MIC2211-GJBML TR

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The MIC2211-GJBML TR is a voltage regulator, classified as Linear, which operates in a power management integrated circuit (PMIC). It provides an adjustable programmable output with a max range between 0.8V to 5.5V from a 2.5V to 7V input voltage. It is designed to manage the current drawn from a battery to reduce the total quiescent current of the system.

The advantages of the MIC2211-GJBML TR are its small footprint and low dropout voltage. It includes an enable pin, which can throttle the current in the system and reduce the total quiescent current.

The output voltage of the MIC2211-GJBML TR is adjustable by connecting an external resistor divider circuit to the FB (feedback) pin. The resistor divider establishes the output voltage which is sensed by the FB pin. The internal reference voltage of the MIC2211-GJBML TR is 1.200V (typical).

The MIC2211-GJBML TR includes an enable pin (EN) that can be used to place the part in a low power mode for further power savings; when the enable pin is asserted, the part is operational, and when the enable pin is not asserted, the part is in a low power mode.

The MIC2211-GJBML TR is available in an 8-pin 3 x 3 mm QFN package. The MIC2211-GJBML TR is rated to operate over the -40 °C to +85 °C temperature range.

The working principle of the MIC2211-GJBML TR involves a two-transistor architecture. The first transistor is a P-channel MOSFET, which works as a pass device between the input and the output. The P-channel MOSFET enables current to flow from the input to the output whenever the gate voltage is greater than the threshold voltage. The second transistor is an N-channel MOSFET, which works as an error amplifier. The error amplifier generates a voltage drop across the resistor divider connected to the FB pin, to adjust the output voltage to its desired value.

The MIC2211-GJBML TR is used in various application fields including portable electronics, telecom, automotive and industrial supplies, and also as a battery charger. This dedicated linear voltage regulator is a cost-optimized solution due to its small form factor, low power consumption and superior accuracy.

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