MAX6382XR44D5-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a certain threshold.
  • Provides a reliable way to ensure proper system operation by resetting the microcontroller or other digital circuitry during power-up, power-down, or brownout conditions.
• Package: XR44 (4mm x 4mm, 10-pin TDFN)
• Essence: Voltage monitoring and reset functionality in a compact package.
• Packaging/Quantity: Tape and Reel, 2500 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6382XR44D5-T has the following pin configuration:

1. GND: Ground connection.
2. MR: Manual Reset input. Pulling this pin low forces a reset.
3. RESET: Active-low reset output.
4. VCC: Positive power supply connection.
5. TH: Threshold voltage selection pin.
6. CT: Capacitor connection for reset timeout period adjustment.
7. NC: No Connection.
8. NC: No Connection.
9. NC: No Connection.
10. NC: No Connection.

Functional Features

• Voltage Monitoring: The MAX6382XR44D5-T continuously monitors the supply voltage and compares it with the selected threshold voltage.
• Reset Generation: When the supply voltage falls below the threshold voltage, the device generates an active-low reset signal.
• Manual Reset: The manual reset input allows for an external reset signal to be applied, overriding the voltage monitoring function.
• Adjustable Reset Timeout: The reset timeout period can be adjusted using an external capacitor connected to the CT pin.
• Power-On Reset Delay: The device ensures a minimum delay before generating the reset signal during power-up to allow the supply voltage to stabilize.

Advantages and Disadvantages

Advantages: - Compact package size enables space-saving designs. - Wide supply voltage range allows for compatibility with various systems. - Adjustable reset timeout period provides flexibility in system design. - Reliable voltage monitoring helps prevent system malfunctions.

Disadvantages: - Limited threshold voltage options may not cover all application requirements. - No built-in hysteresis feature for voltage monitoring.

Working Principles

The MAX6382XR44D5-T operates by continuously monitoring the supply voltage using an internal voltage reference. When the supply voltage falls below the selected threshold voltage, the device generates an active-low reset signal. This reset signal remains active until the supply voltage rises above the threshold voltage and the reset timeout period elapses. The reset timeout period can be adjusted using an external capacitor connected to the CT pin.

Detailed Application Field Plans

The MAX6382XR44D5-T is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

1. Microcontroller Systems: Ensuring proper initialization and operation of microcontrollers during power-up and brownout conditions.
2. Industrial Control Systems: Providing reliable reset functionality for critical control circuits.
3. Automotive Electronics: Monitoring and resetting digital components in automotive systems to prevent malfunctions.
4. Battery-Powered Devices: Protecting sensitive circuitry from undervoltage conditions during battery discharge.

Detailed and Complete Alternative Models

1. MAX6381XR44D5-T: Similar to MAX6382XR44D5-T, but with fixed threshold voltage options.
2. MAX6383XR44D5-T: Similar to MAX6382XR44D5-T, but with additional hysteresis feature for voltage monitoring.
3. MAX6384XR44D5-T: Similar to MAX6382XR44D5-T, but with extended operating temperature range.

These alternative models offer similar functionality with slight variations to cater to different application requirements.

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