MAX6839XSD2+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Supervisor
• Characteristics: High accuracy, low power consumption, small package size
• Package: 6-pin SOT23
• Essence: Monitors and supervises the voltage levels of a power supply
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Threshold Voltage Options: 1.575V, 2.05V, 2.32V, 2.63V, 3.08V, 3.45V, 4.38V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Quiescent Current: 1µA (typical)

Detailed Pin Configuration

The MAX6839XSD2+T has the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold voltage selection input
6. TO: Reset timeout period selection input

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides manual reset capability through the MR pin.
• Offers multiple threshold voltage options for flexibility in different applications.
• Allows selection of reset timeout period to suit specific system requirements.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages: - High accuracy in monitoring power supply voltage. - Low power consumption, suitable for battery-powered devices. - Small package size enables space-saving designs.

Disadvantages: - Limited threshold voltage and reset timeout period options. - Not suitable for high-voltage applications.

Working Principles

The MAX6839XSD2+T operates by continuously monitoring the voltage level of the power supply connected to its VCC pin. When the voltage falls below the selected threshold voltage (determined by the TH pin), the IC generates an active-low reset signal on the RESET pin. This signal can be used to reset or initiate a safe shutdown of the system.

The reset timeout period, determined by the TO pin, defines the duration for which the reset signal remains active after the power supply voltage rises above the threshold voltage. The timeout period can be adjusted to meet specific system requirements.

Detailed Application Field Plans

The MAX6839XSD2+T is commonly used in various electronic systems where reliable power supply monitoring is crucial. Some application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearables benefit from the low power consumption and accurate voltage monitoring provided by the MAX6839XSD2+T.

2. Industrial Control Systems: The IC ensures stable operation of control systems by monitoring power supply voltages and initiating appropriate actions in case of voltage fluctuations.

3. Automotive Electronics: In automotive applications, the MAX6839XSD2+T helps maintain the integrity of critical systems by providing accurate power supply supervision.

4. Medical Equipment: Medical devices require precise power supply monitoring to ensure patient safety. The MAX6839XSD2+T offers the necessary accuracy and reliability for such applications.

Detailed and Complete Alternative Models

1. MAX6816EUS+T: 5-pin SOT23 package, similar functionality with adjustable threshold voltage and reset timeout period options.
2. MAX6381XR26D3-T: 4-pin SOT23 package, fixed threshold voltage and reset timeout period options.
3. MAX809REUR+T: 3-pin SOT23 package, simple power supply supervisor with fixed threshold voltage.

These alternative models provide similar functionality to the MAX6839XSD2+T but may have different package sizes, pin configurations, or additional features.

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