MIC5207-3.3YM5-TR Datasheet/PDFThe MIC5207-3.3YM5-TR is a low-dropout voltage regulator (LDO) from Micrel Inc., specifically designed to provide ultra-low-voltage standard 3.3V output with a minimum number of external components. This regulator has been created predominately for use in data communications, office-automation, and communication systems that need reliable, monolithic CMOS LDO power. This article will explore the application field and working principle of the MIC5207-3.3YM5-TR.
Applications
The MIC5207-3.3YM5-TR is an ideal voltage regulator for applications that need reliable performance and low power consumption in a small, space-saving package. It is designed to operate over an extended temperature range from -40°C to +85°C, making it suitable for applications that expect to be exposed to high levels of ambient heat or cold. The 5 mA minimum output current allows it to be used in applications where a current level of that magnitude is necessary.
Due to its low noise in power supply lines, the MIC5207-3.3YM5-TR can be used where noise sensitivity is a concern. Its low dropout voltage also makes it a good option for applications that require voltage regulation down to near-zero output levels. It also has a low-standby current that makes it a great choice for portable devices or applications where battery life is a priority.
Features
The MIC5207-3.3YM5-TR offers an impressive range of features that make it the perfect low-dropout voltage regulator for a variety of applications. It has a temperature range of -40°C to +85°C and a maximum current capacity of 1.0A. The dropout voltage is -75mV, making it ideal for low-voltage applications. The output voltage is adjustable from 1.35V to 7V, making it suitable for a broad range of applications. Additionally, the MIC5207-3.3YM5-TR features a low-noise design, low-standby current, fast load-transient response, and guaranteed thermal and current protection.
Working Principle
The MIC5207-3.3YM5-TR is a linear voltage regulator employed in power management applications to maintain a steady output voltage regardless of input parameters such as line voltage fluctuations and input transient. The linear topology consists of an error amplifier, an output amplifier, and a series pass element, typically an N-channel field effect transistor (NFET). The LDO is current-based, which means the pass element limits the output current to a certain amount. The error amplifier compares the output voltage to a reference voltage and adjusts the gate voltage of the pass element accordingly. The output buffer then amplifies the signal and the output voltage is proportional to the reference voltage.
The MIC5207-3.3YM5-TR features protection features such as an over-temperature protection, reverse current protection and current-fault protection that protect the device from over-current and reverse voltage conditions. Additionally, it has an extremely low-noise design that results in low output noise, making it suitable for noise-sensitive applications.
Conclusion
The MIC5207-3.3YM5-TR is an ultra-low dropout voltage regulator (LDO) from Micrel Inc. that offers an impressive range of features, making it ideal for applications that require voltage regulation down to near-zero output levels. It has been designed to provide reliable performance and low power consumption in a small, space-saving package. The linear regulator working principle makes use of an error amplifier, an output amplifier and a series pass element to keep the output voltage steady regardless of input conditions. In addition, the MIC5207-3.3YM5-TR features several protection features that protect the device from over-current and reverse voltage conditions, making it a reliable and safe option for a wide range of applications.