MAX745EAP+T

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Introduction

MAX745EAP+T is a high-performance, charge-pump, buck regulator available in a tiny 6-pin SOT23 package and designed to provide up to 500mA of output current. It accepts input voltages from 2.1V to 5.5V and is capable of converting a 1.8V to 5.5V input voltage to a stabilized 1.8V output voltage.

Application Field

Due to its wide input voltage range, small size and high level of efficiency, MAX745EAP+T is ideally suited for many battery-powered applications. These include cellular phones, Bluetooth headsets, set-top boxes, PDAs, portable media players, digital still cameras and other portable devices. The device is also used in 3.3V and 5V systems, where a regulated voltage supply is required from a single-cell Li-ion or other battery.

Working Principle

The MAX745EAP+T utilizes a unique switching architecture, providing high efficiency and fast transient response. The device includes an internal charge pump for its power connection, as well as an advanced adaptive on-time control architecture to optimize efficiency. It also includes a low-dropout (LDO) regulator for the power circuit, eliminating the need for an external capacitor. The MAX745EAP+T operates in either a constant frequency or a pulse-skipping mode, allowing the device to maintain high efficiency even under light load conditions.

Conclusion

The MAX745EAP+T is an ideal solution for providing up to 500mA of output current in a compact 6-pin SOT23 package. Its wide input voltage range, high efficiency levels and fast transient response make it an excellent choice for battery-powered applications. Additionally, its internal charge pump and advanced adaptive on-time control architecture enable the device to maintain high efficiency even under light load conditions, making it an excellent choice for any application requiring a regulated voltage supply from a single-cell Li-ion or other battery.

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