MIC1557YM5-TR

Overview

Category: Integrated Circuit (IC) Use: Voltage Supervisor Characteristics: Low Power, Precision, Reset Output Packaging: SOT-23-5 Essence: Monolithic CMOS Circuit Packaging/Quantity: Tape and Reel, 3000 units per reel

Specification Parameters

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V
• Reset Timeout Period: 140ms, 280ms, 560ms, 1120ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MIC1557YM5-TR is a 5-pin integrated circuit with the following pin configuration:

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1. GND: Ground
2. RESET: Active-Low Reset Output
3. VCC: Positive Supply Voltage
4. TRIP: Threshold Trip Input
5. NC: No Connection

Functional Characteristics

The MIC1557YM5-TR is designed to monitor the supply voltage and provide a reset signal when the voltage falls below a certain threshold. It offers the following functional characteristics:

• Precision Monitoring: The IC accurately detects the supply voltage and triggers a reset signal when it drops below the programmed threshold.
• Low Power Consumption: With a quiescent current of only 1.5µA, the MIC1557YM5-TR minimizes power consumption, making it suitable for battery-powered applications.
• Reset Output: The active-low reset output provides a reliable signal to reset the system when the supply voltage is insufficient.
• Adjustable Threshold: The IC offers multiple threshold voltage options, allowing flexibility in setting the desired voltage level for triggering the reset signal.
• Reset Timeout Period: The MIC1557YM5-TR includes various reset timeout periods, enabling customization based on specific application requirements.

Advantages and Disadvantages

Advantages: - High Precision: The IC ensures accurate monitoring of the supply voltage, enhancing system reliability. - Low Power Consumption: Its low quiescent current makes it suitable for power-sensitive applications. - Flexible Threshold Options: Multiple threshold voltage choices provide versatility in different voltage monitoring scenarios.

Disadvantages: - Limited Pin Configuration: The 5-pin configuration may restrict additional functionalities or connections in complex circuit designs. - Single Functionality: The MIC1557YM5-TR is primarily designed for voltage supervision and reset generation, limiting its use to specific applications.

Working Principle

The MIC1557YM5-TR operates by comparing the supply voltage with the programmed threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, signaling a system reset. The reset output remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MIC1557YM5-TR finds applications in various fields where reliable voltage monitoring and system reset functionality are crucial. Some potential application areas include:

1. Battery-Powered Devices: The IC can be used in portable electronic devices, such as smartphones, tablets, and wearables, to ensure proper operation even under low battery conditions.
2. Industrial Control Systems: It is suitable for monitoring power supplies in industrial control systems, providing protection against voltage fluctuations and ensuring stable operation.
3. Automotive Electronics: The IC can be employed in automotive electronics to monitor the vehicle's electrical system and trigger a reset if the voltage falls below a critical level.
4. Home Automation: It can be utilized in smart home systems to monitor power supplies and initiate a reset if voltage irregularities occur, ensuring uninterrupted operation.

Detailed Alternative Models

While the MIC1557YM5-TR offers specific features and characteristics, alternative models with similar functionality are available in the market. Some notable alternatives include:

1. MAX809: A voltage supervisor IC with adjustable threshold voltage and various timeout options.
2. LTC2937: An integrated circuit offering precision voltage monitoring and programmable reset generation.
3. TPS3839: A low-power voltage supervisor with adjustable threshold voltage and a wide supply voltage range.

These alternative models provide similar voltage monitoring and reset functionalities, allowing users to choose the most suitable option based on their specific requirements.

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