MAX6875ETJ+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX6875ETJ+ is a voltage supervisor and sequencer IC. It is primarily used in power management applications to monitor and control the voltage levels of various components in a system.

Characteristics: - Voltage supervision and sequencing capabilities - High accuracy and precision - Low power consumption - Wide operating temperature range - Compact package size

Package: The MAX6875ETJ+ is available in a small form factor, 32-pin Thin Quad Flat Package (TQFP).

Essence: This IC plays a crucial role in ensuring stable and reliable power supply to electronic devices by monitoring voltage levels and controlling the power sequencing process.

Packaging/Quantity: The MAX6875ETJ+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The key specifications of the MAX6875ETJ+ are as follows:

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Output Voltage Accuracy: ±1%
• Quiescent Current: 30µA (typical)
• Power-On Reset Threshold: Adjustable from 0.4V to 5V
• Number of Supervised Outputs: 8

Pin Configuration

The pin configuration of the MAX6875ETJ+ is as follows:

```

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| | | U1 | |_______________|

   PIN CONFIGURATION

_______ _______ | | | | | 1 | | 16 | |_______| |_______| ```

1. VCC: Power supply input
2. GND: Ground reference
3. OUT1-OUT8: Supervised output pins
4. RESET: Active-low reset output
5. MR: Manual reset input
6. VTH: Voltage threshold adjust pin
7. SEQ: Sequencing control input
8. CLK: Clock input

Functional Features

The MAX6875ETJ+ offers the following functional features:

1. Voltage Supervision: Monitors the voltage levels of multiple outputs and provides accurate power-on reset signals.
2. Voltage Sequencing: Controls the power-up sequence of various components, ensuring proper initialization and preventing potential damage.
3. Adjustable Threshold: The voltage threshold can be easily adjusted to suit specific system requirements.
4. Manual Reset: Allows for manual reset of the IC, providing flexibility in system debugging and testing.
5. Clock Input: Enables synchronization with other system components for precise timing control.

Advantages and Disadvantages

Advantages: - High accuracy and precision in voltage monitoring and sequencing. - Low power consumption, contributing to energy efficiency. - Wide operating temperature range, suitable for various environments. - Compact package size, saving board space.

Disadvantages: - Limited number of supervised outputs (8), may not be sufficient for complex systems requiring more monitoring channels. - Requires external clock signal for precise timing control.

Working Principles

The MAX6875ETJ+ operates based on a combination of voltage monitoring and sequencing techniques. It continuously monitors the voltage levels of the supervised outputs and compares them to the adjustable threshold. If any voltage falls below the threshold, the IC generates a power-on reset signal to ensure a controlled restart. Additionally, the sequencing control input allows for proper power-up sequence management, preventing potential issues caused by simultaneous power-on events.

Detailed Application Field Plans

The MAX6875ETJ+ finds applications in various fields, including but not limited to:

1. Power Supply Units (PSUs): Ensures proper voltage monitoring and sequencing in PSUs, preventing damage to sensitive components during power-up.
2. Industrial Automation: Facilitates controlled power-on and reset operations in industrial automation systems, enhancing reliability and stability.
3. Automotive Electronics: Provides voltage supervision and sequencing capabilities in automotive electronic control units (ECUs), ensuring safe and reliable operation.
4. Telecommunications: Enables precise power-up sequencing in telecommunications equipment, minimizing the risk of system failures.

Detailed and Complete Alternative Models

1. MAX6874ETJ+: Similar to MAX6875ETJ+, but with 4 supervised outputs instead of 8.
2. MAX6876ETJ+: Enhanced version with additional features such as adjustable power-on reset delay and watchdog timer functionality.
3. MAX6877ETJ+: Offers extended temperature range (-40°C to +125°C) for applications requiring higher operating temperatures.

These alternative models provide similar functionality to the MAX6875ETJ+ while offering specific enhancements or variations to suit different application requirements.

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