The SGM019 series by SGMicro presents a line of low-power, low-noise, and low-dropout CMOS linear voltage regulators, catering to diverse voltage requirements with nine fixed voltage outputs ranging from 1.2V to 3.3V, alongside an adjustable variant spanning 1.2V to 5.0V. Offering an ideal solution for battery-powered systems, these regulators boast very low quiescent and shutdown currents, enabling efficient power management. With a maximum output current of 300mA and an impressively low dropout voltage of 270mV, they facilitate reliable performance even in demanding applications such as RF systems, thanks to their ultra-low output noise and high PSRR.
Pinout Configuration and Identification:
The pinout configuration of the SGM2019 includes inputs for regulator input, ground, shutdown, reference-noise bypass, and output, with the adjustable voltage version featuring an additional pin for setting the output voltage. Identification of the variant is facilitated by specific markings on the device.
Key Features and Specifications:
Key features encompass a wide operating input voltage range, precise output voltage regulation, thermal shutdown protection, and output current limit. Available in compact SC70-5 and SOT-23-5 packages, they offer flexibility and ease of integration into various electronic designs.
Equivalents and Alternatives:
Equivalents and alternatives to the SGM2019 include AP2112, LD2985, TPS73633, TLV713, LP2985, AMS1117, MIC5225, MIC5205, and RT9193, providing options for different design requirements.
Application Circuit and Use Cases:
The application circuit demonstrates simplicity, requiring minimal components for input and output filtering, with additional provisions for noise reduction in the form of bypass capacitors. Typical applications range from cellular telephones to handheld instruments, offering versatility across a spectrum of portable and battery-powered devices.
Detailed technical specifications and application guidelines can be referenced from the SGM2019 datasheet, facilitating seamless integration into electronic designs. Additionally, 2D CAD drawings provide dimensional insights for custom footprint creation and PCB or CAD modeling.
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