REG101UA-3G4

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The REG101UA-3G4 is a 3A low dropout linear voltage regulator (LDO) with a voltage drop that can be as low as 0.35V. It is designed for low-noise applications in both noisy and demanding environments. This LDO ensures high accuracy and fast transient response while providing excellent noise immunity in harsh electromagnetic environments. It also features a wide input voltage range, low quiescent current, and built-in protection features. This makes it applicable in a wide range of applications where stability, accuracy, and performance are required.

The REG101UA-3G4 is primarily used in telecommunications and industrial equipment, such as ADSL/VDSL modems, wireless boards, power adapters, medical devices, GPS receivers, and automotive infotainment systems. It can also be used in DC-DC converters, point-of-load converters, and set-top boxes. Another major application is in powering MCUs and FPGAs as well as providing backup power for low-power devices. Additionally, it is used to supply rail voltage levels for memory devices, analog and digital systems, and motor controllers.

This LDO provides a regulated output voltage of 3.3V, 4.5V, 5V, 6V, 7V, 8V, 9V, 10V, 11V, 12V, 13V, 14V, 15V, 16V, 24V, and 28V. All these outputs are adjustable within specified ranges, and the device can provide up to 3A of continuous output current. It also boasts an input voltage range between 2.3V and 28V, with line regulation of 30 mV at a load current of 0.05A. The maximum quiescent current it draws is only 4mA. Therefore, this regulator is ideal for systems with low standby power requirements. Moreover, it supports a wide temperature range from -40°C to +85°C.

In terms of protection features, the REG101UA-3G4 has short-circuit protection, overload protection, and overvoltage protection. The device also incorporates a reverse-blocking feature. This feature helps it to sustain any voltage transient on the output side beyond the specified output voltage range. It also has an anti-ringback feature which protects against reverse current surge and helps to protect sensitive nodes.

The REG101UA-3G4 operates by regulating the input voltage to the required output voltage and current. Incoming energy is absorbed by internal components, such as inductors, capacitors and resistors, as well as internal shunts and zener diodes. The voltage and current of the incoming energy is then regulated using a control circuit, which ensures that the output voltage and current remain consistent regardless of the input voltage. The output voltage is generated by the difference between the input and output voltages. The internal components of the device inherently dissipate some of the excess energy, thus providing a constant regulated output voltage.

The REG101UA-3G4 is a low-cost, easy-to-use, high-performance voltage regulator with the features and flexibility necessary to handle a wide range of application needs. With its adjustable output voltage, 3A output current, and excellent load and line regulation, it is an ideal solution for powering microcontrollers and other low-power devices in various applications. Its ability to handle harsh electromagnetic fields as well as its built-in protection features make it reliable and durable in any environment.

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