SP691AEP-L

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a certain threshold - Prevents erratic behavior or data corruption in the system - Ensures reliable operation by monitoring the power supply

Package: 8-pin Plastic Small Outline Package (SOIC)

Essence: Voltage supervision and reset generation

Packaging/Quantity: Available in reels, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Reset Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active Low

Detailed Pin Configuration

1. GND: Ground connection
2. RESET: Active low reset output
3. VCC: Positive power supply input
4. MR: Manual reset input
5. TH: Threshold voltage selection input
6. TR: Reset timeout period selection input
7. NC: No connection
8. NC: No connection

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage drops below the selected threshold
• Reset signal remains active until the voltage rises above the threshold and the timeout period elapses
• Provides manual reset capability through the MR pin
• Selectable threshold voltage and reset timeout period for flexibility in different applications

Advantages

• Reliable voltage supervision ensures system stability
• Active low reset output compatible with various microcontrollers and digital systems
• Wide supply voltage range allows usage in different power supply configurations
• Manual reset input provides additional control over the reset signal

Disadvantages

• Limited threshold voltage options may not cover all voltage monitoring requirements
• Fixed reset timeout period may not be suitable for all applications
• No internal pull-up or pull-down resistors on the inputs, requiring external components for proper operation

Working Principles

The SP691AEP-L is a voltage supervisor IC that monitors the power supply voltage of a system. It compares the supply voltage with a selected threshold voltage and generates a reset signal when the voltage falls below this threshold. The reset signal remains active until the voltage rises above the threshold and the reset timeout period elapses.

The device operates by continuously monitoring the voltage at the VCC pin. When the voltage drops below the selected threshold, the RESET pin goes low, indicating a reset condition. The reset signal remains active until the voltage rises above the threshold and the reset timeout period, determined by the TR pin, elapses.

The MR pin allows for manual reset capability. Pulling this pin low forces the RESET pin to go low, regardless of the voltage level at VCC. This feature enables external control over the reset signal.

Detailed Application Field Plans

The SP691AEP-L is commonly used in various electronic systems where reliable voltage supervision is critical. Some application fields include:

1. Microcontroller-based Systems: Ensures stable operation and prevents data corruption during power fluctuations.
2. Industrial Control Systems: Provides reliable reset functionality for critical equipment and processes.
3. Automotive Electronics: Monitors the vehicle's power supply to prevent malfunctions and ensure safety.
4. Medical Devices: Guarantees proper functioning and prevents errors caused by voltage variations.
5. Communication Systems: Protects sensitive circuitry from power supply disturbances and ensures uninterrupted operation.

Detailed and Complete Alternative Models

1. SP669AEP-L: Similar voltage supervisor IC with adjustable threshold voltage and reset timeout period.
2. MAX691AEP+: Voltage supervisor IC with similar features but different package and pin configuration.
3. TPS3808G01DBVR: Ultra-small, low-power voltage supervisor IC with adjustable threshold voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

Word count: 530 words