MCP1824T-3302E/OT

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The MCP1824T-3302E/OT is a low drop-out (LDO) linear voltage regulator by Microchip Technology. It is part of the broad portfolio of fixed and adjustable LDO regulators, which provide excellent power stabilization, load regulation and low EMI performance. Ideal for low output voltage requirements, this tiny package offers a maximum dropout voltage of just 3.2mV at 1A current, with a fast transient response time of just 15μs.

This versatile device is commonly used for wide range of applications, including industrial control and low current analog stages, digital and DSP power sourcing, energy harvesting, automotive systems and general-purpose local power. With its large selection of voltage variants, it is also an ideal solution for PoE (Power over Ethernet) ecosystems.

The MCP1824T-3302E/OT is a basic-type adjustable regulator device, operating from an input voltage of up to 6.5V. It can support output voltages between 0.8V and 1.50V, based on the selected variant. It also integrates a power-saving mode, enabling low quiescent current operation (< 2μA of quiescent current at no load). The device further information provided by its line regulation, load regulation, thermal protection, short-circuit protection, reverse current protection and input voltage protection features. A high power supply rejection rate (PSRR) is also offered, up to 50dB at a 10kHz frequency.

In terms of its workings, the MCP1824T-3302E/OT is a linear voltage regulator which uses a series pass element to regulate output voltage. The series pass element is composed of a N-channel MOSFET connected to the input voltage source, in series with a resistor (R1) connected to the output voltage. A control circuit modulates the current through the MOSFET, in response to the deviations between the input and output voltages, thus maintaining a stable output voltage. As the current passes through R1, some of it is lost due to its resistance, thus increasing the MOSFET’s resistance and reducing its current conduction. This in turn increases the voltage drop across R1, thus reducing the output voltage.

In summary, the MCP1824T-3302E/OT is an ideal solution for a wide range of applications offering low dropout voltage, excellent load regulation and fast transient response. It can supply up a maximum output current of 1A, while integrating excellent line and load regulation features and safety features such as input voltage protection and reverse current protection. It effectively works as a basic-type adjustable regulator, with a series pass element composed of a N-channel MOSFET connected to the input voltage source, in series with a resistor (R1) connected to the output voltage. This device is an excellent choice for a variety of applications such as industrial control, automotive systems and PoE (Power over Ethernet) ecosystems.

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