MIC3975YMM

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MIC3975YMM is a popular low-dropout (LDO) voltage regulator, which provides precise voltage regulation, low noise and high PSRR level over a wide input and output voltage range. The device has an adjustable output voltage range from 1.2V to 20V and can provide a maximum output current up to 500mA. It is designed for high performance and energy efficient operation in the most challenging applications.

The MIC3975YMM is a three-terminal, adjustable output voltage regulator with very low quiescent current and has a wide operating range of input voltages from 2.5V to 18V. The device is specified over a temperature range of -40℃ to +125℃ and is offered in packages of TO-263 (D2PAK), SOIC-8, and SOT-223. These regulators feature internal current limit, thermal shut-down, and under-voltage lockout protection.

The MIC3975YMM contains a series pass regulator in a TO-263, SOIC-8, or SOT-223 package. It has high PSRR, available in different packages, high output voltage accuracy, low dropout voltage and low quiescent current. The device is stable with very small ceramic capacitors and requires no external control loop compensation.

This device is a low dropout linear voltage regulator designed to drive high current loads from low input voltages. The output voltage range is selectable from 1.2V to 20V with an accuracy of ±2.0%. The device also has an adjustable current limit that can be set to limit the output current to a safe level. The device also has an integrated thermal protection circuit, which ensures that the device shuts down if its junction temperature exceeds the specified limit.

The MIC3975YMM application field is found in automotive systems, industrial and consumer applications, such as motor control, storage, digital appliances and telecommunications systems. Specifically it is used in applications requiring low dropout voltage, high output current, continuous operating voltage and current protection, adjustable output voltage and low quiescent current.

The working principle of the MIC3975YMM is based on a pass-transistor topology, where the output voltage is regulated by controlling the base current of the output pass transistor. The base current is regulated by an error amplifier, which compares the programmed output voltage to the internal reference voltage. The current to the pass transistor is then fed from a constant current source, which is configured by a single resistor. To prevent overcurrent conditions, the output transistor is protected with a current limit protection circuit. The device also features a thermal shutdown circuit to prevent overheating of the package.

In conclusion, the MIC3975YMM is an adjustable output voltage regulator that is specifically designed for high performance and energy efficient operation in the most challenging applications. The device is available in a variety of packages including TO-263, SOIC-8, and SOT-223. The device features a low dropout voltage, high output current and a wide input voltage range. The device also has integrated thermal, over-voltage and over-current protection circuits.

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