The MP2030 is a very low dropout, dual supply linear regulator. The use of two supplies allows the BIAS to control an NMOS device. The NMOS device supplies power to the load via the IN. In this way the input supply can be just above the desired output, yet still provide very good regulation performance due to the higher bias supply. The BIAS operates from a 2.5V to 5.5V input and regulates the output voltage to as low as 0.9V, and as high as 3.8V. The MP2030 can supply up to 3A of load current with a typical dropout voltage of 150mV. The BIAS runs the internal reference and drive circuitry, while the output current comes directly from the IN for high efficiency regulation. The low bias current of 220uA makes the MP2030 ideal for use in battery-powered applications. The BIAS can be directly applied from the battery while IN is powered from the high efficiency buck regulator. This will reduce the output noise and decoupling capacitor. Other features of MP2030 include thermal overload and current limit protection, power good indicator, stability with ultra low ESR ceramic capacitors as low as 1uF, and fast transient response. The MP2030 is available in 10-pin QFN (3mm x 3mm), and in QFN (5mm x 5mm) packages.
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