BD4955G-TR Integrated Circuits (ICs)

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:	5.5V
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	5-SSOP
Base Part Number:	BD49

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Introduction

The BD4955G-TR is a high performance supervisor from ROHM Semiconductor, providing efficient and reliable power management solution to the electronic industry. With its efficient features, it can be used in a wide range of applications, and its working principle is based on a combination of current monitoring and regulating with temperature control.

Overview

The BD4955G-TR is an ultra-low power, integrated power management IC (PMIC) designed to protect I/O circuits and the system from over-voltage, over-current and over-temperature conditions. It incorporates a high performance 4-bit digital protection circuit, a highly integrated 4-bit CMOS RAM that offers multiple settings for various protection settings and temperature characteristics, and a temperature sensor for temperature control. It is optimized for reliable performance in both applications operating at low and high temperatures.

Application Field

The application field of BD4955G-TR includes a wide range of embedded and consumer electronics such as tablet PCs, digital cameras, mobile phones, set-top boxes, and routers. It can also be used in various power management solutions for automotive, industrial, medical, telecom and consumer applications.The BD4955G-TR is capable of protecting devices from over-current conditions, over-voltage and over-temperature conditions. It also monitors and regulates input and output voltage/current to maintain system stability.

Working Principle

The working principle of BD4955G-TR is based on the combination of current monitoring and regulating with temperature control. The integrated 4-bit digital protection circuit monitors input and output current and automatically disconnects the power supply when either exceeds its maximum threshold. When the temperature rises beyond the preset level, the internal temperature sensor triggers the power supply disconnection and the device enters a "sleep" mode until the temperature is reduced to safe levels again.In addition, the integrated 4-bit CMOS RAM enables programming of the various protection settings and temperature characteristics to meet the specific needs and requirements of different applications.

Conclusion

The BD4955G-TR from ROHM Semiconductor is an ultra-low power, integrated power management IC (PMIC) designed for various embedded and consumer electronics applications. With its efficient features, it can be used in a wide range of applications and its working principle is based on a combination of current monitoring and regulating with temperature control. The integrated 4-bit digital protection circuit, a highly integrated 4-bit CMOS RAM and a temperature sensor enable reliable performance in both applications operating at low and high temperatures.

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