BD4740G-TR

Series:	BD47xx
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	4V
Operating Temperature:	-40°C ~ 75°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	5-SSOP
Base Part Number:	BD47

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Introduction

The BD4740G-TR is a PMIC (Power Management IC) that belongs to the Supervisors category. These power management ICs are used for advanced power management and system protection functions in a variety of electronic products. This particular device is a High Accuracy Voltage Monitor that is used to detect changes in voltage, detect supply failures and protect system components from IPL or HALT situations or overvoltage or undervoltage.

Application Fields

BD4740G-TR is suitable for use in a broad range of applications, such as power management, embedded systems, medical devices, gaming systems, communications systems, industrial automation, automotive applications and portable electronics.

Working Principle

The device works by monitoring an external voltage and comparing that voltage with an internally preset trip level. When the monitored voltage rises above or drops below the preset trip level, a window comparator will trigger a reset pulse, a power-on reset or Halt protection.The monitor voltage can be adjusted over a wide range of 0.7V to 3.6V, and the sensitivity of the trip level can be adjusted with a single external resistor to fine-tune the window comparator. This allows the device to be used in many different applications.The BD4740G-TR also feature an Auto-Reset Mode that can be adjusted with a single pin. In this mode, the device will automatically reset when the voltage returns to normal after a power failure. This is useful in systems that require a reset when the power comes on. The reset delay can be set internally to avoid false reset signals.The device also has two single-pole/double-throw external inputs that can be used to detect power failures and to generate a reset pulse. These inputs can be used to detect the presence of a positive supply, the absence of a secondary supply, the failure of a supply voltage or the lack of sufficient charge on a backup battery.Finally, the device also features an input for remote reset or Halt protection. This feature allows for remote monitoring of the system state and the ability to reset or halt the system when necessary.

Conclusion

The BD4740G-TR is an extremely versatile power management IC that can be used in a wide variety of applications. With its adjustable voltage and trip level, as well as its remote reset and Halt protection features, it provides system designers with innovative and reliable power management and system protection in a single IC.

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