MIC37502BU

MIC37502BU Voltage Regulator

The MIC37502BU is a linear voltage regulator from Micrel, Inc. It is a low dropout (LDO) regulator with a wide input voltage range and excellent line/load regulation. It is suitable for a wide range of applications, including post-output line regulation, power supply systems, and low-noise power for various electronic systems.

The MIC37502BU voltage regulator is specifically designed as an adjustable, low-dropout (LDO) linear regulator. It is able to deliver up to 500mA of output current and can support a wide input voltage range of 4.75-36V. The output voltage is adjustable from 1.2V to 29V using two external resistors and consume low quiescent current of just 1.1uA.

The MIC37502BU also offers excellent line/load regulation under all conditions. Its output voltage can be adjusted to be within ±5 mV over a wide input voltage range, making it an ideal solution for low-noise and post-output line regulation applications.

In addition, the MIC37502BU is available in a small, 3-pin SOT-23 package, and has built-in temperature protection and short-circuit protection to ensure a safe and reliable operation in a wide variety of applications.

Applications

The MIC37502BU voltage regulator is suitable for a wide range of applications, including:

• Post-output line regulation
• Power supply systems
• Low-noise power for various electronic systems

Working Principle

The working principle of the MIC37502BU voltage regulator is based on the concept of linear regulation. It works by creating a constant voltage drop between its input and output terminals. The regulator provides a controlled current to the load, maintaining the output voltage at a predetermined level.

The power supply is regulated through a feedback loop. The voltage delivered from the regulator’s output is compared to a reference voltage – the voltage across a series of resistors connected to the regulator’s cathode. When the feedback voltage is low, the regulator increases the output current to bring the output voltage back to the reference voltage. When the feedback voltage is high, the regulator reduces the output current to reduce the output voltage back to the reference voltage.

The MIC37502BU voltage regulator also uses a series of protective features to ensure the safe and reliable operation of the regulator. This includes short-circuit protection, temperature protection, over-voltage protection, and under-voltage protection.

Conclusion

The MIC37502BU is a low-dropout (LDO) linear voltage regulator from Micrel, Inc. It is suitable for post-output line regulation, power supply systems, and low-noise power for various electronic systems. The regulator can deliver up to 500mA of output current and is adjustable between 1.2V to 29V. It also offers excellent line/load regulation and a wide input voltage range. In addition, the voltage regulator is available in a 3-pin SOT-23 package and features various protective features to ensure safe and reliable operation.