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LTM4618: 4.5V to 26.5V Input 6A DC/DC uModule Regulator with Tracking & Phase-Lockable Frequency Synchronization in 135mm2 FootprintMILPITAS, CA – July 21, 2010 – Linear Technology Corporation introduces the LTM4618, a 6A DC/DC uModule® Regulator, which includes the inductor, MOSFETs, DC/DC regulator, input and output bypass capacitors and supporting circuitry in a 2.3g, 9mm x 15mm x 4.32mm LGA package. 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 overvoltage and short-circuit protection, as well as guaranteed ±1.75% maximum total output DC error. Applications for the LTM4618 include medical systems, ATCA cards, single-board computers, plus industrial and networking equipment.
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 -40ºC to 125ºC. For more information, visit www.linear.com/4618.

Photo Caption: 6A DC/DC uModule Regulator in 9mm x 15mm LGA


Summary of Features: LTM4618

• Complete 6A Power Supply in 9mm x 15mm x 4.32mm LGA
• 4.5V to 26.5V Input Range
• 0.8V to 5V Output Range
• Output Voltage Tracking, PLL, Overvoltage & Short-Circuit Protection
• ±1.75% Maximum Total Output DC Error

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