MIC39501-1.8WU

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The MIC39501-1.8WU is a high-efficiency, high-accuracy, low-dropout voltage regulator (LDO) with a robust and integrated architecture. It can provide up to 1.8W of power, which makes it an ideal choice for a variety of applications in the field of power management. This device can provide low noise, good thermal performance and low power consumption, making it a reliable and cost-effective solution for powering low-voltage applications.

The MIC39501-1.8WU has a wide input voltage range of 4.25V to 18V and can output a steady voltage of 1.8V. It offers both overload protection and thermal overload protection to make sure the device runs safely and accurately. It also features an ultra-low dropout voltage (DOR) of less than 100mV. This device can provide high ripple rejection, over 60dB at single-to-differential mode, and low noise, which is suitable for ripple-sensitive applications. The MIC39501-1.8WU also features a high maximum output current of 1.8A and an adjustable output voltage range of 0.9V to 2V. With its high efficiency and low quiescent current of 5µA at no load, it is an ideal device for power management in always on and sleep modes.

The working principle of the MIC39501-1.8WU is simple and straightforward; it uses a precision voltage reference, a pair of error amplifier, an internal voltage divider, a P-channel and N-channel MOSFET, an external series pass capacitor, an external current sense resistor and an internal peak current limiting circuit to regulate the output voltage. The precision reference voltage is compared with the voltage at the feedback pin of the device. If the voltage drops, the error amplifier will increase the gate voltage of the P-channel transistor, causing the current to increase and reducing the output voltage. If the voltage rises, the error amplifier will decrease the gate voltage of the N-channel transistor, causing the current to reduce and increasing the output voltage.

The MIC39501-1.8WU is a versatile and reliable power management solution for a wide range of low-voltage applications, such as telecom systems, digital consumer electronics, industrial processes, portable and handheld devices and battery powered equipment. It can be used with a wide range of other power supply components and devices, such as linear regulators, switching regulators, DC to DC converters, LED drivers and fault protection devices. With its high efficiency and low quiescent current, it is a great choice for always on applications and sleep modes.

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