STM811LW16F

Product Overview

Category

The STM811LW16F belongs to the category of electronic components.

Use

It is primarily used for voltage monitoring and reset functions in various electronic devices.

Characteristics

• Low power consumption
• Wide operating voltage range
• High accuracy
• Small package size

Package

The STM811LW16F is available in a small SOT-23-5 package.

Essence

The essence of the STM811LW16F lies in its ability to monitor voltage levels and provide a reset signal when necessary, ensuring proper functioning of electronic systems.

Packaging/Quantity

The STM811LW16F is typically packaged in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM811LW16F has five pins arranged as follows:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| VOUT | |_______| ```

• VDD: Power supply pin
• GND: Ground pin
• MR: Manual reset input pin
• RESET: Reset output pin
• VOUT: Voltage monitor output pin

Functional Features

1. Voltage Monitoring: The STM811LW16F continuously monitors the voltage level and compares it with the preset threshold voltage.
2. Reset Generation: When the voltage drops below the threshold, the STM811LW16F generates a reset signal to ensure proper system operation.
3. Manual Reset: The MR pin allows for manual reset, overriding the automatic reset function.
4. Adjustable Timeout Period: The reset timeout period can be configured to suit specific application requirements.

Advantages and Disadvantages

Advantages

• Low power consumption ensures minimal impact on overall system performance.
• Wide operating voltage range makes it compatible with various electronic devices.
• Small package size enables space-saving integration into compact designs.
• High accuracy ensures reliable voltage monitoring and reset functionality.

Disadvantages

• Limited number of available threshold voltage and timeout period options.
• Requires external components for proper functioning.

Working Principles

The STM811LW16F operates by continuously monitoring the voltage level at the VOUT pin. When the voltage drops below the preset threshold, the internal circuitry triggers a reset signal on the RESET pin. This reset signal remains active until the voltage rises above the threshold or a timeout period elapses. The MR pin allows for manual reset, overriding the automatic reset function.

Detailed Application Field Plans

The STM811LW16F finds applications in various electronic systems that require voltage monitoring and reset functions. Some potential application fields include:

1. Microcontrollers: Ensuring proper system initialization and recovery after power supply fluctuations.
2. Industrial Control Systems: Providing reliable reset functionality to prevent system malfunctions.
3. Automotive Electronics: Monitoring critical voltage levels to maintain safe and stable operation.
4. Consumer Electronics: Protecting sensitive components from voltage fluctuations and ensuring uninterrupted operation.

Detailed and Complete Alternative Models

1. STM810LW16F: Similar to STM811LW16F but without the manual reset feature.
2. MAX811LW16F: A comparable voltage monitor and reset IC from Maxim Integrated.
3. TPS3808G01DBVR: Texas Instruments' alternative with adjustable threshold voltage and timeout period options.

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