LM3881MMX/NOPB

Product Overview

Category

The LM3881MMX/NOPB belongs to the category of voltage supervisors and reset ICs.

Use

It is used to monitor the power supply voltage level and provide a reset signal to the microcontroller or other digital system when the voltage drops below a predefined threshold.

Characteristics

• Low power consumption
• Wide operating voltage range
• Adjustable reset threshold
• Manual reset input
• Open-drain reset output

Package

The LM3881MMX/NOPB is available in a miniature 8-pin VSSOP package.

Packaging/Quantity

It is typically supplied in reels with a quantity of 2500 units per reel.

Specifications

• Operating Voltage Range: 1.6V to 18V
• Reset Threshold Voltage Range: 1.2V to 5V
• Quiescent Current: 10µA
• Manual Reset Input Voltage: 0.3V to VDD
• Reset Output Low Voltage: 0.4V (max)

Detailed Pin Configuration

1. MR (Pin 1) - Manual Reset Input
2. GND (Pin 2) - Ground
3. VDD (Pin 3) - Supply Voltage
4. RESET (Pin 4) - Open-Drain Reset Output
5. SENSE (Pin 5) - Voltage Monitoring Input
6. NC (Pin 6) - No Connection
7. NC (Pin 7) - No Connection
8. NC (Pin 8) - No Connection

Functional Features

• Voltage monitoring with adjustable threshold
• Manual reset input for external reset control
• Open-drain reset output for interfacing with microcontrollers
• Low quiescent current for power efficiency

Advantages and Disadvantages

Advantages

• Flexible reset threshold adjustment
• Low power consumption
• Small package size
• Manual reset input for additional control

Disadvantages

• Limited to open-drain reset output
• No internal timer for reset delay

Working Principles

The LM3881MMX/NOPB monitors the voltage at the SENSE pin and compares it to the internally set threshold. When the voltage falls below the threshold, the reset output is activated. The manual reset input allows for an external signal to force a reset condition.

Detailed Application Field Plans

The LM3881MMX/NOPB is commonly used in applications where reliable power supply monitoring and reset functionality are essential. It is widely employed in embedded systems, industrial control, automotive electronics, and battery-powered devices.

Detailed and Complete Alternative Models

Some alternative models to the LM3881MMX/NOPB include the MAX809, ADM811, and TPS3808, which offer similar voltage monitoring and reset functions with varying features and specifications.

In conclusion, the LM3881MMX/NOPB is a versatile voltage supervisor and reset IC suitable for a wide range of applications, offering flexibility, low power consumption, and reliable performance.

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