MAX6389XS29D1+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, reset generation
• Package: SOT23-5
• Essence: Monitors supply voltage and generates a reset signal when the voltage falls below a specified threshold
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 3.45V, 3.63V, 4.38V, 4.63V
• Reset Timeout Period: Adjustable or Fixed (140ms, 280ms, 560ms, 1120ms)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6389XS29D1+T has the following pin configuration:

1. GND: Ground connection
2. MR: Manual Reset input
3. RESET: Reset output
4. VCC: Positive supply voltage
5. TH: Threshold voltage selection input

Functional Features

• Monitors the supply voltage continuously
• Generates a reset signal when the voltage drops below the set threshold
• Provides manual reset capability through the MR pin
• Offers adjustable or fixed reset timeout period options
• Low quiescent current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages

• Precise voltage monitoring ensures reliable system operation
• Flexible threshold voltage options cater to various voltage requirements
• Adjustable or fixed reset timeout period allows customization
• Small package size enables space-constrained designs
• Low-power consumption extends battery life in portable devices

Disadvantages

• Limited to voltage monitoring and reset generation functionality
• Not suitable for applications requiring complex voltage regulation

Working Principles

The MAX6389XS29D1+T operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the threshold set by the TH pin, the device generates a reset signal on the RESET pin. The reset signal remains active until the supply voltage rises above the threshold or a timeout period elapses.

Detailed Application Field Plans

The MAX6389XS29D1+T finds application in various fields, including:

1. Battery-powered devices: Provides reliable power management and prevents damage due to low voltage conditions.
2. Microcontrollers and microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
3. Industrial control systems: Monitors power supply integrity and initiates system resets when necessary to maintain stable operation.
4. Automotive electronics: Protects sensitive components from voltage drops and ensures safe operation of critical systems.

Detailed and Complete Alternative Models

1. MAX6389XS29D1+T: The current model with adjustable or fixed reset timeout options.
2. MAX6389XS29D1: Similar to the current model but without the tape and reel packaging option.
3. MAX6389XS29D2+T: A variant with different threshold voltage options.
4. MAX6389XS29D3+T: Another variant with additional features like power-on reset delay.

These alternative models offer similar voltage monitoring and reset circuit functionalities, catering to different specifications and requirements.

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