MIC3975BMM-TR

The MIC3975BMM-TR is a low-dropout (LDO) linear voltage regulator with an adjustable output voltage. It is used to provide highly accurate and stable positive and negative output voltages at low current levels. The MIC3975BMM-TR is specifically designed for applications where low quiescent current, high PSRR, and low output noise are key considerations. It features high load regulation, fast transient response, low-noise operation, and high PSRR from 10 kHz to 1 MHz.

The MIC3975BMM-TR operates from a single 2.7 V to 5.5 V input voltage and provides a regulated output voltage range from -0.9 V to +4.2 V. It is capable of delivering up to 150 mA of output current. The output voltage is adjustable with a single external resistor, allowing the output to be programmed with a precision of 0.3% max. It has an Enable pin that can be used to turn the device off and provide a low quiescent current consumption.

The device includes a power-on reset feature to ensure proper power-up sequencing. This feature is automatically enabled when the output voltage is greater than 2.3 V and the output current is less than 150 mA. The reset is released after the quiescent current reaches a minimum of 1 µA. This feature is designed to reduce start-up time and ensure proper sequencing of power supplies during system startup.

The MIC3975BMM-TR is designed to work with both ceramic and tantalum capacitors in the output section of designs. The ability to use either type of capacitor helps minimize the bill of materials and board space required for integration. The device includes a thermal shutdown feature to protect itself from over-temperature conditions.

The MIC3975BMM-TR is available in the industry-standard 5-pin SOT-23 package. This package is smaller than many competitive LDOs and is well suited for applications in which space is at a premium. The device is designed to operate over a wide temperature range from -40°C to +125°C. It is available in the Space-Saving SOT-23 package.

The MIC3975BMM-TR is ideal for a variety of applications for which low quiescent current, high PSRR and low output noise is key. It can be used in consumer electronics, battery operated systems, portable or stationary communications equipment, and instrumentation equipment. It is also well-suited for a wide range of voltage regulation tasks in low-noise, space-constrained applications.