MIC68400-0.8YML TR

MIC68400-0.8YML TR Application Field and Working Principle

MIC68400-0.8YML TR is a linear voltage regulator device produced by Microchip Technology. It is part of the PMIC - Voltage Regulators - Linear series. This device is equipped with the features of fast transient response, low noise, and low quiescent current. It utilizes high-side current limiting, current foldback, and uses on-chip folded cascode transistors, enabling it to provide a stable output current that exceeds 500 mA. It also features a wide input voltage range and a low dropout voltage.

Features

• Wide input voltage range: 2V to 7V
• Low dropout voltage
• On-chip folded cascode transistors
• Fast transient response and low noise
• High-side current limiting and current foldback
• Capable of delivering up to 500 mA output current

Application Fields

The MIC68400-0.8YML TR device finds applications in numerous areas such that includes a wide range of consumer electronics, automotive, industrial and medical applications. It can be used for, but not limited to, power supplies, DC/DC converters, analog and digital signal processing, and power management. Some general uses of the device would include powering of ASICs, FPGAs, LEDs, microprocessors, and power amplifiers.

Working Principle

The MIC68400-0.8YML TR utilizes a two-stage topology, which includes a high-side switch and an external pass transistor. The high-side switch functions like a switch, and its switch node is the input of the regulator. When the voltage across this node is greater than the reference voltage, it turns on and limits the current until the voltage reaches the reference. The external pass transistor is used to divide the input voltage into a regulated output voltage.

The device also features on-chip folded cascode transistors that provide extremely fast switching. The fast switching minimizes output voltage deviation during transitions, enabling the device to deliver high-speed and accurate regulation. In addition, the device uses current limit circuitry to prevent overloading and also provides enhanced output current foldback which allows safe operation during overloads. The device is also equipped with an on-chip voltage reference, providing a precise output voltage.