Maxim Integrated MAX1709ESE+ Step-Up DC-DC Converter

The MAX1709ESE+ is a high-efficiency, low-quiescent-current step-up DC-DC converter from Maxim Integrated, designed to deliver a regulated output voltage from a single-cell lithium-ion (Li-ion) battery or multiple alkaline/NiMH cells. This versatile component is ideal for portable electronic devices where long battery life is paramount, such as handheld computers, medical instruments, and wireless communication devices.

This converter operates over a wide input voltage range of 0.7V to 5.5V, making it suitable for applications that experience wide variations in the power supply voltage. The MAX1709ESE+ can output voltages up to 5.5V, with an adjustable output that allows designers to set the voltage to meet the specific requirements of their application using external resistors.

The device features a high switching frequency of up to 600kHz, which allows for the use of small, low-cost inductors and capacitors, minimizing the overall footprint on the PCB. Additionally, the MAX1709ESE+ incorporates a unique control scheme that provides high efficiency over a wide range of load conditions. This is particularly beneficial for extending battery life in portable devices.

To ensure the safety and reliability of the connected power system, the MAX1709ESE+ includes a range of protective features such as thermal shutdown, overvoltage protection, and a low-battery detector. The low-battery detector can be programmed to indicate when the battery voltage falls below a certain threshold, providing an early warning for battery replacement or recharge.

The MAX1709ESE+ comes in a compact 16-pin Narrow SO package, which is suitable for space-constrained applications. Its high level of integration and small external component count make it an excellent choice for designers looking to maximize power efficiency while minimizing board space.

Overall, the Maxim Integrated MAX1709ESE+ step-up DC-DC converter is a powerful solution for modern portable electronics, combining high efficiency, flexible voltage options, and a compact form factor to meet the rigorous demands of today's battery-powered devices.