BU4215FVE-TR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	1.5V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-665
Supplier Device Package:	5-VSOF
Base Part Number:	BU42*

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Introduction The BU4215FVE-TR is an integrated circuit that acts as a supervisor for power management in electronic systems. It is capable of detecting multiple power input conditions and reacting accordingly to ensure safe operation and secure protection. It is designed to monitor three low voltage (3.3V, 5V and 12V) power rails and detect under-voltage, over-voltage, and over-temperature conditions. The BU4215FVE-TR also has two independent, open-drain outputs that can be used to control system power-up, power-down, and power shuts.Application Field The BU4215FVE-TR is typically used in medium- to high-performance systems such as automotive, industrial, and commercial grade power control applications. It is also suitable for use in various distributed power systems and is typically coupled with devices that are used for power management.The BU4215FVE-TR is ideal for applications that require reliable over-temperature protection and over-voltage protection with its dedicated open-drain outputs. It is also capable of achieving tight voltage regulation tolerance of ±3% and can be programmed to detect several different fault conditions with an internal digital watchdog timer.Working Principle The BU4215FVE-TR operates in two distinct modes: Power Up (PU) and Power Down (PD), which are selected automatically based on the input conditions. In Power Up mode, the supervisor monitors the voltage levels of 3.3V, 5V and 12V rails and delivers an active-Low Output if one of them falls below the pre-determined threshold. In Power Down mode, the supervisor is still monitoring the input conditions but the Low Output is inactive and stays low.The BU4215FVE-TR also has a Temperature Sense Input that allows it to actively monitor the temperature of the system and react correspondingly. If the temperature exceeds the pre-determined threshold the controller will assert a high level and trip the temperature output.The BU4215FVE-TR has several configurable parameters that can be used to program the controller to account for various different variables in the system and react accordingly. These parameters are used to set voltage thresholds and time delays and also to select the operating mode of the controller.Conclusion The BU4215FVE-TR is a versatile integrated circuit, capable of both over-voltage and over-temperature protection and is therefore suitable for use in a variety of commercial, automotive and industrial applications. Its configurable parameters can be used to tailor the behaviour of the controller to suit the specific requirements of the system and provide a reliable level of protection to secure the operation and integrity of the system.

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