ADI Introduces Tiny μ Module Step-Up Regulator for Low-Voltage Optics

On April 10, 2018, Analog Devices (ADI) announced the introduction of the Power by LinearTM LTM4661, a low power step-up μModule® regulator in a 6.25mm x 6.25mm x 2.42mm BGA package. Only a small number of capacitors and a resistor are needed to complete the design, and the solution footprint is less than 1cm2 (single-sided PCB) or 0.5cm2 (double-sided PCB). The LTM4661 contains a switch DC/DC controller, MOSFET, inductor, and support components. The LTM4661 operates from an input supply range of 1.8V to 5.5V and can continue operation at voltages as low as 0.7V after startup. The output voltage can be set from 2.5V to 15V with a single resistor. The device's small, thin, thin package and wide input and output voltage range make it ideal for a wide range of applications including optical modules, battery-powered devices, battery-based backup systems, and biasing for power amplifiers or laser diodes Voltage and small DC motors.

The LTM4661 is capable of continuously supplying 4A current from 3.3VIN to 5VOUT transitions and 0.7A continuously from 3.3VIN to 12VOUT. The LTM4661 uses synchronous rectification to provide up to 92% conversion efficiency (3.3VIN to 5VOUT). The switching frequency is 1MHz, and it can also be synchronized to an external clock with a frequency range of 500kHz to 1.5MHz. The quiescent current in Burst Mode operation is only 25μA, which extends battery run time. For applications that require the lowest possible operating noise, forced continuous mode or external synchronization mode minimizes possible switching noise interference.

Relevant Diodes LTM46 series products

Author：Brittany Antonia （The author of article owns the copyright.）