REG103UA-3.3G4

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The REG103UA-3.3G4 voltage regulator is part of the Linear PMIC series of voltage regulators. It is engineered to provide flexible power supply solutions for a variety of applications in cost-effective and efficient ways.

The REG103UA-3.3G4 provides a compliant 3.3v output voltage with a user specified current limit of up to 1A (5A max). It works as an adjustable linear voltage regulator, with built-in protection circuits for over-current, over-voltage and thermal shut down. This makes the REG103UA-3.3G4 particularly well-suited for application in communication, datacom and industrial equipment with features that support a safe and reliable power management.

The REG103UA-3.3G4 input voltage range can span from 2.6 V to 6 V with a target output voltage range of 0.8 V to 3.4 V. Regulation voltage is regulated by a single primitive feedback circuit for the exact desired regulation voltage. It is non-inverting and maintains a low noise output voltage with a minimum line regulation and a very low output voltage ripple. Other features include very high stability and temperature compensation, current limit and over temperature protection.

The REG103UA-3.3G4 provides a wide variety of applications solutions. The device is suitable for providing power rails in bridge circuits, switching converters or other low voltage or current applications. Its wide input voltage range and adjustable voltage allows the regulator to be used in numerous power applications. Its low noise output and high repeatability over temperature set the device apart from other solutions.

The working principle and main features of the REG103UA-3.3G4 are simple. The output voltage is accurately regulated with a single primitive feedback circuit consisting of two resistors, one from the output pin to ground, and the other from the output pin to an adjustable voltage divider. The voltage divider adjusts the reference voltage and can be adjusted to achieve the desired output voltage. The current limit is set by series resistance connected between the output and GND pin, to maintain the output current within the specified limit. Overcurrent protection is provided by an integrated comparator which monitors the output current and shuts down the device if it exceeds a preset limit, and when the overcurrent is removed the device automatically resumes normal operation.

The REG103UA-3.3G4 intelligent current-limiting system helps to protect the device, minimize power loss and extend device life in applications such as datacom, communication and industrial equipment. Its wide input voltage range, low noise and excellent temperature stability, makes it an ideal choice for powering sensitive components. Its low voltage, current-limiting, and thermal and over current protection features make it suitable for a wide range of demanding power management applications.

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