MIC812LU TR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low Voltage Reset Circuit
• Package: SOT-23-3
• Essence: Monolithic CMOS IC
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage: 2.93V (typical)
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MIC812LU TR has a SOT-23-3 package with the following pin configuration:

• Pin 1: GND (Ground)
• Pin 2: VDD (Supply Voltage)
• Pin 3: RESET (Reset Output)

Functional Features

The MIC812LU TR is a low voltage reset circuit designed for power management applications. It provides a reliable reset signal to microcontrollers, microprocessors, or other digital devices when the supply voltage drops below a certain threshold. The key features of this IC include:

• Low Voltage Operation: Works with supply voltages as low as 1.6V, making it suitable for battery-powered devices.
• Precision Reset Threshold: The reset threshold voltage of 2.93V ensures accurate detection of low voltage conditions.
• Reset Timeout Period: The IC keeps the reset output active for a period of 140ms after the supply voltage rises above the threshold, allowing sufficient time for the system to stabilize.
• Wide Operating Temperature Range: Can operate reliably in extreme temperature conditions ranging from -40°C to +85°C.

Advantages and Disadvantages

Advantages: - Low voltage operation extends battery life in portable devices. - Precise reset threshold ensures reliable system reset. - Reset timeout period allows for proper system stabilization.

Disadvantages: - Limited to applications requiring a low voltage reset circuit. - SOT-23-3 package may not be suitable for all PCB layouts.

Working Principles

The MIC812LU TR monitors the supply voltage using an internal voltage reference and comparator. When the supply voltage drops below the preset threshold, the reset output is activated, signaling a low voltage condition. The reset output remains active for the specified timeout period after the supply voltage rises above the threshold, allowing the system to stabilize before resuming normal operation.

Detailed Application Field Plans

The MIC812LU TR can be used in various applications where reliable power management is crucial. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearables can benefit from the low voltage reset functionality provided by the MIC812LU TR.
2. Industrial Control Systems: Microcontrollers and digital devices used in industrial automation and control systems require stable power management, making this IC suitable for such applications.
3. Automotive Electronics: With its wide operating temperature range, the MIC812LU TR can be used in automotive applications that demand reliable power monitoring and reset capabilities.

Detailed and Complete Alternative Models

1. MAX809: Low Voltage Microprocessor Reset Circuits
2. ADM708: Precision Voltage Monitor with Watchdog Timer
3. TPS3808: Supply Voltage Supervisor with Programmable Delay Time

These alternative models offer similar functionalities to the MIC812LU TR and can be considered as alternatives based on specific requirements and preferences.

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