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STM6821SWY6F
Product Overview
- Category: Integrated Circuit (IC)
- Use: Power management
- Characteristics: High efficiency, low power consumption
- Package: SOT-23-6
- Essence: Voltage supervisor with manual reset input
- Packaging/Quantity: Tape and reel, 3000 units per reel
Specifications
- Supply Voltage Range: 1.8V to 5.5V
- Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V
- Manual Reset Input: Active-low, open-drain output
- Operating Temperature Range: -40°C to +85°C
- Quiescent Current: 1.5µA (typical)
Detailed Pin Configuration
The STM6821SWY6F IC has a total of six pins arranged as follows:
____
RESET | |
| |
GND | |
| |
VDD | |
| |
MR | |
______|____|
- RESET: Output pin for reset signal
- GND: Ground reference
- VDD: Supply voltage input
- MR: Manual reset input
Functional Features
- Monitors the supply voltage and asserts the reset signal when it falls below the specified threshold.
- Provides a manual reset input for external control of the reset signal.
- Open-drain output for compatibility with various microcontrollers and logic levels.
- Low quiescent current ensures minimal power consumption.
Advantages and Disadvantages
Advantages
- High accuracy in monitoring the supply voltage.
- Wide operating voltage range allows for versatile applications.
- Small package size enables space-saving designs.
- Low power consumption contributes to energy efficiency.
Disadvantages
- Limited reset threshold voltage options may not suit all applications.
- Manual reset input requires external control, adding complexity to the system design.
Working Principles
The STM6821SWY6F is a voltage supervisor IC that continuously monitors the supply voltage. When the voltage drops below the specified threshold, the IC asserts the reset signal, indicating a power failure or unstable voltage condition. Additionally, it provides a manual reset input that allows external control of the reset signal. The open-drain output ensures compatibility with various microcontrollers and logic levels.
Detailed Application Field Plans
The STM6821SWY6F finds applications in various fields where reliable power management is crucial. Some potential application areas include:
- Battery-powered devices: Ensures proper shutdown or restart when the battery voltage drops below a safe level.
- Industrial automation: Monitors power supply integrity in control systems, preventing data corruption or equipment damage during voltage fluctuations.
- Automotive electronics: Protects sensitive components from voltage transients and ensures safe operation under varying conditions.
- Consumer electronics: Provides a stable power-on reset for microcontrollers, ensuring reliable system startup.
Detailed and Complete Alternative Models
- MAX6821: Similar voltage supervisor IC with manual reset input, available in SOT-23 package.
- TC54: Voltage supervisor IC with adjustable reset threshold, offered in SOT-23-5 package.
- MIC803: Microprocessor supervisory circuit with manual reset input, available in SOT-23-6 package.
These alternative models offer similar functionality and can be considered based on specific requirements and availability.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de STM6821SWY6F en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of STM6821SWY6F in technical solutions:
Q1: What is STM6821SWY6F? A1: STM6821SWY6F is a voltage supervisor and reset IC manufactured by STMicroelectronics. It is commonly used in technical solutions to monitor power supply voltages and generate reset signals.
Q2: What are the key features of STM6821SWY6F? A2: Some key features of STM6821SWY6F include adjustable threshold voltage, manual reset input, watchdog timer, power-on reset delay, and low quiescent current.
Q3: How does STM6821SWY6F help in technical solutions? A3: STM6821SWY6F helps in technical solutions by ensuring stable power supply voltages and providing reliable reset signals to microcontrollers or other devices during power-up, power-down, or fault conditions.
Q4: Can STM6821SWY6F be used with different power supply voltages? A4: Yes, STM6821SWY6F can be used with a wide range of power supply voltages, typically from 1.8V to 5.5V.
Q5: How can I adjust the threshold voltage of STM6821SWY6F? A5: The threshold voltage of STM6821SWY6F can be adjusted using external resistors connected to the VTH pin.
Q6: Does STM6821SWY6F have any built-in protection features? A6: Yes, STM6821SWY6F has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Q7: Can STM6821SWY6F generate both active-high and active-low reset signals? A7: Yes, STM6821SWY6F can be configured to generate either active-high or active-low reset signals based on the RST pin connection.
Q8: What is the purpose of the watchdog timer in STM6821SWY6F? A8: The watchdog timer in STM6821SWY6F helps monitor the activity of a microcontroller or system and generates a reset signal if it fails to periodically toggle a specific pin within a set time period.
Q9: Is STM6821SWY6F suitable for battery-powered applications? A9: Yes, STM6821SWY6F has a low quiescent current consumption, making it suitable for battery-powered applications where power efficiency is crucial.
Q10: Can I use multiple STM6821SWY6F devices in parallel for redundancy? A10: Yes, multiple STM6821SWY6F devices can be used in parallel to provide redundancy and enhance the reliability of the power supply monitoring and reset functions in technical solutions.
Please note that these answers are general and may vary depending on the specific application and requirements.