MAX809LEUR+TG55

Product Overview

• Category: Integrated Circuits
• Use: Voltage Supervisor
• Characteristics: Low-power, microprocessor reset circuit
• Package: SOT-23-3
• Essence: Monitors the power supply voltage of a microprocessor and asserts a reset signal if the voltage drops below a specified threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809LEUR+TG55 has three pins in the SOT-23-3 package:

1. GND: Ground pin
2. RESET: Active-low reset output
3. VCC: Power supply input

Functional Features

• Monitors the power supply voltage continuously
• Asserts a reset signal when the voltage drops below the specified threshold
• Provides a debounced reset output
• Low quiescent current consumption
• Precision voltage reference

Advantages

• Small package size allows for space-saving designs
• Wide supply voltage range enables compatibility with various microprocessors
• Multiple reset threshold and timeout options provide flexibility for different applications
• Low power consumption extends battery life in portable devices
• Accurate voltage monitoring ensures reliable system operation

Disadvantages

• Limited number of reset threshold and timeout options may not meet the requirements of all applications
• Lack of adjustable reset threshold and timeout values restricts customization possibilities

Working Principles

The MAX809LEUR+TG55 operates by comparing the supply voltage with a fixed internal reference voltage. When the supply voltage drops below the specified threshold, the reset output is asserted low, indicating a system reset condition. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX809LEUR+TG55 is commonly used in various applications where reliable power supply monitoring and microprocessor reset functionality are required. Some typical application fields include:

1. Embedded Systems: Provides a fail-safe mechanism for microcontrollers and ensures proper system initialization.
2. Industrial Control Systems: Ensures stable operation of control units and prevents data corruption during power fluctuations.
3. Automotive Electronics: Protects sensitive electronic components from voltage transients and guarantees safe system startup.
4. Medical Devices: Ensures uninterrupted operation of critical medical equipment by monitoring power supply integrity.
5. Consumer Electronics: Prevents system malfunctions and data loss in devices such as smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

• MAX809SEUR+TG55
• MAX809TEUR+TG55
• MAX809VEUR+TG55
• MAX809XEUR+TG55

These alternative models offer similar functionality and characteristics but may have different package options or additional features tailored to specific requirements.

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