ACT8710QLDHA-T

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Part Status:	Obsolete
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Current - Supply:	--
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Introduction to ACT8710QLDHA-T Power Management IC

The ACT8710QLDHA-T is a highly-recognized power management integrated circuit (PMIC) designed to support a range of applications. It is part of a larger family of Power Management ICs (PMICs) from Analog Devices. The ACT8710QLDHA-T is one of the more specialized processors from the PMIC family, offering an economical solution for managing low power and low noise applications.

Application Fields of ACT8710QLDHA-T

The ACT8710QLDHA-T is suitable for a wide range of low power applications, including low voltage DC power supplies, solar power systems, LED lighting systems, battery charging, and small scale light industrial or factory automation applications. Its high efficiency and low power consumption make it ideal for compact applications where space and cost are major constraints. It is also often used in communication systems and security equipment, where low energy input is a must.

Working Principle of ACT8710QLDHA-T

The ACT8710QLDHA-T features a power switch design for stability and high efficiency. It provides up to 85% efficiency when switching up to 2.5V. This PMIC is designed to handle both AC and DC power, and it can support up to 2.5V when switching from DC-DC. Its micro-power technology ensures that standby current is extremely low, eliminating unnecessary power waste. The ACT8710QLDHA-T also features a current limit circuit, ensuring that the load current is always kept under control, regardless of the input voltage. The earliest step in the working process of the ACT8710QLDHA-T is the power-on reset, which serves as a protection measure in the event of an unexpected overload or input voltage fault. The power-on reset ensures that the system is brought back to a stable operational state in the event of an overload or input voltage fault before the process can be resumed. After the power-on reset is complete, the driver circuit of the PMIC will take over and switch the high-side and low-side FETs accordingly. The driver circuit features both forced pre-charging and high-side discharge (HSD) functions, which help increase the efficiency and reduce the power dissipation.After the high-side and low-side FETs are switched, the ACT8710QLDHA-T will monitor the input and output voltages to maintain power output regulation. The regulation process begins by measuring the open-loop control signal and adjusting the duty cycle to maintain voltage regulation. If the signal is too low, the duty cycle will be increased, while if the signal is too high, it will be decreased. The controller will continue to adjust the duty cycle and monitor the signal until the desired voltage is reached. The ACT8710QLDHA-T also includes additional safety measures such as under-voltage lockout and over-temperature protection to ensure stability and reliability.

Conclusion

The ACT8710QLDHA-T is a highly-recognized PMIC designed to support a range of low power applications. It features a power switch design for stability and high efficiency, micro-power technology for low standby current, and advanced protection features for reliability. Its versatility and low power consumption make it suitable for a wide range of applications, including low voltage DC power supplies, solar power systems, LED lighting systems, battery charging, and small scale industrial applications.

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