S-8240AAC-I6T1U

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Power Management Integrated Circuits (PMICs) are one of the most important components in any electronic device. They provide the necessary power supply and control the distribution of power to other components, allowing a smooth operation of the system. The S-8240AAC-I6T1U is a component of PMIC that is used for battery management and power control.

Overview

The S-8240AAC-I6T1U is a 32-bit programmable power management integrated circuit from ROHM Semiconductor. It is a single chip solution for managing the power levels in a variety of applications, from industrial to handheld. It is designed to maximize battery life and decrease overall system power consumption. The S-8240AAC-I6T1U is a low-voltage step-down buck converter and additionally manages power islands with very low quiescent current in order to achieve energy efficiency.

Application Field

The S-8240AAC-I6T1U is designed to be used in a variety of applications. It is used in a broad range of portable and industrial products that require energy-efficient battery management or compact power control. Examples include handhelds, portable medical devices, tablet PCs, point-of-sale (POS) terminals, and automotive avionics. The S-8240AAC-I6T1U is widely used in many modern devices due to its high reliability and low current consumption.

Working Principle

The S-8240AAC-I6T1U includes integrated and enhanced features for optimal power efficiency and control. It consists of a voltage regulator, buck converter, power sequencer, and voltage detectors. The voltage regulator is used for accurate voltage regulation and allocation, the buck converter is used for efficient power conversion, the power sequencer is used for managing the power on/off sequence in complex systems, and the voltage detectors are used for protection and efficient operation.

The S-8240AAC-I6T1U works by converting the incoming voltage (input voltage) to a regulated output voltage. It monitors the battery voltage, temperature, and power load to regulate and optimize the system power performance. It contains two operating modes, an “active” mode and a “standby” mode. In “active” mode, the voltage regulator is used to maintain a steady output voltage, and during “standby” mode, the voltage regulator is disabled to reduce the quiescent current.

The S-8240AAC-I6T1U also contains additional features such as slew-rate control, power-saving sleep mode, current protection, manual reset, and a maximum power point tracking (MPPT) algorithm. The slew-rate control helps to reduce output voltage fluctuations and the power-saving sleep mode reduces overall system power consumption. The current protection feature prevents the system from being damaged by short circuits or over-current events.

Conclusion

The S-8240AAC-I6T1U is an effective power management IC used in a wide range of portable and industrial electronics. It provides the necessary power supply and control the distribution of power to other components, allowing a smooth operation of the system. This PMIC can provide up to 30-90% efficiency with its low quiescent current and efficient power conversion. Additionally, its integrated features such as voltage regulation, buck converter, power sequencers, voltage detectors, current protection, and MPPT algorithms, make it an ideal option for battery management and power control in modern devices.

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