

Linear Technology has introduced the LTM4615, a complete triple-output DC/DC uModule regulator system.

Linear Technology has introduced the LTM4615, a complete triple-output DC/DC uModule regulator system.

The output voltage for each of the two switching regulators is adjustable from 0.8 to 5V and the third output is adjustable from 0.4 to 2.6V, making it suitable for powering the new generation of lower-voltage multiple-rail 65nm and 45nm digital ICs.

The LTM4615's versatile configuration provides a compact DC/DC system, capable of regulating three outputs (4A, 4A, 1.5A) or two outputs (8A, 1.5A) while operating from one, two or three input supplies.

The device's low (2.8mm) package height prevents thermal shadowing and allows smooth air flow over components in its vicinity.

For systems that rely on FPGAs or ASICs requiring multiple voltage rails, the LTM4615 reduces the DC/DC bill of materials, shrinks board space, lowers profile and reduces design time while offering a high-reliability solution in a thermally efficient land-grid-array (LGA) package.

The LTM4615 includes all the components for devising a triple-output point-of-load regulator: inductors, capacitors, DC/DC controllers, compensation circuitry and power switches (MOSFETs).

All are encapsulated and protected within the plastic surface-mount LGA package.

The LTM4615 is guaranteed to have only +/-2 per cent total DC output error (switch-mode regulators) and +/-1 per cent error (VLDO), which include errors introduced by the reference voltage as well as line and load regulation.

As a current-mode device with high switching frequency, the LTM4615 has a very fast transient response to line and load changes while operating with high stability with a variety of output capacitors.

The switching regulator efficiencies are greater than 90 per cent, depending on the voltage and current conditions.

The device supports output-voltage tracking.

Safety features include short-circuit and over-temperature protection.

The LTM4615 has an internal operating temperature range from -40 to 125C.

The device is RoHS compliant, with the ability to be soldered with Pb-free (lead-free) and Pb-based solder during board assembly.

Find out more about this article. Request a brochure, download technical specifications and request samples here.
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