BD4746G-TR Integrated Circuits (ICs)

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:	4.6V
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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PMIC (Power Management Integrated Circuit) is a type of integrated circuit that includes power management functions and provides significant improvements in system efficiency and performance. The BD4746G-TR Supervisors is a PMIC that is designed for monitoring and controlling various power systems in various applications.BD4746G-TR is a type of 3-channel supervisor IC that is designed for battery-backed applications. This IC integrates a microcontroller, power management, and various analog-to-digital conversion functions for the purposes of providing system-level power control such as monitoring battery voltage, controlling system power, and preventing over-discharging. With integrated 4-bit microcontroller, the BD4746G-TR can also be used to perform various system operations such as software-controlled reset, programmable sequence control, overvoltage detection, open drain output and other tasks.The main features of the BD4746G-TR include 5 operating voltage levels (1.8V, 2.7V, 3.3V, 3.6V, 5.0V). It also includes 5 programmable sequencing responses, allowing user-selectable responses to reset events. The reset pin of the BD4746G-TR can be configured with an external pull-up to start up the system, while the reset output and reset input are controlled under software control.In terms of power monitoring, the BD4746G-TR has a set of differential comparators that can be used to monitor low-level input power signals (3V). It can be used for signals such as battery voltage, system voltage, battery charging voltage, etc. It can also perform temperature monitoring, in which the BD4746G-TR is equipped with an integrated temperature sensor that can measure temperature up to +105℃ .The reset pin of the BD4746G-TR provides an adjustable reset level voltage with hysteresis that is ideal for battery-powered systems. This makes it possible to detect very low voltages and limits the effects of power supply transients. It also contains an overvoltage protection circuit that prevents overcharging of the system by setting a maximum voltage limit.The BD4746G-TR also features low-power operation, with a quiescent current of 3.2uA in shutdown mode. It also features over-discharge protection by preventing system powering when a battery is more than 0.5V below its minimum operating voltage.The BD4746G-TR is mainly used in battery-backed applications such as mobile phones, notebook computers, communication equipment, medical equipment, and portable electronic devices. It can also be used in various industrial systems such as water heating systems, security systems, industrial control systems, and lighting systems.In terms of operation principle, the BD4746G-TR uses a built-in microcontroller to monitor various power parameters and control the system. It can detect system power, battery voltage, battery charging voltage, and other voltage signals while also monitoring temperature and user settings. The built-in comparators and voltage detectors are used to detect overvoltage and low voltage signals respectively as well as changes in system temperature. The resistor values of each channel can also be adjusted to select the desired reset level. The output pin of the BD4746G-TR is an open-drain output that can be used in latch-up protection, system reset, and other user-defined functions. When the voltage drops below its reset threshold, the reset output will be pulled low to indicate a reset event.Overall, the BD4746G-TR is a versatile 3-channel supervisor IC designed for battery-backed applications. It integrates various monitoring and control functions as well as a reset pin for various system operations. This makes the BD4746G-TR suitable for a variety of applications such as mobile phones, notebook computers, communication equipment, medical equipment, industrial systems, and other battery-backed systems.

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