MAX17231ETLR+

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MAX17231ETLR+ is an advanced integrated switch-controlled charge-management integrated circuit that combines low-loss power switching, power monitoring, and charge-management functions. Primarily designed for battery-backed systems, this single-chip solution significantly reduces bill-of-material (BOM) count and simplifies board design versus discrete multi-IC solutions. It also maintains battery charge when operating from multiple DC inputs.

The MAX17231ETLR+ application field includes supply rail switch, portable industrial equipment, sealed battery and backup systems, PLCs, Medical Equipment, and UPS systems. It is also used in high-power LED lighting, IoT devices and other embedded solutions.

The MAX17231ETLR+ features Switching Power Management (SPM), a technology which combines power switching, power and battery monitoring, and charge management for system-level optimization. Moreover, this device contains an adjustable output voltage regulator, adjustable overvoltage and undervoltage protection, built-in LED drive control, and Smart Power Shutdown (SPS). Additionally, it includes several features designed to streamline power-system design, improve efficiency, and minimize BOM count.

MAX17231ETLR+ works through a combination of high-efficiency low-on-resistance MOSFETs and low-quiescent-current linear regulators, with auto-compensation of the voltage regulator\'s gain bandwidth. It also provides efficient power switching and load sharing between multiple DC power inputs, while regulating the output power level. Furthermore, the device operates in three operating modes: Active Mode, Standby Mode, and Sleep Mode.

In Active Mode, the MAX17231ETLR+ is able to regulate and manage the power supply with its integrated high-side MOSFET conducting and low-side MOSFET recessed for low input ripple current. In Standby Mode, the device enters into low-power consumption, in which the MOSFETs are recessed for high input ripple current and higher power loss. Finally, in Sleep Mode, the device shuts down completely to minimize power consumption.

To summarize, the MAX17231ETLR+ is a highly integrated, space-savings solution for powering battery-backed and sealed battery systems. It performs all the functions of an integrated power switch-controller, with its integrated low-side and high-side MOSFETs and low quiescent current linear regulators, providing efficient power switching, load sharing between multiple DC power inputs, and charge management. Moreover, it provides the opportunity to improve system efficiencies and minimize BOM costs, while offering three operating modes: Active, Standby, and Sleep.

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