MAX1822EPA+

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The MAX1822EPA+ chip is a switching regulator designed for use in portable battery-powered applications that require either step-up or step-down voltage conversion. It is part of a family of regulators from Maxim Integrated that provide high efficiency, low power consumption and wide input voltage range. It is suitable for a range of applications from single cell Li-ion battery chargers to multi-cell energy storage systems.

The MAX1822EPA+ is a step-up/step-down switching regulator that can convert any input voltage from 2.5V up to 6V to a fixed output voltage of 3.3V. It offers both high efficiency and low power consumption due to a synchronous rectified switch configuration and current mode control. The MAX1822EPA’s quiescent current is less than 50uA, and the maximum output current is 18mA.

The MAX1822EPA+ incorporates an 800kHz switch with an integrated logic control and synchronous rectifier to provide high efficiency and fast transient response. The device offers a 6-pin SOT23 package. The device achieves high efficiency operation by using internal power MOSFETs and by detecting current levels in the output stage to minimize power dissipation.

MAX1822EPA+ has built-in over-voltage protection, under-voltage lockout with hysteresis, current limitation, thermal shutdown and output voltage accuracy. It also has wide input voltage range, allowing for operation from two AA-sized cells or two AAA-sized cells with full output voltage accuracy.

The MAX1822EPA+ combines a switching regulator, inductor and protection circuitry into a simple 6-pin package, making it a cost-effective solution for many portable applications. This includes mobile phones, digital cameras, MP3 players, PDAs, and navigation devices. The device’s high efficiency minimizes power consumption, extending battery life in these types of applications.

In summary, the MAX1822EPA+ is an easy-to-use, low-cost, and highly efficient switching regulator designed for battery-powered applications. It has a wide input voltage range and can offer up to 18mA of output current. The device also has built-in protection features such as over-voltage protection, under-voltage lockout with hysteresis, current limitation, thermal shutdown and output voltage accuracy. With its small size and high efficiency, the MAX1822EPA+ is an ideal choice for many portable applications.

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