S-8240AAN-I6T1U

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low-power voltage detector with watchdog timer
• Package: SOT-23-5
• Essence: Monitors the power supply voltage and provides a reset signal to the microcontroller when the voltage drops below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Detection Voltage Accuracy: ±1.0%
• Operating Temperature Range: -40°C to +85°C
• Watchdog Timer Timeout Period: 1.6s (typical)

Detailed Pin Configuration

The S-8240AAN-I6T1U has a total of 5 pins: 1. VDD: Power supply input 2. GND: Ground connection 3. RESET: Output pin for the reset signal 4. TEST: Test mode pin (for factory testing purposes) 5. MR: Manual reset pin (active low)

Functional Features

• Low-power consumption: The IC operates in a low-power mode, making it suitable for battery-powered devices.
• Voltage monitoring: It continuously monitors the power supply voltage and generates a reset signal when the voltage drops below the detection threshold.
• Watchdog timer: The built-in watchdog timer ensures system integrity by resetting the microcontroller if it fails to provide a periodic pulse.

Advantages and Disadvantages

Advantages: - Compact package size allows for easy integration into space-constrained designs. - Wide operating voltage range enables compatibility with various power supply sources. - Accurate voltage detection ensures reliable system operation.

Disadvantages: - Limited timeout period of the watchdog timer may not be suitable for applications requiring longer intervals between pulses. - Lack of adjustable detection voltage may restrict its use in certain scenarios.

Working Principles

The S-8240AAN-I6T1U operates by continuously monitoring the power supply voltage connected to the VDD pin. It compares the voltage against a preset detection threshold and generates a reset signal on the RESET pin when the voltage drops below this threshold. The IC also incorporates a watchdog timer that requires a periodic pulse from the microcontroller. If the pulse is not received within the specified timeout period, the IC triggers a reset signal, ensuring system integrity.

Detailed Application Field Plans

The S-8240AAN-I6T1U finds applications in various fields, including: 1. Battery-powered devices: It ensures proper functioning by monitoring the battery voltage and resetting the microcontroller if the voltage drops too low. 2. Industrial automation: The IC provides voltage monitoring and reset functionality for microcontrollers used in industrial control systems. 3. Automotive electronics: It enhances the reliability of automotive electronic systems by detecting voltage fluctuations and initiating resets when necessary.

Detailed and Complete Alternative Models

1. S-8254AAK-T8T1U: Similar low-power voltage detector with a wider operating temperature range (-40°C to +105°C).
2. S-8261ABJMD-G3JT2G: Voltage detector with a built-in delay circuit and adjustable detection voltage.
3. S-8232AJFT-T2: Dual voltage detector with separate reset outputs for different voltage thresholds.

(Note: This list is not exhaustive and other alternative models may exist.)

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