LTC2931IF#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Monitor
• Characteristics: High accuracy, low power consumption
• Package: ThinSOT-23
• Essence: Monitors the voltage level of a power supply and provides an output signal based on user-defined thresholds
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 36V
• Threshold Accuracy: ±1.5%
• Quiescent Current: 10µA
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active Low/Open Drain
• Adjustable Thresholds: Yes
• Hysteresis: Programmable
• Fault Detection Timeout: Programmable

Pin Configuration

The LTC2931IF#TRPBF package consists of six pins:

1. GND: Ground connection
2. VIN: Input voltage pin
3. TH: Threshold pin for setting the desired voltage threshold
4. FLT: Fault output pin indicating a power supply fault condition
5. GATE: Open-drain output pin for driving external circuitry
6. VCC: Supply voltage input pin

Functional Features

1. Accurate Monitoring: The LTC2931IF#TRPBF monitors the input voltage with high precision, ensuring reliable power supply monitoring.
2. Programmable Thresholds: Users can set the desired voltage thresholds using the TH pin, allowing customization for specific applications.
3. Fault Detection: The FLT pin provides an output signal when the input voltage falls below or exceeds the programmed thresholds, indicating a power supply fault condition.
4. Flexible Output: The open-drain GATE pin allows easy interfacing with external circuitry, enabling various system responses based on the fault condition.

Advantages and Disadvantages

Advantages: - High accuracy monitoring ensures system reliability. - Programmable thresholds allow customization for different applications. - Low quiescent current minimizes power consumption. - Flexible output options facilitate system integration.

Disadvantages: - Limited to a specific package (ThinSOT-23). - Not suitable for applications requiring high voltage monitoring.

Working Principles

The LTC2931IF#TRPBF operates by comparing the input voltage with the user-programmed thresholds. When the input voltage falls below or exceeds these thresholds, the fault output pin (FLT) is activated. The open-drain output pin (GATE) can be used to drive external circuitry, such as an alarm or shutdown mechanism. The device continuously monitors the input voltage and updates the fault condition accordingly.

Detailed Application Field Plans

The LTC2931IF#TRPBF finds applications in various fields, including:

1. Power Supply Monitoring: It is commonly used in electronic devices to ensure stable power supply conditions and protect sensitive components from voltage fluctuations.
2. Battery Management Systems: The LTC2931IF#TRPBF can be employed in battery-powered systems to monitor the battery voltage and trigger appropriate actions when the voltage reaches critical levels.
3. Industrial Control Systems: It plays a vital role in industrial control systems, where precise power supply monitoring is crucial for maintaining operational stability and preventing equipment damage.

Detailed and Complete Alternative Models

1. LTC2930: Similar to LTC2931IF#TRPBF but with a different package (DFN-6).
2. MAX16050: Power supply monitor IC with adjustable threshold levels and push-pull output.
3. ADM1175: Integrated power supply supervisor with programmable undervoltage and overvoltage thresholds.

These alternative models offer similar functionalities and can be considered based on specific requirements and preferences.

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