ADM6328-29ARTZ-R7

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PMIC - Supervisors - ADM6328-29ARTZ-R7 application field and working principle

ADM6328-29ARTZ-R7 is a power management system IC (PMIC), more specifically, a supervisor IC. In order for most electronics to operate, including the power supplies used in them, the input power must be stabilized and regulated. Supervisors ICs are the devices used to keep that power stable, making sure that if power is lost, the device will be shut down safely and remain so until it is re-powered. ADM6328-29ARTZ-R7 is just such a supervisor IC, designed to provide this important safety feature.

Features of the ADM6328-29ARTZ-R7

The ADM6328-29ARTZ-R7 is a second-generation power supervisor IC that integrates an over-voltage, reverse-battery and short circuit protections, as well as a brownout and other pre-fault protections in a single package. It also provides an integral 2.8V to 4.7V input regulator, and a precision voltage reference. The IC was designed to replace the older Analog Devices ADM6318-20ARTZ series with improved features and higher integration.

The ADM6328-29ARTZ-R7 provides four integrated regulated voltages, plus three low-side switches, with over-temperature, under-voltage, reverse-battery and short-circuit protections incorporated into the IC. The IC contain a number of features to provide outstanding system performance and robustness, including user-selectable bias levels, current limit and temperature derating, reverse battery protection and adjustable voltage scaling. The IC also feature advanced analog Over-Voltage protection (UVP) and Brown-Out protection (BOP), with configurable trip points in order to cover various system scenarios.

Application Areas for the ADM6328-29ARTZ-R7

The ADM6328-29ARTZ-R7 can be used in a wide range of applications as a supervision IC, including automotive and industrial power solutions, telecommunications, gaming and notebook power solutions, and more. Additionally, the IC can be used in embedded systems, such as medical imaging, automotive diagnostic, and electronic point of sale equipment, among others.

The IC incorporates a universal input range, allowing it to be used with most power sources; an integrated over-voltage comparator provides robust protection against reverse-battery, short-circuit, and over-voltage faults. The IC is designed to provide safe shutdown under conditions such as over-voltage, temperature and load current faults - ensuring the safety of the system and connected loads, regardless of the external conditions.

Working Principle of the ADM6328-29ARTZ-R7

The ADM6328-29ARTZ-R7 uses extra on-chip circuitry to provide many of its features. This consists of internal bandgap references, a power management control circuitry, an analog comparators, an I2C interface, and a temperature sensor. This integration allows the IC to provide an optimal power management solution, including programmable system shutdown, with minimal external circuitry.

The IC works by monitoring the power supply voltages, current and temperature using built-in circuitry. When a voltage threshold is crossed, logic on the IC will shut down the power, signaling the connected Load or main power supply to do the same, protecting the system and connected devices. The IC will then wait until the power is reset, before allowing the power to be re-applied to the system.

The IC is designed with safety in mind, and has numerous safeguards to ensure the system remains stable and functioning minimized risk of damage due to incorrect power input. Additionally, it has a wide operating temperature range, making it suitable for use in applications where a wide temperature range is expected, such as automotive and industrial applications.

Conclusion

The ADM6328-29ARTZ-R7 is a superbly designed supervisor IC and is perfectly suited for a wide range of applications. Offering both robust performance and safety features such as over-voltage, reverse-battery and short circuit protection, alongside an integral voltage regulator and temperature derating, the IC is an ideal choice for any power management solution. The ADM6328-29ARTZ-R7 is a highly versatile and cost-effective supervisor IC that provides superior results in most power management systems.

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