NCV8702MX28TCG

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NCV8702MX28TCG is a voltage regulator from the linear PMIC family, designed to provide a variety of voltage levels and to protect systems from overvoltage and overcurrent. It is capable of extended temperature range and adjustable output voltages, making it suitable for a variety of applications.

Overview

NCV8702MX28TCG is a linear, high performance, ultra-low quiescent current voltage regulator with adjustable output voltage and over-current protection. It is designed to operate from a 5V input voltage, with a 0.45V to 35V operating range. The quiescent current can be as low as 300nA and the output current of up to 200mA. The device also features a protected undervoltage lockout for improved power supply stability, as well as thermal protection against over-temperature damage or abnormal operation.

Applications

NCV8702MX28TCG is well suited for a variety of applications and can be used in battery fueled systems, automotive systems, and sensitive industrial equipment. The extended operating temperature range makes it useful in extreme temperature operating environments. Other applications include, but are not limited to, voltage transducers, power converters, dynamic motor control, portables and industrial equipment.

Working Principle

NCV8702MX28TCG utilizes an internal bandgap voltage reference to regulate the output voltage. An internal signal conditioning network converts the 1.25V bandgap reference signal to the desired control signal. A high-bandwidth error amplifier amplifies the output signal that subsequently drives an internal P-channel MOSFET through a current mirror. In over-current protection mode, the current mirror is turned off and any further increase in current would cause CTL voltage to reach the lower threshold. This would activate the overcurrent protection circuit. The output voltage can be adjusted by changing the external resistor from the output pin. A precision resistor connected to the CTRL pin provides a voltage reference mid-way between 0V and 2V to calibrate the threshold levels. The device can also be used as output current limiter, where the output current is determined by the external resistor value.

Advantages

The most notable advantage of NCV8702MX28TCG is its extremely low quiescent current, making it suitable for long term battery operated systems. A wide output voltage range and adjustable input voltage allowing it to be used in a variety of different operating environments. The inclusion of over-current protection, over-temperature protection, and undervoltage lockout provides additional safety and system stability.

Conclusion

NCV8702MX28TCG is a well suited for a variety of applications due to its wide operating temperature range and adjustable output voltage. Its low quiescent current and protection modes make it an excellent choice for portable battery powered systems or any system requiring high reliability and stability. With its adjustable input voltage, NCV8702MX28TCG is capable of supplying various voltage levels while providing long-term operation and over-current protection.

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