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TL7757IDR
Product Overview
- Category: Integrated Circuit (IC)
- Use: Voltage Supervisor
- Characteristics: Low-power, Precision, Reset Generation
- Package: SOIC (Small Outline Integrated Circuit)
- Essence: Monolithic CMOS Voltage Supervisor
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Supply Voltage Range: 1.2V to 5.5V
- Operating Temperature Range: -40°C to +85°C
- Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, and Adjustable
- Reset Timeout Period Options: 140ms, 560ms, and 1120ms
- Quiescent Current: 10µA (typical)
Pin Configuration
The TL7757IDR IC has the following pin configuration:
___________
| |
NC |1 8| VCC
NC |2 7| RESET
GND|3 6| MR
NC |4 5| OUT
|___________|
Functional Features
- Monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
- Provides a reset output that remains active until the supply voltage rises above the threshold for a specified timeout period.
- Offers various reset threshold voltage options to suit different applications.
- Low quiescent current consumption makes it suitable for battery-powered devices.
- Precision voltage reference ensures accurate monitoring.
Advantages
- Wide supply voltage range allows compatibility with various systems.
- Adjustable reset threshold option provides flexibility in voltage monitoring.
- Low-power operation extends battery life in portable devices.
- Small package size saves board space.
- Reset timeout period options cater to different system requirements.
Disadvantages
- Limited number of reset threshold voltage options.
- Not suitable for high-temperature applications beyond the specified operating range.
Working Principles
The TL7757IDR operates by continuously monitoring the supply voltage using an internal precision voltage reference. When the voltage falls below the specified threshold, the IC generates a reset signal on the RESET pin. This reset signal remains active until the supply voltage rises above the threshold for the specified timeout period. The IC consumes low quiescent current during operation, making it suitable for power-sensitive applications.
Application Field Plans
The TL7757IDR is commonly used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some application fields include:
- Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or brownout conditions.
- Industrial Control Systems: Provides fault detection and recovery capabilities in industrial automation equipment.
- Automotive Electronics: Monitors the vehicle's electrical system to prevent damage to sensitive components during voltage fluctuations.
- Medical Devices: Ensures safe operation and protects critical circuits in medical equipment.
- Consumer Electronics: Enhances the reliability of devices such as smart home appliances, gaming consoles, and audio/video equipment.
Alternative Models
- TL7705ACP: 4.55V Fixed Threshold Voltage, 200ms Timeout Period
- MAX809: Various Threshold Voltage Options, Adjustable Timeout Period
- ADM708: 2.63V Fixed Threshold Voltage, 140ms Timeout Period
- MCP101: 4.38V Fixed Threshold Voltage, 560ms Timeout Period
These alternative models offer similar functionality and can be considered based on specific application requirements.
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Enumerați 10 întrebări și răspunsuri comune legate de aplicarea lui TL7757IDR în soluțiile tehnice
Sure! Here are 10 common questions and answers related to the application of TL7757IDR in technical solutions:
Q: What is TL7757IDR? A: TL7757IDR is a voltage supervisor and watchdog timer IC (integrated circuit) commonly used in technical solutions.
Q: What is the purpose of TL7757IDR? A: The purpose of TL7757IDR is to monitor the power supply voltage and provide reset signals to microcontrollers or other digital devices when the voltage falls below a certain threshold.
Q: What is the operating voltage range of TL7757IDR? A: TL7757IDR operates within a voltage range of 1.1V to 6.0V.
Q: How does TL7757IDR detect low voltage conditions? A: TL7757IDR uses an internal voltage reference and comparator to compare the monitored voltage with a preset threshold. If the voltage drops below this threshold, it triggers a reset signal.
Q: Can TL7757IDR be used in battery-powered applications? A: Yes, TL7757IDR can be used in battery-powered applications as it has a low quiescent current consumption, making it suitable for power-sensitive designs.
Q: Does TL7757IDR have any built-in delay before generating a reset signal? A: Yes, TL7757IDR has a fixed delay of approximately 200ms after detecting a low voltage condition before generating a reset signal.
Q: Can TL7757IDR be used as a watchdog timer? A: Yes, TL7757IDR has a watchdog timer feature that can be enabled by connecting an external capacitor to the CT pin. It generates a reset signal if the microcontroller or system fails to toggle a specific pin within a set time period.
Q: What is the maximum reset timeout period of TL7757IDR? A: The maximum reset timeout period of TL7757IDR is approximately 1.6 seconds when using an external capacitor for watchdog timer functionality.
Q: Is TL7757IDR available in different package options? A: Yes, TL7757IDR is available in various package options, including SOIC (Small Outline Integrated Circuit) and TSSOP (Thin Shrink Small Outline Package).
Q: Are there any application notes or reference designs available for TL7757IDR? A: Yes, Texas Instruments provides application notes and reference designs that can help with the implementation of TL7757IDR in different technical solutions. These resources can be found on their official website.