MAX16021PTEV+T

Product Overview

• Category: Integrated Circuits
• Use: Power Management
• Characteristics: Low-power voltage monitor with manual reset input
• Package: 16-pin TQFN (Thin Quad Flat No-Lead)
• Essence: Voltage monitoring and reset generation for microcontrollers and other digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Manual Reset Input Threshold: 0.4V to 0.9V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 2µA (typical)

Pin Configuration

The MAX16021PTEV+T has a 16-pin TQFN package with the following pin configuration:

1. VCC
2. GND
3. MR (Manual Reset Input)
4. RESET (Reset Output)
5. GND
6. GND
7. GND
8. GND
9. NC (No Connection)
10. NC
11. NC
12. NC
13. NC
14. NC
15. NC
16. NC

Functional Features

• Low-power voltage monitoring: The MAX16021PTEV+T monitors the supply voltage and generates a reset signal when it falls below a certain threshold.
• Manual reset input: The device includes a manual reset input (MR) that allows an external signal to force a reset.
• Adjustable reset timeout period: The reset timeout period can be adjusted using an external capacitor, allowing flexibility in system design.
• Power-on reset delay: The device provides a power-on reset delay to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages: - Low quiescent current for power-sensitive applications - Wide supply voltage range allows compatibility with various systems - Adjustable reset timeout period provides flexibility in system design

Disadvantages: - Limited number of available pins for additional functionality - Manual reset input may require external circuitry for proper operation

Working Principles

The MAX16021PTEV+T is designed to monitor the supply voltage of a microcontroller or digital system. It continuously compares the supply voltage against a programmable threshold. When the voltage falls below the threshold, the device generates a reset signal to initiate a system reset.

The manual reset input (MR) allows an external signal to force a reset, overriding the voltage monitoring function. This can be useful during system testing or when a manual reset is required.

The reset timeout period can be adjusted using an external capacitor connected to the CT pin. This allows designers to fine-tune the reset timing according to their specific application requirements.

Detailed Application Field Plans

The MAX16021PTEV+T is commonly used in various applications where reliable voltage monitoring and reset generation are critical. Some typical application fields include:

1. Microcontrollers: The device ensures proper system initialization by monitoring the supply voltage and generating a reset signal when necessary.
2. Industrial Control Systems: The MAX16021PTEV+T provides voltage monitoring and reset generation for industrial control systems, ensuring stable operation and preventing data corruption.
3. Embedded Systems: The device is suitable for embedded systems that require reliable power management and system reset capabilities.
4. Battery-Powered Devices: The low quiescent current of the MAX16021PTEV+T makes it ideal for battery-powered devices, extending battery life while providing voltage monitoring and reset functionality.

Detailed and Complete Alternative Models

1. MAX16020PTEV+T: Similar to the MAX16021PTEV+T, but with a fixed reset timeout period of 140ms.
2. MAX16022PTEV+T: Similar to the MAX16021PTEV+T, but with an additional active-low RESET output for external monitoring.
3. MAX16023PTEV+T: Similar to the MAX16021PTEV+T, but with a higher manual reset input threshold range (1.2V to 1.7V).

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

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