S-816A40AMC-BAPT2U

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The S-816A40AMC-BAPT2U is a device known as a Positive Low Noise Regulator from the field of PMIC - Voltage Regulators - Linear. It is a three terminal regulator that provides a fixed output voltage of 40V and up to 1.2A of output current. It is a low dropout regulator, and the difference between output voltage and input voltage is only 0.9V at 1A output current. This makes it suitable for applications where power efficiency is a concern.

The S-816A40AMC-BAPT2U is an ideal regulator for applications such as motor drives, plasma display panel supplies, digital still cameras, and other power supply circuits that require a low- noise voltage source. It provides an excellent transient response, high output accuracy and low output noise. Its low input to output voltage differential makes it suitable for use with batteries or low voltage sources without compromising performance. It is designed for use in moderate to severe ambient environments and has a maximum junction temperature rating of 125°C.

The S-816A40AMC-BAPT2U utilizes a three-stage power conversions approach. It consists of a linear input regulator, a low dropout linear regulator, and a switching output stage. During the low dropout linear regulation stage, the input current is reduced so that the output voltage does not droop too much. This stage also offers additional noise immunity as the switching frequency of the output stage is determined by the input current. Lastly, the switching output stage provides a high power output voltage conversion allowing efficient utilization of power with minimal noise.

The input stage of the S-816A40AMC-BAPT2U is an ultra- lowdropout (ULDO) linear regulator that provides smooth transition between input and output voltage while providing excellent noise immunity. It features a very low input voltage of only 8V which makes it suitable for battery operated systems. It also accepts a wide input voltage range of 8 to 45V. This makes it suitable for use in applications where wide voltage fluctuations occur such as automotive or industrial applications.

The intermediate stage is a low dropout linear regulator that provides additional noise immunity from the input stage and prevents output voltage droop. This stage has a maximum output current of 1.2A and the typical dropout voltage is only 0.9V. The switching stage is a DC/DC converter that provides wider conversion range, higher efficiency, and high power capability compared to its linear counterparts. The conversion frequency is typically around 320kHz making it ideal for applications with critical EMI or noise requirements. Finally, the output stage provides high efficiency power conversion and offers excellent transient response.

In conclusion, the S-816A40AMC-BAPT2U is a high performance, low noise linear regulator that is suitable for motor drives, plasma display panel supplies, and digital still cameras. It features a ultra-low dropout input voltage of 8V, wide input voltage range of 8 to 45V, and a maximum output current of 1.2A. It also provides excellent noise immunity and high power efficiency. The device is ideal for use in automotive and industrial applications.

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