LT3030IUFD#TRPBF

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LT3030IUFD#TRPBF is an integrated tiny three-terminal adjustable linear regulator (LREG) from Linear Technology. This device is a low-dropout, low-current linear regulator with very low noise and well-defined current-limiting and thermal shutdown. It is designed to work as a precision voltage source, delivering low-noise bias voltage to power sensitive circuits.

Application Field

LT3030IUFD#TRPBF is widely used in many applications, such as battery-powered systems, portable products, and power starving circuits. It is particularly suitable for medical instrument applications, due to its low dropout voltage, low noise, high accuracy, and very low quiescent current.

LT3030IUFD#TRPBF is suitable for use as a multiple voltage regulator and can be employed in a variety of circuit architectures. The device can also be used as a primary regulator for an inner cell of a battery-powered system or as a secondary regulator for an intermediate or final stage of a DC/DC power supply. It is also suitable for use as an output voltagebuffer in embedded applications.

Working Principle

LT3030IUFD#TRPBF employs a three-terminal design to regulate the voltage at the output terminal with respect to the input voltage. When the input voltage (Vin) is connected to the Vin pin, the current flows from the Vin pin to the GND pin through the on-chip regulator. The voltage at the regulator node (Vreg) is maintained at a precision level with respect to the input voltage or an external reference (Vref). The output voltage Vo is also regulated with respect to this voltage. If the output current level increases or decreases, the voltage at the regulator node (Vreg) will rise or fall respectively, allowing the IC to maintain constant voltage regulation.

LT3030IUFD#TRPBF also provides two protection functions in order to protect it from over current and over temperature. The over current protection (OCP) will be activated when the output current exceeds its rated current and the over temperature protection (OTP) will be activated when the temperature of the IC exceeds its rated temperature. The device has a maximum operating temperature of 125°C.

The device provides excellent transient response and excellent accuracy and noise performance. The output voltage is adjustable with a single resistor, eliminating the need for external reference voltage. The output voltage can range from 0.8V to 5.5V and its output current can reach up to 1A.

Conclusion

LT3030IUFD#TRPBF is a 3-terminal adjustable low-dropout linear regulator from Linear Technology. It is suitable for a variety of applications such as portable products, medical instrumentation, and embedded applications. The device has very low noise, well-defined current-limiting and thermal shutdown, and adjustable output voltage of 0.8V to 5.5V. Its low dropout voltage and low quiescent current makes it an ideal choice for battery-powered systems. The device also has two protection functions, over current protection (OCP) and over temperature protection (OTP), in order to ensure the safety and reliability of the application.

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