MIC3808BM

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Reset Output
• Package: SOIC-8
• Essence: Monolithic CMOS IC
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MIC3808BM features an SOIC-8 package with the following pin configuration:

1. VCC: Supply Voltage Input
2. GND: Ground
3. RESET: Active-Low Reset Output
4. MR: Manual Reset Input
5. TH: Threshold Selection Input
6. CT: Capacitor Connection for Reset Timeout
7. NC: No Connect
8. VCC: Supply Voltage Input

Functional Features

• Precision monitoring of supply voltage
• Reset output remains low during power-up and power-down
• Manual reset input for immediate system reset
• Selectable threshold voltage and reset timeout period
• Low quiescent current consumption

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems
• Precision monitoring ensures reliable operation
• Reset output behavior prevents false triggering
• Manual reset input provides flexibility in system control
• Low power consumption extends battery life

Disadvantages

• Limited number of threshold voltage and reset timeout options
• Not suitable for high-temperature applications above 85°C

Working Principles

The MIC3808BM is designed to monitor the supply voltage of a system and provide a reset signal when the voltage falls below a certain threshold. It operates based on a precision voltage reference and a comparator circuit. The threshold voltage and reset timeout period can be selected using external resistors and capacitors.

During normal operation, the IC continuously compares the supply voltage with the set threshold voltage. If the voltage drops below the threshold, the reset output goes low, indicating a system reset. The reset output remains low until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MIC3808BM is widely used in various electronic systems where reliable voltage monitoring and system reset functionality are required. Some common application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Power management circuits
4. Battery-powered devices
5. Industrial control systems
6. Automotive electronics

Detailed and Complete Alternative Models

1. MAX809: Voltage Supervisor IC with Manual Reset Input
2. ADM708: Precision Voltage Monitor with Adjustable Threshold
3. TPS383: Low-Power Voltage Supervisor with Programmable Delay
4. LTC2910: Dual Supply Monitor with Adjustable Thresholds

These alternative models offer similar functionality and can be considered as substitutes for the MIC3808BM in different applications.

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