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PMIC - Supervisors

Power management integrated circuits (PMICs) are components designed to manage power within a given system. They are designed to provide an efficient, versatile, and cost-effective power solution, making them ideal for a variety of applications. A PMIC supervisor is a special type of power management integrated circuit that provides voltage and temperature monitoring in order to protect the system from unexpected power failures or other issues. The S-1003NB14I-I6T1U is a highly reliable, single-channel PMIC supervisor developed by Renesas Electronics. This article will discuss the application field and working principle of the S-1003NB14I-I6T1U as a PMIC supervisor.

Application Field of S-1003NB14I-I6T1U

In general, the S-1003NB14I-I6T1U is best suited for systems that require high voltage, precise voltage and temperature monitoring, and excellent protection against power failure or unexpected conditions. Typical applications include but are not limited to server, storage, and networking equipment, industrial automation systems, automotive, and medical systems. The S-1003NB14I-I6T1U is also suitable for a range of powered portable electronic devices, such as smartphones, tablets, feature phones, and handheld gaming devices.

Working Principle of S-1003NB14I-I6T1U

The S-1003NB14I-I6T1U PMIC supervisor features an ultra-low-power operation and detects input voltage and temperature changes instantly, as well as providing fault detection and protection capabilities. It provides two forms of protection against overvoltage (OVP) and overtemperature (OTP) conditions, ensuring the system is protected even if one monitor fails. It also monitors the system voltage and temperature in order to quickly detect and respond to any unusual behavior.

The device is equipped with various digital logic functions, including an internal temperature alarm threshold, a timer for device-startup and system reset, as well as voltage monitoring, detection and response functionality. This makes the S-1003NB14I-I6T1U well suited for systems with high power loads and long-term stability requirements. It has an extended temperature range from -40 to +105 °C, allowing it to operate reliably in even the harshest environments.

The device also features a watchdog timer and an internal reset circuit with selectable reset delay intervals which can be adjusted according to the requirements of the system. This timer can prevent system ‘lock ups’ by generating an interrupt signal when the timer has expired, ensuring that the system automatically restarts and reboots if a fault is detected.The S-1003NB14I-I6T1U also includes a power-up and power-down control that prevents incorrect initialization conditions when the system is powered-up or powered-down.

The PMIC supervisor has excellent power-up/power-down performance, with an active power-down threshold of 0.8V for low voltage system recovery and a maximum input voltage of 5.5V. It also has an adjustable input voltage window that can be adjusted to the target voltage level of the system.The S-1003NB14I-I6T1U is designed with a bare die package that allows for easy integration into embedded or system-on-chip (SoC) designs. The package is highly compact at 1x2mm and has a low pin count of just 6 for easy PCB layout.

Conclusion

The S-1003NB14I-I6T1U PMIC supervisor is a single-channel device that offers a comprehensive range of power monitoring and protection features. It is particularly well suited for applications that require high voltage, precise voltage and temperature monitoring, and excellent protection against power failure or unexpected conditions. The device features an adjustable input voltage window, an internal temperature alarm threshold, a timer for device-startup and system reset, a watchdog timer, and an internal reset circuit with selectable reset delay intervals. It is highly reliable, efficient, and cost-effective, making it ideal for a variety of applications.

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