MAX16021LTET+T

Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics: Low-power, precision voltage monitoring, programmable reset threshold, manual reset input, watchdog timer, power supply glitch immunity
• Package: 6-pin Thin SOT23 package
• Essence: The MAX16021LTET+T is a voltage monitor and reset circuit designed for low-power applications. It provides accurate monitoring of the power supply voltage and generates a reset signal when the voltage falls below a programmable threshold.
• Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Options: Programmable from 1.2V to 4.63V in 100mV steps
• Reset Timeout Period: Programmable from 1ms to 640ms in 20ms steps
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Pin Configuration

The MAX16021LTET+T has the following pin configuration:

1. GND: Ground connection
2. MR: Manual reset input
3. VCC: Power supply voltage input
4. RESET: Active-low reset output
5. TH: Threshold programming pin
6. WDI: Watchdog input

Functional Features

• Accurate voltage monitoring: The MAX16021LTET+T ensures precise monitoring of the power supply voltage, allowing for reliable detection of undervoltage conditions.
• Programmable reset threshold: The reset threshold can be easily programmed to suit specific application requirements, providing flexibility in determining the voltage level at which the reset signal is generated.
• Manual reset input: The MR pin allows for manual resetting of the device, giving users control over the reset operation.
• Watchdog timer: The WDI pin can be used to implement a watchdog timer function, enabling the detection of system malfunctions and automatic reset generation.
• Power supply glitch immunity: The circuit is designed to tolerate power supply glitches, ensuring stable operation even in noisy environments.

Advantages

• Low-power consumption: The MAX16021LTET+T operates with a low quiescent current of only 3µA, making it suitable for battery-powered applications.
• Precision voltage monitoring: The IC provides accurate voltage monitoring, ensuring reliable system operation.
• Flexible threshold programming: The programmable reset threshold allows customization based on specific application requirements.
• Small package size: The Thin SOT23 package offers a compact form factor, saving board space in space-constrained designs.

Disadvantages

• Limited number of pins: With only six pins, the MAX16021LTET+T may have limitations in terms of additional functionalities or interfaces that can be integrated directly into the IC.

Working Principles

The MAX16021LTET+T monitors the power supply voltage by comparing it to the programmed threshold voltage. When the supply voltage falls below the threshold, the reset output is activated, indicating an undervoltage condition. The reset signal remains active until the supply voltage rises above the threshold or a timeout period elapses. The manual reset input (MR) can be used to force a reset regardless of the voltage level. The watchdog input (WDI) can be connected to an external signal source to monitor system activity and generate a reset if necessary.

Application Field Plans

The MAX16021LTET+T is commonly used in various applications where accurate voltage monitoring and reset functionality are required. Some potential application fields include:

1. Battery-powered devices: The low-power operation and precise voltage monitoring make the MAX16021LTET+T suitable for battery-powered devices such as portable electronics, medical devices, and IoT sensors.
2. Industrial control systems: The IC can be used in industrial control systems to monitor power supply voltages and ensure reliable operation of critical equipment.
3. Automotive electronics: The MAX16021LTET+T can be employed in automotive electronics to monitor the vehicle's power supply and generate resets when necessary, enhancing system reliability.

Alternative Models

• MAX16020LTET+T: Similar to the MAX16021LTET+T but with a different pin configuration.
• MAX16022LTET+T: Offers additional features such as adjustable reset timeout period and active-high reset output.

Note: This entry provides a brief overview of the MAX16021LTET+T. For more detailed information, please refer to the datasheet provided by the manufacturer.

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