SP691ACT-L

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Reset Output
• Package: SOT-23-5
• Essence: Monitors voltage levels and provides a reset signal when necessary
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 6.0V
• Reset Threshold Voltage: Adjustable from 1.2V to 5.0V
• Reset Timeout Period: Fixed or adjustable using external capacitor
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SP691ACT-L is a 5-pin IC with the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. VCC: Positive supply voltage input
4. MR: Manual reset input (optional)
5. ADJ: Voltage threshold adjustment pin (optional)

Functional Features

• Monitors the supply voltage and asserts the reset signal when it falls below the specified threshold.
• Provides a precision reset output that remains asserted until the supply voltage rises above the threshold for a specified timeout period.
• Offers an optional manual reset input for immediate system reset.
• Allows adjustment of the voltage threshold using an external resistor divider network connected to the ADJ pin.

Advantages and Disadvantages

Advantages: - Low-power consumption - Precise voltage monitoring - Small form factor package - Adjustable voltage threshold

Disadvantages: - Limited number of pins for additional features - Requires external components for certain functionalities

Working Principles

The SP691ACT-L operates by continuously monitoring the supply voltage. When the voltage drops below the set threshold, the reset output is asserted, indicating a power failure or an unstable voltage condition. The reset output remains active until the supply voltage rises above the threshold for a specified timeout period, ensuring a stable power supply before releasing the reset signal.

Detailed Application Field Plans

The SP691ACT-L is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some typical application fields include:

1. Microcontrollers: Ensuring proper initialization and safe operation of microcontroller-based systems.
2. Embedded Systems: Providing a reset signal to ensure correct startup and prevent system lock-ups.
3. Power Management: Protecting sensitive electronic components from voltage fluctuations and brownout conditions.
4. Industrial Control Systems: Monitoring critical voltage levels in control panels and initiating system resets when necessary.
5. Automotive Electronics: Safeguarding automotive electronic systems from voltage transients and ensuring proper functioning.

Detailed and Complete Alternative Models

1. SP669ACT-L: Similar voltage supervisor IC with adjustable threshold and manual reset input.
2. MAX809: Voltage supervisor IC with fixed threshold and adjustable timeout period.
3. ADM6316: Precision voltage monitor with adjustable threshold and watchdog timer functionality.

These alternative models offer similar voltage monitoring and reset capabilities, providing options based on specific requirements and preferences.

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