BD4959FVE-TR

Series:	BD49xxx
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	5.9V
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-665
Supplier Device Package:	5-VSOF
Base Part Number:	BD49

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PMIC - Supervisors

PMIC (Power Management Integrated Circuit) Supervisors are integrated circuits used to monitor and control operating power supply systems. Additionally, these circuits can reset the device or initiate a system shutdown. The BD4959FVE-TR is a supervisor IC designed for automotive applications.

Overview

The BD4959FVE-TR is a power management IC with multiple bottom (VCC) detection circuits. It is designed with a proprietary startup circuit and a low power consumption circuit that can monitored the power supply over-current conditions of the vehicle’s system voltage.The BD4959FVE-TR is functionally similar to other supervisors offered by other vendors, however, design differences provide unique performance. Generally speaking, this supervisor is capable of providing automotive specific operations including startup (STST pin), pre-charge (PCHG pin) and power-on reset (POR pin). It is also compatible with automotive EV8 bus communication systems.

Operation of BD4959FVE-TR

The BD4959FVE-TR is a supervisor that monitors voltage, current, and temperature parameters. It is designed to accurately detect when these parameters stray from predetermined levels, causing the IC to initiate the necessary corrective action.The IC operates according to the following steps:1. The IC compares the targeted voltage with the measured voltage level. If the measured voltage level is higher than the targeted one, the IC directs power to the system.2. If the current level reaches the predetermined overcurrent threshold, the IC will shut down the system, thus protecting the system from damage due to excessive current.3. The IC also monitors temperature levels. If the temperature reaches a certain level, the IC can shut down the system or increase the frequency of internal operations to avoid over-heating.

Applications

The BD4959FVE-TR supervisor IC is designed for the automotive industry, where it is used to monitor and control automotive power related systems such as electric power steering (EPS), engine, and charging.The IC can also be used for power supply applications that require high accuracy voltage and current measurements, as well as temperature protection. Its fast response time and low power consumption make it suitable for applications that require short start-up times and low power consumption.

Conclusion

The BD4959FVE-TR is a power management IC designed for the automotive industry. It is capable of monitoring and controlling automotive power related systems, ensuring accuracy when it comes to voltage, current, and temperature levels. This IC is suitable for applications that require high accuracy, fast response times and low power consumption.

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