Allicdata Part #: | LM3722IM5X-3.08/NOPB-ND |
Manufacturer Part#: |
LM3722IM5X-3.08/NOPB |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC MPU SUPERVISR 3.08V SOT23-5 |
More Detail: | Supervisor Push-Pull, Totem Pole 1 Channel SOT-23-... |
DataSheet: | LM3722IM5X-3.08/NOPB Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Type: | Simple Reset/Power-On Reset |
Number of Voltages Monitored: | 1 |
Output: | Push-Pull, Totem Pole |
Reset: | Active Low |
Reset Timeout: | 100 ms Minimum |
Voltage - Threshold: | 3.08V |
Operating Temperature: | -40°C ~ 85°C (TA) |
Mounting Type: | Surface Mount |
Package / Case: | SC-74A, SOT-753 |
Supplier Device Package: | SOT-23-5 |
Base Part Number: | LM3722 |
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Introduction
The LM3722IM5X-3.08/NOPB is a Voltage Supervisor device. It is a Partial Power Management Integrated Circuit (PMIC) specifically designed to ensure the integrity and proper functioning of electronic systems. This device is mainly used to monitor power supply voltages, providing protection against sudden drops and surges. It features a precision threshold (Trigger) Voltage of 2.97 Volts, as well as adjustable Brown-Out Voltage and Watchdog Timer with selectable Timeout Periods. The LM3722IM5X-3.08/NOPB also provides input voltage clamping for protection against Reverse Voltage Stress.Application Field
The main application field for the LM3722IM5X-3.08/NOPB Voltage Supervisor is for monitoring core power supplies and providing reset control in microprocessor based systems. It is also suitable for overvoltage, undervoltage and overcurrent detection, as well as open circuit monitoring in a variety of power supply applications. Due to its small size, robust features and high accuracy, the LM3722I5X-3.08/NOPB is ideal for situations where space is at a premium, such as automotive and industrial electronics.Pin Descriptions
The LM3722IM5X-3.08/NOPB comes in a 8-pin miniature Thin Small Outline (SO) package, which has the following pin out configuration:Pin 1: VPC - Power Supply Input – Negative.Pin 2: RESET/SD - Reset/Shutdown control.Pin 3: WDT - Watchdog Timer input.Pin 4: NC - Not Connected.Pin 5: EN - Enable input.Pin 6: VL - Ground.Pin 7: VS - Voltage Sense input.Pin 8: V+ - Power Supply Input – Positive.Main Features
The LM3722IM5X-3.08/NOPB Supervisor is a precision voltage monitor with adjustable reset thresholds and watchdog timer. Its features include:• Precision Threshold Voltage of 2.97 Volts with +/- 1.5% accuracy.• Adjustable Brown-Out Voltage from 2.5V to 4.0V.• Adjustable Watchdog Timeout periods from 25μs to 1.4ms.• Input Voltage Clamping for Reverse Voltage Protection.• Reset Support for low voltage detection with Reset/Shutdown Control.• Choice of Enable Inputs to Support Supervisory Requirements.• Robust Temperature Range from -55°C to +150°C.• High Level ESD Protection.• High Accuracy Voltage Reference Source.• Operating Voltage Range of 1.8V to 6V.Working Principle p>The LM3722IM5X-3.08/NOPB works by monitoring the VS input and comparing it to the internal 2.97V threshold at all times. If the VS is below the 2.97V threshold, the device will initiate reset and shutdown processes. If the VS exceeds the 2.97V threshold, the RESET/SD output maintains a logic high state, thus insuring proper system operation.The adjustable N-channel MOSFET-controlled brown-out voltage circuitry allows for reset thresholds adjustment for different power supply loads. This feature is designed to protect against sudden drops in the input supply voltage. The adjustable WDT (Watchdog Timer) feature provides a safeguard against system hung-up or stuck in a loop. When the input voltage VS is greater than the trigger voltage threshold, the WDT is decremented until it reaches zero. Once it reaches zero, the internal timer will send a reset signal to the system via the RESET/SD Output line. Lastly, the VPC (Power Supply Input), which is connected to the negative lead of the input supply, also provides input voltage clamping for protection against reverse voltage stress.
Conclusion
The LM3722IM5X-3.08/NOPB Voltage Supervisor is an excellent device for monitoring core power supplies and providing reset control in microprocessor based systems. Its low power consumption, robust features and wide operating temperature range make it an ideal solution for applications which require voltage regulation accuracy and reliability. Its small size makes it an attractive solution for those applications which require a compact device. Furthermore, its adjustable Brown-Out Voltage and WDT features ensure a reliable system operation in all types of applications.The specific data is subject to PDF, and the above content is for reference
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