Embedded Computing Design

Aldrick S. Limjoco

Senior Manager, Power Architect, Power Solutions Group

Analog Devices

Aldrick S. Limjoco currently works as a senior manager, power architect under the Power Solutions Group at Analog Devices Philippines. Since joining ADI in 2006, he has taken on diverse engineering roles focused on power management, including design evaluation, product applications, and applications research. Aldrick currently holds three U.S. patents and has authored/co-authored technical publications on the topics of switching regulator output ripple measurement techniques, & novel techniques.

Articles 1 - 1
Analog & Power

Optimizing LDO Headroom Control with a Current Referenced Switching Regulator Design—Part 1: Noise Sources, Impact, and Strategies - Blog

December 02, 2025
Kyosuke Shimo Ino Lorenz Ardiente Aldrick S. Limjoco Analog Devices  

This article explores the various sources of noise in switching regulators and their impact on different analog signal chain components. It highlights several noise mitigation strategies, including the use of low dropout (LDO) regulators as effective postregulation filters. The article also shows a range of solutions from Analog Devices (ADI) that deliver optimized LDO efficiency across varying load conditions and output voltages, while pairing good power supply noise rejection. One solution offers a new method for LDOs to control the headroom provided by switching regulators with current reference architectures.

Articles 1 - 1