MCP1321T-46LE/OT

Product Overview

Category

The MCP1321T-46LE/OT belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the voltage levels in electronic circuits.

Characteristics

• Voltage supervision range: 4.6V
• Low quiescent current: 1.5µA (typical)
• Wide operating voltage range: 2.0V to 6.0V
• Active-low reset output
• Manual reset input
• Power-on reset delay time: 250ms (typical)
• Small package size: SOT-23-3

Package and Quantity

The MCP1321T-46LE/OT is available in a small SOT-23-3 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Reset Threshold Voltage: 4.6V
• Quiescent Current: 1.5µA (typical)
• Reset Timeout Period: 250ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MCP1321T-46LE/OT has three pins arranged as follows:

```

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| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET |-- Pin 2: Reset Output (Active-Low) |___________|-- Pin 3: Supply Voltage (VDD) ```

Functional Features

• Voltage Monitoring: The MCP1321T-46LE/OT continuously monitors the supply voltage and provides a reset signal when it falls below the preset threshold.
• Active-Low Reset Output: The reset output goes low when the supply voltage drops below the threshold, indicating a power failure or fault condition.
• Manual Reset Input: The device can be manually reset by applying a low-level signal to the reset input pin.
• Power-On Reset Delay: The MCP1321T-46LE/OT includes a delay circuit that ensures a stable supply voltage before releasing the reset signal.

Advantages and Disadvantages

Advantages

• Low quiescent current consumption helps conserve power in battery-operated devices.
• Wide operating voltage range allows compatibility with various electronic systems.
• Small package size enables space-saving designs.
• Active-low reset output simplifies interfacing with other components.

Disadvantages

• Fixed reset threshold voltage may not be suitable for all applications requiring different voltage levels.
• Lack of adjustable timeout period limits flexibility in certain scenarios.

Working Principles

The MCP1321T-46LE/OT operates based on a voltage comparator circuit. It compares the supply voltage with the preset threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or fault condition. The reset output remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Application Field Plans

The MCP1321T-46LE/OT finds applications in various fields, including: 1. Battery-powered devices: Ensuring proper operation and preventing damage due to low voltage conditions. 2. Industrial control systems: Monitoring power supply stability and initiating appropriate actions in case of voltage fluctuations. 3. Automotive electronics: Protecting sensitive components from voltage variations and ensuring reliable operation. 4. Home automation: Providing voltage supervision for smart home devices, enhancing their reliability.

Alternative Models

Some alternative models to the MCP1321T-46LE/OT include: - MAX809: A similar voltage supervisor with adjustable reset threshold and timeout period. - ADM6315: Offers additional features like watchdog timer and manual reset input. - TPS3808: Provides adjustable threshold voltage and programmable delay time.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the MCP1321T-46LE/OT is a voltage supervisor with a fixed threshold voltage of 4.6V. It offers low quiescent current, a wide operating voltage range, and a small package size. The device provides an active-low reset output and includes a manual reset input. While it has advantages such as power efficiency and compact design, its fixed threshold voltage and lack of adjustable timeout period may limit its applicability in certain scenarios. Nonetheless, it finds applications in various fields, and alternative models with different features are available for users to consider.