S-817B30AY-Z2-U

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Introduction

The S-817B30AY-Z2-U is a Linear Voltage Regulator (PMIC) from Activity Semiconductor. This voltage regulator is an integrated circuit (IC) designed to provide a steady output voltage to different types of micro controllers and digital signal processors. The S-817B30AY-Z2-U is a low dropout regulator with a low input voltage and a high output voltage up to 30V. It also features a fast turn-on time, logic compatibility, and pin-to-pin compatibility with other S-817B devices, allowing for easy upgrades and replacements.

Application Field

The S-817B30AY-Z2-U can be used in a variety of applications, including LED driver designs, automotive systems, consumer electronics, and communications. It is well-suited for applications that require a low temperature coefficient, low output impedance, and high current capability. It is an excellent choice for applications such as LCD backlights and portable device power supplies. The low dropout voltage makes it possible to maintain higher output voltages even under light loads.

The S-817B30AY-Z2-U can also be used in industrial, commercial, and military applications. It has a wide operating temperature range of -20 to 85°C, making it a suitable choice for harsh environmental conditions. It is capable of providing stable and reliable power to embedded systems in automotive, transportation, and aerospace applications. The S-817B30AY-Z2-U is also capable of meeting the very stringent load requirements of automotive systems, such as load dump and transient load voltage protection.

Working Principle

The S-817B30AY-Z2-U is a three-terminal linear regulator with an output voltage that is determined by an external resistor divider. The output voltage is also dependent on the input voltage and the current drawn by the device, as well as the temperature of the environment.

The S-817B30AY-Z2-U utilizes a P-Channel FET, which is connected from the output terminal to the ground terminal. When the output voltage drops below a preset level, the P-Channel FET will begin to conduct, providing additional current to the load, thus keeping the output voltage at a steady low level. This process is called low dropout regulation, or LDO.

The S-817B30AY-Z2-U also features thermal shutdown protection and short-circuit protection. If the device senses a temperature that is too high, it will shut down, preventing the device from overheating. Similarly, if the device detects a short circuit condition, it will shut down to protect the device from damage.

Conclusion

The S-817B30AY-Z2-U is a Linear Voltage Regulator (PMIC) from Activity Semiconductor. It is a low dropout regulator with a low input voltage and a high output voltage up to 30V. It has a wide operating temperature range of -20 to 85°C, making it suitable for automotive, transportation, and aerospace applications. The device utilizes a P-Channel FET to provide additional current to the load and also features thermal shutdown and short-circuit protection.

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