MIC49150-0.9BR

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MIC49150-0.9BR is a high-efficiency, low-voltage linear regulator, classified as one of the many PMIC – Voltage Regulators - Linear. It is primarily designed to provide ±0.9V reference voltage for biasing of high-side and low-side circuits.

The MIC49150-0.9BR Volatile Memory linear regulatoris equipped with a wide input voltage range (1.7V to 24V) for efficient power delivery. It is capable of delivering up to 1A of continuous load current with a 10mV drop in output voltage, resulting in high power delivery efficiency. The consequent low power dissipation is suitable for high-temperature applications and ensures reliable operation at a lower junction temperature. The MIC49150-0.9BR also includes Feed Forward Current Limiters, which enable continuous compliance with the I/O specifications. Other features include Overvoltage Shutdown for reliable operation.

The MIC49150-0.9BR is designed to provide high precision with low noise, making it suitable for a variety of RF, power management and audio applications. It has an internal voltage reference accuracy of ±0.9V. It also has a low noise level of 180 µVrms, which protects sensitive analog and digital circuits. Additionally, it has an adjustable line regulation of ±2 mV at ±1A of loading.

The MIC49150-0.9BR offers high reliability in industrial, automotive and space applications. It has an operating temperature range of -40°C to +125°C, and is characterized for use in automotive temperatures. The device is ESD protected to ±4 kV for contact discharge and ±2 kV for air discharge when in its intended application. In addition, the output voltage is protected from reverse power surges up to 30V.

The working principle of the MIC49150-0.9BR is relatively simple. Its internal power transistor acts as a constant current source, sourcing current through an external resistor. The output voltage is determined by the following formula:Vref = VIN × R/R+Rinn.

The internal error amplifier monitors the output voltage and adjusts the reference voltage accordingly. The power transistor then adjusts its output current in order to maintain the output voltage within the stated accuracy. Additionally, the resistor values can be adjusted to adjust the output voltage.

In summary, the MIC49150-0.9BR is a low-voltage linear voltage regulator, designed to provide a precision ±0.9V reference voltage with low noise and high power delivery efficiency. It is suitable for a wide range of industrial, automotive and space applications and is protected from reverse power surges. The device is equipped with feed forward current limiters, low noise levels and an adjustable line regulation.

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