MAX809TEUR+TGA4

Product Overview

• Category: Integrated Circuit (IC)
• 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 falls below a predetermined threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 3.42V, 3.63V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX809TEUR+TGA4 has three pins:

1. GND: Ground connection
2. RESET: 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 set threshold
• Provides a debounced reset output
• Low quiescent current consumption
• Precision voltage reference

Advantages

• Small package size allows for space-saving designs
• Wide operating voltage range enables compatibility with various microprocessors
• Multiple reset threshold and timeout options provide flexibility in system design
• Low power consumption extends battery life in portable applications
• Reliable reset signal generation ensures proper system initialization

Disadvantages

• Limited number of reset threshold and timeout options may not meet the requirements of all applications
• SOT-23-3 package may be challenging to solder for inexperienced users

Working Principles

The MAX809TEUR+TGA4 operates by comparing the supply voltage with a reference voltage. When the supply voltage drops below the set threshold, the internal comparator triggers and asserts a reset signal. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX809TEUR+TGA4 is commonly used in microprocessor-based systems where reliable power supply monitoring and reset functionality are crucial. Some specific application fields include:

1. Embedded Systems: Ensuring proper initialization and system stability in embedded devices.
2. Industrial Control Systems: Preventing data corruption and ensuring safe operation during power fluctuations.
3. Automotive Electronics: Providing reliable reset functionality in automotive control units.
4. Medical Devices: Ensuring proper system startup and preventing data loss in medical equipment.

Detailed and Complete Alternative Models

1. MAX809SEUR+T: Same functionality but with different reset threshold options.
2. MAX811TEUS+T: Similar voltage supervisor IC with additional manual reset input.
3. MAX803REXR+T: Voltage supervisor with adjustable reset threshold and watchdog timer functionality.

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

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