Maxim Integrated MAX8840ELT45+ Low-Dropout Linear Regulator

The Maxim Integrated MAX8840ELT45+ is a high-performance, low-dropout (LDO) linear regulator designed to deliver a continuous 150mA of output current. This compact and efficient power management solution is ideal for space-constrained applications, offering a fixed output voltage of 4.5V with excellent accuracy and stability.

Featuring a low dropout voltage of just 130mV at full load, the MAX8840ELT45+ ensures efficient operation even when the input voltage is close to the output voltage, making it perfect for battery-operated devices where maximizing battery life is critical. The device operates over a wide input voltage range from 2.5V to 6.5V, providing versatile power supply options for various applications.

One of the standout features of the MAX8840ELT45+ is its low quiescent current, which is typically only 90µA. This characteristic minimizes power consumption when the device is in idle mode, further extending battery life in portable electronics. Moreover, the regulator includes a shutdown feature that reduces the quiescent current to less than 1µA, thereby conserving power when the device is not in use.

The MAX8840ELT45+ is designed with built-in protection features to ensure reliable operation under adverse conditions. It includes thermal overload protection and short-circuit protection, safeguarding the device and the load from potential damage caused by excessive heat or current. Additionally, the regulator has an over-current limiting feature that prevents it from supplying dangerously high currents.

This LDO regulator is available in a tiny, 6-pin thin SOT23 package, which is highly suited for portable applications where space on the PCB is at a premium. The small footprint of the MAX8840ELT45+ makes it an excellent choice for mobile phones, PDAs, wireless peripherals, and other handheld devices.

In summary, the Maxim Integrated MAX8840ELT45+ LDO regulator offers a combination of high performance, low power consumption, and compact size, making it an optimal power management solution for a wide array of portable and space-sensitive applications.