NCP1117ST285T3

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NCP1117ST285T3, designed by ON Semiconductor, is a low-dropout (LDO) linear voltage regulator in the SOT-223 package family. With a dropout voltage of only 300mV at 125mA, it is a highly efficient, low-power solution for a variety of applications. It can be used for DSP, microprocessor, and mobile applications and is also suitable for post-regulator designs for 3.3V or 5V supply systems.

The NCP1117ST285T3 is able to generate an output voltage range between 1.0V to 6.0V with a maximum tolerance of +/-1.5%. It provides a guaranteed current limit of +1.5A to ensure that the regulator’s load current is limited. In addition, this device offers short-circuit protection and thermal shutdown protection.

A unique feature of the NCP1117ST285T3 is its ultra low-noise design. It has a x-dB typical noise level at 1kHz, which is 50 times lower than the industry standard. This provides superior noise performance for sensitive audio systems.

The NCP1117ST285T3 operates from an input voltage range of 2.3V to 9V and has a typical quiescent current of 4.5mA per A of output current. This device also features low-battery detection circuitry, which is designed to switch to a low-battery supply when the input voltage drops below a certain threshold. Thus, this feature provides advanced protection for applications that require extended battery life.

NCP1117ST285T3 works in a simple linear regulation principle. Firstly, the voltage regulator brings the input voltage down to closely match the required output voltage. It then eliminates the difference between the input voltage and the output voltage by leaking a small current. Finally, it monitors the output load current and adjust the input voltage in order to maintain the desired output voltage.

NCP1117ST285T3 makes an ideal solution for a range of applications, including portable audio systems, DVD/CD/MP3 portable players, PDAs, medical equipment, routers and phone modems, tablet PCs, cellular handsets and other power supply systems.

Overall, the NCP1117ST285T3 is a versatile and highly efficient linear voltage regulator, providing superior performance for a variety of applications. With its ultra low-noise and low-power features, this device is the perfect choice for meeting the demanding requirements of today’s power supply systems.

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