MAX1760EUB+

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PMIC (Power Management Integrated Circuit) packages are complex solutions consisting of various power and signal conversion components, a MCU (Micro Controller Unit), and a voltage regulator. Among the types of voltage regulators, DC DC switching regulators are used for smart phones, laptops, motor drivers, and other such high-reliability applications. One such DC/DC switching regulator is the MAX1760EUB+.

MAX1760EUB+ Application Field

The MAX1760EUB+ is a single-pin, high-efficiency, synchronous DC/DC step-down regulator with a typical efficiency of 96%. It is designed for applications requiring a low output voltage between 0.6 V and 5.5 V, and provides a high switching frequency. Specifically, the device is suited for computer microprocessors, input voltage regulators, step-up converter circuits, and other applications needing high efficiency.

The MAX1760EUB+ has a single power-supply operation, a thermal shutdown circuit, a soft-start circuit, and an input undervoltage lock-out (UVLO). With a maximum output current of 1.25 A, a 0.8 V dropout voltage, a 28 mA quiescent current, and an adjustable switching frequency of up to 3 MHz, it can meet the exact requirements of low voltage, and provide a reversible power supply conversion with improved power efficiency, faster response time and shorter power-up time.

MAX1760EUB+ Working Principle

The MAX1760EUB+ is a switching regulator, using PMOS and NMOS transistors to control the current flow between its input and output. In normal operation the voltage regulator switches between states in a fixed sequence, regulating the output voltage without allowing any current flow. Since the output voltage is regulated, it does not depend on the input voltage, but instead is always within a fixed range.

When the output current decreases (for example, when the load decreases), the PMOS transistors are switched off, while the NMOS transistors are switched on. This pulls the output voltage closer to the input voltage. Conversely, when the output current increases the NMOS transistors are switched off while the PMOS transistors are switched on, pulling the output voltage away from the input voltage. As the output current increases, the PMOS transistors can be switched on harder, increasing the amount of current moving through them and thus regulating the output voltage.

The MAX1760EUB+ has a high conversion efficiency and offers better transient response than linear voltage regulators. It also operates at a high switching frequency, allowing for more efficient operation. In addition, it provides low noise operation and features adjustable output voltage, low power consumption, and low parts count.

Conclusion

The MAX1760EUB+ is one of the most reliable DC/DC switching regulators available. It is capable of providing a high efficiency of up to 96%, low dropout voltage of 0.8V, soft start and thermal shutdown circuit, input undervoltage lockout and adjustable switching frequency up to 3 MHz. These features make the MAX1760EUB+ an ideal choice for applications requiring high reliability and low voltage supplies.

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