MAX803SEXR+T10

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, manual reset input, watchdog timer, power-on reset delay, push-pull output, small package size
• Package: SOT-23-3
• Essence: The MAX803SEXR+T10 is a voltage monitor and reset circuit designed to monitor the power supply voltage of a microcontroller or other digital systems. It ensures proper system operation by asserting a reset signal when the supply voltage drops below a specified threshold.
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 3.63V, 4.38V
• Manual Reset Input: Active-Low
• Watchdog Timer Timeout Period: 1.6s (typical)
• Power-On Reset Delay: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX803SEXR+T10 has three pins in the SOT-23-3 package: 1. GND: Ground connection 2. RESET: Reset output signal 3. VCC: Supply voltage input

Functional Features

• Voltage Monitoring: Monitors the supply voltage and asserts a reset signal when it falls below the threshold voltage.
• Manual Reset Input: Allows for an external reset signal to be applied, overriding the voltage monitoring function.
• Watchdog Timer: Provides a timeout period to detect and reset the system if it becomes unresponsive.
• Power-On Reset Delay: Ensures a stable power supply before releasing the reset signal during system startup.
• Push-Pull Output: The reset output is capable of driving both high and low states.

Advantages

• Low-power consumption
• Precise voltage monitoring
• Small package size for space-constrained applications
• Manual reset input for flexibility in system design
• Watchdog timer for enhanced system reliability

Disadvantages

• Limited threshold voltage options
• Single supply voltage range

Working Principles

The MAX803SEXR+T10 operates by comparing the supply voltage with a reference voltage set by the chosen threshold option. When the supply voltage drops below the threshold, the reset output is asserted, indicating a power failure or unstable voltage condition. The manual reset input allows for an external signal to override the voltage monitoring function and assert the reset signal. The watchdog timer ensures that the system is responsive by periodically resetting it if no activity is detected within the timeout period. The power-on reset delay provides a stable power supply before releasing the reset signal during system startup.

Detailed Application Field Plans

The MAX803SEXR+T10 is commonly used in various applications where reliable voltage monitoring and reset functionality are required. Some potential application fields include: - Microcontrollers and digital systems - Embedded systems - Industrial automation - Power management systems - Battery-powered devices - IoT devices

Detailed and Complete Alternative Models

• MAX803SEUK+T: SOT23-5 package, wider supply voltage range (1.0V to 6.0V)
• MAX803TEXR+T: SC70-3 package, lower power-on reset delay (100ms typical)
• MAX803ZEXR+T: SOT23-3 package, higher threshold voltage options (4.63V, 4.93V, 5.08V, 5.63V, 6.38V)

(Note: The alternative models listed above are just a few examples and not an exhaustive list.)

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