MAX17428GTJ+

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The MAX17428GTJ+ is an ultra-low quiescent-current linear voltage regulator (LDO) designed to deliver an extremely low supply current of 0.2µA at no-load conditions. This device is designed for applications where an ultra-low supply current and a low output voltage are required in low-voltage designs. The MAX17428GTJ+ is suitable for providing an extremely low voltage, such as a start-up voltage, in consumer, battery-powered, and medical applications.

The MAX17428GTJ+ is an adjustable LDO that is able to deliver up to 500mA of output current to a load. An adjustable LDO is a kind of linear regulator with a variable output voltage. The output voltage of the MAX17428GTJ+ is determined by an external resistor divider and can be adjusted within 0.8V to 5.5V range. The MAX17428GTJ+ also offers a high-accuracy output voltage of ±3%. Other features of this device include a fast start-up time, reverse-battery protection, and current-limit protection.

The MAX17428GTJ+ uses a PNP pass transistor to regulate the output voltage. This PNP provides a high output impedance and allows a low resistance drop at high currents. The output voltage is regulated by a low-leakage comparator, which compares the feedback voltage to a reference voltage. The reference voltage is determined by the external resistor divider that is connected to the reference pin. This device also features a P-channel enhancement-mode MOSFET, which is connected between the output and the load.

In addition, the MAX17428GTJ+ has low output voltage noise and ripple and a PSRR of -57dB at 10kHz. This feature enables it to be used in noise-sensitive applications, such as battery-powered systems. The MAX17428GTJ+ also includes thermal warning and protection circuitry, which provides an indication when the device is under thermal overload. This device is available in a thermally enhanced 8-pin TDFN package.

The MAX17428GTJ+ is a special-purpose linear voltage regulator designed to provide an efficient and reliable solution for applications requiring ultra-low quiescent current and a low output voltage. The adjustable output voltage and the low output voltage noise make this device ideal for battery-powered, consumer, and medical applications. The internal thermal warning and protection circuitry ensure the reliable operation of the device in extreme situations.

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