Application notes, white papers, technology overviews, and product spotlights for our Enhanced Linear Regulators. Full datasheets and SPICE models are available on request.
OC1D provides unprecedented power transfer efficiency in a very small footprint. The devices employ Polaris Semiconductor’s patented monolithic GaAs-based optocoupler technology, achieving optical isolation with high current transfer ratio and power transfer efficiency over a wide range of drive currents...
Four demonstration boards built with EPC Space pair the radiation-hardened EPC7014 eGaN transistor with Polaris OC1D optocouplers to deliver switching-free step-down, step-up, and negative rails from one design: about 60% efficiency stepping 5 V to 1.8 V versus about 36% for an LDO, less than half the board dissipation, and 35–41 µVRMS output noise. Includes schematics, PCB layouts, and bill of materials...
Reconfigure a BK30-series ELR by pin connection alone into a switching-free inverting regulator: a −1.8 V rail from a positive supply with 0.89 µVRMS output noise (measured at Analog Devices) and more than 100 dB of ripple rejection. Includes schematic, PCB layout, and bill of materials...
Microwave Journal feature (September 2026) introducing the Enhanced Linear Regulator to RF designers: how photovoltaic-output optocouplers give a linear regulator near-switching-level efficiency, the BK300D50E 12 V-to-5 V buck ELR, and a PMI voltage-variable attenuator design-in that eliminated switching spurs and gained more than 30 dB of dynamic range...
Maintain ultra-low noise and efficient linear regulation across USB and battery inputs with a single adaptive ELR. This application note presents an automatic dual-mode switching technique...
Scale ELR output current with simple, low-cost paralleling techniques. Includes op-amp and ballast resistor designs with complete schematics, BOMs, and test data for buck and boost configurations...
Discover a compact, inductor-less power solution for single-cell Li-ion systems. This design demonstrates a switching-free 5V boost and charger architecture that completely eliminates EMI for noise-sensitive electronics...
This application note details the design of a compact, efficient, and switching-free boost regulator using the BT291D50M for single-cell Li-ion applications, all within a tiny 12.5 mm × 7.5 mm solution size...
This white paper introduces Polaris Semiconductor's Enhanced Linear Regulator (ELR) technology, which overcomes the fundamental efficiency limitations of traditional linear voltage regulators while preserving their advantages of simplicity, low component count, and extremely low noise operation...
An up-to-date listing of all Polaris Semiconductor DC step-down voltage regulator products, along with relevant figures of merit for comparison purposes...
This document serves as a high-level technology and product summary for Polaris Semiconductor's innovative voltage regulation solutions. The semiconductor industry faces a significant challenge...
The BK29 series consists of efficient, radiation tolerant voltage regulators with good ripple rejection, low ground current, enable/disable functionality, over-temperature and over-current protection...
The BK30 series consists of extremely low-noise DC voltage regulators with outstanding ripple rejection, over-temperature/current protection, current limit, power-good, enable/UVLO and fast-start-up...
The BT29 series consists of efficient, compact and low-noise DC boost voltage regulators that operate without using switching. The chip provides good ripple rejection performance, low ground current, enable/disable functionality, over-temperature and over-current protection...
The BK19 series consists of efficient, low-noise, and radiation-hard voltage regulators with a space-qualified LDO, good PSRR, low ground current, enable/disable functionality, over-temp protection and over-current protection...
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