MAX691ACUE+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX691ACUE+ is a voltage monitor and reset circuit IC. It is designed to monitor the power supply voltage of electronic devices and provide a reset signal when the voltage falls below a certain threshold.

Characteristics: - Monitors power supply voltage - Provides reset signal - Low power consumption - Wide operating voltage range - Small package size

Package: The MAX691ACUE+ is available in a small 16-pin TSSOP (Thin Shrink Small Outline Package) package.

Essence: The essence of the MAX691ACUE+ is its ability to ensure proper functioning of electronic devices by monitoring the power supply voltage and initiating a reset when necessary.

Packaging/Quantity: The MAX691ACUE+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.2V to 4.625V
• Reset Timeout Period: Adjustable from 140ms to 1120ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)

Pin Configuration

The MAX691ACUE+ has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VCC - Power Supply Voltage Input
2. GND - Ground
3. RESET - Active-Low Reset Output
4. MR - Manual Reset Input
5. TH - Threshold Adjust Input
6. CT - Capacitor Connection for Reset Timeout
7. GND - Ground
8. GND - Ground
9. GND - Ground
10. GND - Ground
11. GND - Ground
12. GND - Ground
13. GND - Ground
14. GND - Ground
15. GND - Ground
16. VCC - Power Supply Voltage Input

Functional Features

• Monitors power supply voltage continuously
• Generates a reset signal when the voltage falls below the threshold
• Adjustable reset threshold and timeout period
• Manual reset capability
• Low quiescent current for power efficiency

Advantages and Disadvantages

Advantages: - Reliable voltage monitoring and reset functionality - Wide operating voltage range allows compatibility with various systems - Small package size saves board space - Adjustable threshold and timeout provide flexibility in different applications - Low power consumption for energy-efficient designs

Disadvantages: - Limited to monitoring and resetting power supply voltage only - Requires external components (capacitor) for proper operation

Working Principles

The MAX691ACUE+ operates by continuously monitoring the power supply voltage connected to its VCC pins. When the voltage falls below the adjustable threshold set by the TH pin, the RESET pin is activated, generating a low-level reset signal. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin.

Application Field Plans

The MAX691ACUE+ finds applications in various electronic devices where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include: - Microcontrollers and microprocessors - Embedded systems - Industrial control systems - Automotive electronics - Power management circuits

Alternative Models

For those seeking alternative options, the following ICs offer similar functionality to the MAX691ACUE+: 1. MAX809 - Voltage Monitor and Reset Circuit 2. ADM708 - Supervisory Circuit with Watchdog Timer 3. TPS3808 - Voltage Supervisor with Programmable Delay

These alternative models provide comparable features and can be considered based on specific requirements and compatibility with the target application.

In conclusion, the MAX691ACUE+ is a voltage monitor and reset circuit IC that ensures proper functioning of electronic devices by monitoring the power supply voltage. Its adjustable threshold, low power consumption, and small package size make it suitable for various applications in different industries.