X4163PZ-2.7A

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The X4163PZ-2.7A is a power supervisor device, or PMIC, most commonly employed in embedded systems, portable electronics and automotive applications to ensure safe system operation during power and sleep management states, provide resets and watchdogs, limit and control power supplies, deliver power sequencing and implementation of a standby and keep-alive power.

Introduction:

The X4163PZ-2.7A is a family of multi-function power reset supervisor ICs from a Renesas. It integrates many different voltage monitoring, power monitoring, event logging and reset functions into one convenient device. The device is designed with embedded system, automotive, computer and industrial applications in mind, although it is also applicable in any system requiring a wide range of voltage and temperature monitoring and reset capabilities.

Application Field:

The X4163PZ-2.7A is an ideal solution for all types of embedded, portable and automotive systems, providing proven reliability and ease of use. It offers a unique integration of many different functions, including an under-voltage lock-out (UVLO) to ensure all system voltages are at the required levels. The power up and power down sequence generator feature offers a clear form of power sequencing that allows for safe system operation during power on and power off events. It is also designed with a low start-up current to minimize system current-draw during start-up. Furthermore, the X4163PZ-2.7A features a power-save mode and a keep-alive power generator, allowing systems to remain powered even when the main power source is lost.

The device’s multiple voltage monitoring and over-current protection circuits ensure safe system operation while its CLKOUT output provides a programmable clock source. The power-on reset function provides a way to ensure proper system operation when the device is first powered on while its reset input provides an additional way to reset the system without shutting down the power. Finally, the X4163PZ-2.7A integrates and monitors temperature levels through its internal thermal shutdown circuit and event logger.

Working Principle:

At the heart of the X4163PZ-2.7A is its on-chip regulation circuit that works together with the other circuits to ensure safe system operation. The regulation circuit consists of a band gap referencing circuit and two comparators. The reference circuit is used to generate a precise adjustable voltage that is compared to the system voltage by the two comparators. If the voltage drops below the level set by the adjustable voltage, the regulation circuit turns on the power saving function and performs a reset cycle. If the voltage rises above the level set by the adjustable voltage, the regulation circuit turns off the power saving function and starts the power up sequence.

The X4163PZ-2.7A also includes a temperature detection circuit that monitors the internal temperature of the system. If the temperature exceeds a certain level, the thermal shutdown circuit will shut down the entire system. In order to ensure that the system is still protected against extreme temperature conditions, the thermal detection circuit also includes an event logger that records the various temperature events.

The X4163PZ-2.7A power supervisor is an ideal solution for most embedded system, portable and automotive applications because of its wide range of voltage and temperature monitoring and reset functions. It integrates multiple voltage regulation, temperature detection, power sequencing, reset and watchdog features into one device, allowing for easy system integration and reliable operation. The regulators are adjustable to a precise level, allowing for a wide range of system operations that can be tailored to the specific needs of the application. Furthermore, the device also features a low start-up current, making it ideal for systems with short, but event-packed power-up and power-down cycles. Finally, its integrated temperature detection, power-save and keep-alive functions make the device an ideal solution for any embedded system or automotive application.

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