IR3081AMTRPBF

Series:	XPhase™
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Processor
Current - Supply:	11mA
Voltage - Supply:	9.5 V ~ 14 V
Operating Temperature:	0°C ~ 100°C
Mounting Type:	Surface Mount
Package / Case:	28-VFQFN Exposed Pad
Supplier Device Package:	28-MLPQ (5x5)
Base Part Number:	IR3081AMPBF

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IR3081AMTRPBF is a highly integrated power management integrated circuit (PMIC) designed for Raspberry Pi applications. It integrates several power management functions, including system power supply, sequential switching of power supplies and voltage regulation. It is also designed to provide current and voltage feedback outputs for improved system stability and reliability.The IR3081AMTRPBF is a highly integrated 4-phase power supply controller IC used in Raspberry Pi applications. It incorporates an efficient 16-bit microcontroller core and provides flexible hardware and software functionality in order to optimize system power performance.This PMIC device integrates several power management functions into one chip. It includes a 4-phase synchronous buck converter, a single-phase buck converter, a low-dropout linear regulator and a low-dropout linear regulator with tracking mode. The synchronous buck is composed of three voltage ranges, each of which provides individually adjustable output current, voltage and slew rate. This allows for the precise control and management of the system voltage level. The single-phase buck manages two voltage ranges, set and read directly from the system registers, and can provide precise voltage regulation and precise current regulation in each range. The linear regulators provide precise current regulation, precise voltage regulation, and tracking mode for both regulators. This allows for the precise control of the various load current outputs, whether from voltage-dependent chips or from load currents from separately managed supplies.The IR3081AMTRPBF can also control and regulate the system power supply input. This is achieved through an external MOSFET switch that can be driven directly by the integrated microcontroller. This MOSFET is used to open the disconnect between the system and the power supply input, allowing the system to power down during periods of low load. This allows for improved system efficiency and reduces power dissipation.The IR3081AMTRPBF also includes an integrated temperature sensor that monitors the temperature of the chip and provides an accurate indication of the core temperature. This helps to ensure the chip is operating within its proper temperature range and can increase system performance and reliability. The power management features of the IR3081AMTRPBF are also assisted by its system-level sequencing and control logic. This logic allows for precise timing of various power supplies and can be used to ensure accurate sequencing of the multiple power supplies required on the Raspberry Pi. This can eliminate the need for additional components used for sequencing and power supply management.The IR3081AMTRPBF is designed for a wide range of applications such as Raspberry Pi powered systems, power management for automotive infotainment systems, multi-function dataloggers, industrial control systems, and even IoT devices. It can provide precise regulation of multiple power supplies and its integrated microcontroller provides various power management and monitoring capabilities. With its high integration level and versatile features, the IR3081AMTRPBF is a great choice for multiple power management applications.

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