MAX809TEUR+TG05

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics:
  • Low-power microprocessor reset circuit
  • Precision voltage monitor
  • Manual reset input
  • Active-low push-pull reset output
• Package: SOT-23-3
• Essence: MAX809TEUR+TG05 is a voltage supervisor IC that monitors the power supply voltage of a microprocessor and provides a reset signal when the voltage drops below a certain threshold.
• Packaging/Quantity: Tape & Reel (3000 pieces per reel)

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Reset Timeout Period: 140ms (typical)

Pin Configuration

The MAX809TEUR+TG05 has a SOT-23-3 package with the following pin configuration:

```

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| | --| RST|-- VCC --| GND|-- |____| ```

• RST: Reset Output
• VCC: Supply Voltage
• GND: Ground

Functional Features

• Low-power consumption: The MAX809TEUR+TG05 operates at a low quiescent current of only 3µA, making it suitable for battery-powered applications.
• Precision voltage monitoring: It accurately monitors the power supply voltage and provides a reset signal when it falls below the specified threshold.
• Manual reset input: The IC includes a manual reset input pin that allows an external signal to force a reset.
• Active-low push-pull reset output: The reset output is an active-low signal that can be used to reset the microprocessor or other system components.

Advantages and Disadvantages

Advantages: - Low-power operation - Precision voltage monitoring - Manual reset capability - Small package size

Disadvantages: - Limited reset threshold voltage options - Single-channel design

Working Principles

The MAX809TEUR+TG05 operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage drops below the specified threshold, the IC asserts a reset signal on the RST pin. This signal remains active until the voltage rises above the threshold or a manual reset input is triggered.

Detailed Application Field Plans

The MAX809TEUR+TG05 is commonly used in various applications where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

1. Microcontrollers: It ensures proper initialization and reliable operation of microcontroller-based systems.
2. Embedded Systems: It provides a fail-safe mechanism for embedded systems, preventing erratic behavior during power fluctuations.
3. Industrial Control Systems: It helps maintain stable operation of control systems by resetting them in case of power supply issues.
4. Automotive Electronics: It ensures the correct functioning of automotive electronic modules by monitoring the power supply voltage.
5. Battery-Powered Devices: It helps conserve battery life by initiating a reset when the voltage drops below a certain level.

Detailed and Complete Alternative Models

1. MAX809SEUR+TG05: Similar to MAX809TEUR+TG05 but with different reset threshold voltage options (2.63V, 2.93V, 3.08V, 3.63V).
2. MAX809MEUR+TG05: Similar to MAX809TEUR+TG05 but with a higher reset timeout period (280ms typical).

These alternative models provide similar functionality but offer different specifications to cater to specific application requirements.

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