MAX8877EZK25+TGF4

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The MAX8877EZK25+TGF4 is a linear PMIC voltage regulator, specifically designed to provide a regulated output from a 2.7V to 5.5V input source. It features a low quiescent current of 10μA, and its integrated field-effect (FET) switch allows for a low total ground current without compromising on efficiency. This makes it an attractive choice for a variety of applications in the industrial, medical, and consumer markets.

The MAX8877EZK25+TGF4 offers excellent load regulation over line, load, and temperature, as well as a very good output ripple rejection performance. It also provides excellent protection against over-current, over-temperature, and output short-circuit. Its internal soft-start circuitry can reduce transient current peaks during start-up and its low input voltage dropout of less than 350mV ensures continued stable operation with little or no input voltage drop.

The MAX8877EZK25+TGF4 is ideal for use as a main power supply in applications such as RAMs and FPGAs, and even CPU cores, providing stable, ripple-free power. Its integrated low-side switch has an external MOSFET for switching and the device is capable of handling 80mA of output current with an intuitive enable/shutdown logic pin . This makes it suitable for switching many peripherals, such as LED drivers, DC/DC converters, and other logic circuits, while tight output voltage regulation makes it ideal for conditioning small and low-noise low-voltage applications.

The MAX8877EZK25+TGF4 is equipped with over-current protection, Internal Soft-Start and adjustable Power Good characteristics, allowing the regulator to robustly protect the system against fault conditions and abnormal operation. In addition, its high open-loop gain ensures that the device can be designed to meet tight specification requirements.

The MAX8877EZK25+TGF4 works on the basic principle that it compares the output voltage to a reference and adjusts its internal components to keep the two voltages in balance. It does this by utilizing a circuit of transistors, resistors, capacitors, and an onboard voltage reference. When an output voltage is demanded, the reference voltage is compared to the actual output voltage. If it is higher than the output voltage, the AND gate turns on the P-MOSFET to draw more current, lowering the voltage. Conversely, if the voltage is lower than the reference, the AND gate turns on the N-MOSFET, increasing the current flow, raising the output voltage.

The MAX8877EZK25+TGF4 is available in an 8-pin thermally enhanced TDFN package (suffix EN). It operates over the -40ºC to +125ºC temperature range, thus making it suitable for many industrial, automotive, and consumer applications. Overall, it provides an ideal solution for providing clean and stable power in many different power applications.

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