One IC Generates Three Sub-2V Power Rails from a Li-Ion Cell

Sept. 20, 2007
Design Note 419

Shrinking geometries in IC technology have pushed the operating voltages of today’s electronics well below 2V, presenting a number of design challenges. One common problem is the need for multiple supply voltages: for example, one voltage for a CPU core, another for I/O and still others for peripherals. Sensitive RF, audio and analog circuitry may require additional dedicated quiet supplies, separate from less noise-sensitive digital circuits. As the number of supplies increases, it becomes impractical to use a separate power supply IC for each voltage and special-requirements subsystem. Board area would be quickly consumed by power supplies. One solution to the space crunch is power supply integration, provided by a triple regulator like the LTC®3446—three voltages from a single IC.

Download the full Design Note as a PDF.

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!