SG117K

Introduction

SG117K is an low-dropout regulator (LDO) ICs designed for powering processor cores in energy-saving distributed power sources with stable voltage output, accurate current limit and low-power consumption. It is available in an ultra-small SOT223 package.

Application Field

The SG117K is designed to fit high-performance, low power semiconductor device power applications. It is ideal for powering processor cores in energy-saving distributed power applications with stable voltage output, accurate current limit and low-power consumption.

The working voltage range is from 1.2 V up to 36 V with ±1.5% accuracy and current limit is 0.3 A. The SG117K provides a smooth, fast transient response and very low dropout voltage (<450mV at full load).

The SG117K is a highly recommended solution for low voltage needs, since it provides stable voltage output and accurate current limit, which helps to avoid unnecessary power loss and overheating. Furthermore, it also provides high quality-assured, robust power supply source.

Working Principle

The SG117K implements a low-dropout (LDO) regulator topology to provide a constant and stable output voltage at different loadings. It has a reference voltage input, a voltage feedback network, an error amplifier and a power transistors.

The reference voltage is produced by a bandgap circuit, which is stable, accurate and temperature-independent. The feedback from the output is compared to the desired reference voltage by the error amplifier. The output voltage is regulated by adjusting the base drive of the power transistor.

The SG117K uses an advanced proprietary noise-reduction circuit to effectively reduce the output ripple voltage, ensuring a very clean output voltage even with changing high-frequency loading. It also offers a tight line/load regulation and low dropout voltage (< 450mV) under full load, allowing a lower-power supply operation.

Conclusion

The SG117K is a low-dropout (LDO) regulator ICs designed for powering processor cores in energy-saving distributed power applications. It provides stable voltage output, accurate current limit and low-power consumption. Its wide input voltage range and low dropout voltage make it suitable for applications with low voltage requirements, such as processor cores in energy-saving distributed power applications.

It implements a low-dropout (LDO) regulator topology, with an advanced proprietary noise-reduction circuit to reduce output ripple voltage. The SG117K is a highly recommended solution for low voltage power applications.