Provides total current with 91%-95% efficiency at an ambient temperature of 85°C
Linear Technology offers high operating efficiency and temperature in a 9mm x 15mm x 4.92mm BGA package
It was announced that a 10A step-down µModule® (micromodule) regulator with a low rise of 2.375VIN to 5.5VIN (product name: LTM4648) is being released.

The LTM4648 features a built-in 5V boost converter capable of driving the gates of N-channel MOSFETs at low VIN power, eliminating the need for 5V to 12V power rails and reliance on auxiliary regulators, thereby improving efficiency and simplifying system design. Applications include point-of-load (PoL) conversion in 3.3V power buses or battery input systems, as well as in telecom, medical, industrial, aviation, and portable test equipment.

The LTM4648 provides maximum current (10A, VOUT and VIN full range) when operating at ambient temperatures from 0°C to 85°C, requires no heatsink or airflow, and does not require current derating. Half power delivery is possible under 110°C (TJMAX=125°C) conditions. The µModule regulator operates with a maximum efficiency of 91% (1.5VOUT at 3.3VIN or 5VIN, 10A). 95% efficiency is achieved when converting 10A to 3.3VIN, 2.5VOUT.

In addition, the output voltage can be adjusted in the range of 0.6V to 5V. The LTM4648, equipped with a differential remote sensing amplifier to compensate for voltage droop caused by circuit board trace impedance, controls the load voltage with ±1.5% precision under full line, load, and temperature (–40ºC to 125ºC) conditions.

It provides input and output clocks suitable for multiphase operation among multiple devices capable of precisely sharing current for loads up to 40A. Multiphase operation reduces input and output ripple as well as numerous input and output capacitors.

It can be synchronized with an external clock over a frequency range of 400kHz to 750kHz. By supporting Burst Mode® operation for maximum conversion efficiency under light loads and Pulse Skip operation for lower output voltage ripple, users have options to optimize circuit performance as needed. The LTM4648 allows output voltage tracking for multi-rail sequencing within the system. For load-side protection, the LTM4648 provides output overvoltage and overcurrent protection.

The LTM4648 E and I grades guarantee operation over a temperature range of –40ºC to 125ºC. It is priced at $13.25 per unit in 1,000-unit quantities. For more information, please refer to www.linear.com/product/LTM4648.