UC3903NG4 Allicdata Electronics
Allicdata Part #:

UC3903NG4-ND

Manufacturer Part#:

UC3903NG4

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: Texas Instruments
Short Description: IC SUPPLY/LINE MONITOR 18-DIP
More Detail: Supervisor Push-Pull, Totem Pole 4 Channel 18-PDIP
DataSheet: UC3903NG4 datasheetUC3903NG4 Datasheet/PDF
Quantity: 1000
1 +: 0.00000
Stock 1000Can Ship Immediately
$ 0
Specifications
Series: --
Packaging: Tube 
Part Status: Obsolete
Type: Multi-Voltage Supervisor
Number of Voltages Monitored: 4
Output: Push-Pull, Totem Pole
Reset: Active Low
Reset Timeout: Adjustable/Selectable
Voltage - Threshold: Adjustable/Selectable
Operating Temperature: 0°C ~ 70°C (TA)
Mounting Type: Through Hole
Package / Case: 18-DIP (0.300", 7.62mm)
Supplier Device Package: 18-PDIP
Base Part Number: UC3903
Description

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The UC3903NG4 is an advanced multi-function, low power electronic supervisor - a type of power management and integrated circuit (PMIC). This chip offers a complete, integrated solution for systems that require high reliability power supervision, shutdown, and multiple power off operations.

The UC3903NG4 can be used in various applications, including PCs, workstations, servers, and embedded systems, as well as for industrial equipment, automotive, instruments, and data acquisition systems. It can also be used in power supplies, modems, network switches, and other equipment where a reliable power supply is required.

The primary purpose of the UC3903NG4 is to provide circuit protection and system management. It has two main components: a voltage detection and control tool, and a dynamic power management system. The voltage detection and control tool is responsible for monitoring system power levels and outputting signals to the other components. The dynamic power management system is responsible for managing power utilization and programing voltage levels to maintain system stability.

The UC3903NG4 also has additional features such as overvoltage and undervoltage protection, auto reset capability, snubberless load protection, watchdog timer, and short-circuit protection. It is designed to operate in applications requiring high voltage levels, such as those found under automotive, industrial, or military applications.

The UC3903NG4 works in different modes to detect the relative voltage of an input signal, and then five different operations are performed: an overload protection function, an overvoltage protection function, an undervoltage protection function, a reset function, and a watchdog timer function.

When the input voltage is exceeding the rated value, the overload protection function is triggered. The overvoltage protection function is activated when the input voltage rises above the rated value and the undervoltage protection function is triggered when the voltage drops below the rated value. The reset function is initiated when the input voltage is above the specified threshold. The watchdog timer function is used to initiate a reset when a time-out has occurred.

When the UC3903NG4 is active, it constantly monitors the input voltage levels, and if the voltage exceeds the specified values, it can output a signal to power off the system or initiate a reset to the system. This allows for secure system shutdown in the case of an overvoltage or undervoltage condition, or resetting the system by restarting the power in the event of a system failure.

The UC3903NG4 is designed with a low power feature which keeps the power supply and logic going even when the system is powered off. This feature allows the device to continue to monitor the system power levels in the event of a power-off condition. This enables the device to react quickly if an overvoltage or undervoltage condition arises and power off or reset the system.

The UC3903NG4 is a versatile device that is used in a variety of applications. It is designed to be integrated into existing systems and can be used for a wide range of consumer, commercial, and industrial applications. Its low power feature, along with its advanced voltage detection and control, make it a desirable choice for many applications.

The specific data is subject to PDF, and the above content is for reference

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