BD5347FVE-TR

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Power management integrated circuits (PMICs) are widely used to manage microprocessors and other electronic components in a variety of electronic applications. They enable users to keep power under control with features such as low power standby and standby wakeup. PMICs help to regulate power, reduce standby power consumption and provide enhanced reliability and flexibility. They can also be used to manage dynamic power load, optimize power delivery, reduce system noise and eliminate system clock jitter.

There are many different types of PMICs, such as Voltage Regulators, Current Regulators, Charge Pump and Supervisors. Supervisors are PMICs that provide an array of power-up and power-down functions, providing reliable energy management. They are commonly used in applications such as embedded processors, network devices, and communications systems. A specific type of supervisor commonly used in consumer electronics, including cellphones and digital cameras, is the BD5347FVE-TR.

Application Field

The BD5347FVE-TR is an ultra-low power, 2-channel power supervisor that supports bi-directional voltage monitoring and system reset. It is designed for use with LCDS and other mobile consumer applications that require power sequence adjustment and power-off control. The device provides two independent output channels, each with its own independently programmable timer and voltage detector. The two channels can be configured to provide power-on reset and power-off reset for the respective circuit paths.

The BD5347FVE-TR offers excellent levels of integration and current consumption, in addition to offering a wide operating temperature range of -40℃ to 125℃. The device is packaged in a small form factor to save board space, and has built-in circuitry to protect against battery overvoltage conditions. It is compatible with common 1.2V / 1.8V / 3.3V power supply. This makes it ideal for space-constrained and low-power applications.

Working Principle

The working principle of BD5347FVE-TR is based on its dual-channel power supervision system. The device can detect power-on, power-off, undershoot and overshoot conditions, and then issue a reset signal in response to these conditions. It works by monitoring two power supply voltages, with each channel having its own independent timer and voltage detector.

When power is initially applied to a device, the first channel detects the input voltage and generates a start signal. The second channel then monitors the voltage level from the first channel, and if the voltage detected is within the specified range, a reset signal is issued. When the power supply voltage drops below the under-voltage threshold, thereset signal is issued and the device is reset. The device contains a variety of features to ensure reliable power management, such as adjustable voltage detectors, independent start and reset signals on each channel, adjustable timers and adjustable reset pulse widths.

The BD5347FVE-TR is a versatile power supervisor that can be used in a variety of consumer and industrial applications. Its low power consumption and wide operating temperature range make it an ideal solution for low power applications. Its small form factor and integrated protection circuitry make it a cost-effective solution for space-constrained applications. Finally, its programmable timers and adjustable reset pulse widths provide users with a reliable and flexible power management system.

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