LP5912Q0.9DRVTQ1

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LP5912Q0.9DRVTQ1 is a Micropower Adjustable Linear Voltage Regulator designed specifically to address the needs of processor and microcontroller-based systems. It has outstanding power saving features, such as a quiescent current of only 90nA, which is 80% lower than the average quiescent current of a typical low-dropout (LDO) voltage regulator. The LP5912Q0.9DRVTQ1 operates over an input voltage range from 1.8V to 5.5V and delivers a fixed output voltage from 0.78V to 4.125V with an adjustment range of up to 12V.

The LP5912Q0.9DRVTQ1 isideally suitable for powering processors, microcontrollers, memories, MMCs/SD cards, ASICs, and any other low voltage logic devices. It is a flexible solution which can provide an adjustable output voltage for applications that require higher input voltage for operation. The LP5912Q0.9DRVTQ1 is available in a 4-pin SOT-23 package and has an industry standard pin-out for easy integration.

LP5912Q0.9DRVTQ1 Application Field: This micropower adjustable linear voltage regulator is typically used in applications where low output voltage, low quiescent current, high input voltage, and efficient operation are desired. It can be used for designing systems which are battery-powered and/or solar-powered. It can also be used in automotive systems such as energy conversion, powertrain and electronic control systems.

LP5912Q0.9DRVTQ1 Working Principle: The LP5912Q0.9DRVTQ1 operates by employing a voltage divider circuit that draws just a few microamps of current. This current is used to control feedback regulation and adjust the output voltage of the regulator. The operational amplifier in the voltage divider circuit is optimized to minimize power consumption and ensure a very low quiescent current. The voltage divider and operational amplifier, in conjunction with the output circuitry, ensure stable operation over a wide temperature range.

The output voltage of the LP5912Q0.9DRVTQ1 can be easily adjusted to any value between 0.78V and 4.125V. This is done by externally connecting two resistors to form a voltage divider between the input voltage and ground. The output voltage is then set by adjusting the ratio of the two resistors.

The LP5912Q0.9DRVTQ1 also offers several features including internal shutdown, short-circuit protection, thermal protection, and soft-start. The internal shutdown feature allows the regulator to be shut down remotely using a logic signal. Short-circuit protection maintains the regulator\'s output voltage and current even during an overload condition. Thermal protection and soft-start ensure the safe operation of the regulator by ensuring that the output current does not exceed certain levels and that the output voltage is ramped up slowly at start-up respectively.

The LP5912Q0.9DRVTQ1 also employs a specialized Voltage Tracking architecture to maintain the output voltage when there is a sudden change in input voltage. This VTracking feature is beneficial in providing efficient operation and improved stability, while also saving power by decreasing the input current requirements and output voltage ripple.

The LP5912Q0.9DRVTQ1 is an outstanding micropower adjustable linear voltage regulator for processor and microcontroller-basedsystems. Its low quiescent current, wide input voltage range and temperature range, adjustable output voltage, and other features make it an ideal choice for demanding applications.

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