BD4832FVE-TR

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PMIC, or Power Management Integrated Circuits, have become essential components in modern electronics and devices. One such system is the BD4832FVE-TR, a PMIC-specific system that is designed to supervise the power flow in systems with multiple voltage domains. This system is often used in portable devices with display functions, including mobile phones, tablets, and digital cameras.

BD4832FVE-TR Application Field

The BD4832FVE-TR primarily provides power-on-reset (POR) and power-off-reset (PFR) functions for systems with multiple voltage domains. This helps to ensure a safe and reliable power supply for all the system’s components. Additionally, the BD4832FVE-TR also provides monitoring and reset functions to protect against over-voltage and under-voltage conditions. It also provides far-reaching protection against brownout, overcurrent, and thermal overload.

This PMIC supervisor is suitable for use in multi-voltage systems that have a single or multiple power domains, such as cellular phones and digital cameras. The BD4832FVE-TR is especially useful in systems that include an OLED display so that it can offer additional control for the power for display-related apps. Additionally, the BD4832FVE-TR is a low-power solution that requires minimal current draw from the main battery. This makes it ideal for portable device applications.

BD4832FVE-TR Working Principle

The BD4832FVE-TR PMIC supervisor monitors and controls the power supplied to the system by sensing and responding to input voltage, output voltage, and temperature. Its primary purpose is to monitor and control the power flow through the system and prevent any potential damage that may occur due to over-voltage or under-voltage conditions. This PMIC can also be used to generate a reset signal in the event of an over-voltage or under-voltage condition. Additionally, it can detect and respond to input/output voltage variations and generate a reset signal when this occurs.

The supervisor has two independent protection circuits, namely, the RST_L and RST_H which both generate an active-low output signal: RST_L is activated in case of under-voltage conditions and RST_H is enabled by over-voltage conditions. The activation levels of the RST_L and RST_H outputs can be programmed through the I2C interface. In addition, the BD4832FVE-TR also features a programmable timer for generating a reset signal in case of prolonged over-voltage or under-voltage conditions. The timer is programmable through the I2C interface as well.

The BD4832FVE-TR provides a robust level of protection for systems with multiple voltage domains. The main features it offers include a wide operating voltage range (2.3V to 5.5V), an adjustable 0.5V to 4.0V reset-threshold range, and an adjustable delay time of up to 6 seconds. Additionally, the device provides an interrupt pin that can be used to inform the system of an over-voltage or under-voltage condition. This makes the BD4832FVE-TR a highly versatile and reliable PMIC supervisor.

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