LM8365BALMF27/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage and generates a reset signal when the voltage falls below a predetermined threshold - Ensures proper operation of microcontrollers, microprocessors, and other digital systems - Provides reliable power-on reset (POR) to prevent erratic behavior during power-up or brownout conditions

Package: SOT-23-5

Essence: The LM8365BALMF27/NOPB is a voltage supervisor IC that ensures stable and reliable operation of electronic devices by monitoring the power supply voltage.

Packaging/Quantity: The LM8365BALMF27/NOPB is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Reset Threshold Voltage: 2.7V
• Reset Timeout Period: 200ms
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM8365BALMF27/NOPB has five pins arranged as follows:

```

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| | --| VDD|-- Pin 1: Supply Voltage Input --| GND|-- Pin 2: Ground --| MR |-- Pin 3: Manual Reset Input --| RST|-- Pin 4: Reset Output --| NC |-- Pin 5: No Connection |____| ```

Functional Features

1. Voltage Monitoring: The LM8365BALMF27/NOPB continuously monitors the supply voltage and compares it with the preset threshold voltage.
2. Reset Generation: When the supply voltage falls below the threshold voltage, the LM8365BALMF27/NOPB generates a reset signal on the RST pin.
3. Manual Reset: The MR pin allows for manual reset by pulling it low.
4. Reset Timeout: The reset signal remains active for a fixed timeout period (200ms) after the supply voltage rises above the threshold voltage.
5. Low Quiescent Current: The IC consumes very low quiescent current (10µA typical), making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Ensures reliable power-on reset, preventing erratic behavior during power-up or brownout conditions - Low quiescent current consumption extends battery life in portable devices - Small package size enables space-efficient designs

Disadvantages: - Fixed reset timeout period may not be suitable for all applications requiring longer or shorter timeouts - Limited number of pins restricts additional functionality integration without external circuitry

Working Principles

The LM8365BALMF27/NOPB 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 internal circuitry triggers the reset output, ensuring a controlled reset of the connected digital system. The reset signal remains active for a fixed timeout period to allow the system to stabilize before resuming normal operation.

Application Field Plans

The LM8365BALMF27/NOPB finds applications in various fields where stable and reliable operation of digital systems is crucial. Some potential application areas include:

1. Microcontrollers and Microprocessors: Provides power-on reset functionality to ensure proper initialization of these devices.
2. Embedded Systems: Monitors the power supply voltage in embedded systems to prevent data corruption or loss during power fluctuations.
3. Industrial Control Systems: Ensures reliable operation of control systems by resetting them in case of power supply issues.
4. Automotive Electronics: Protects automotive electronic systems from voltage fluctuations, preventing malfunctions or damage.

Alternative Models

1. LM8365BALMF33/NOPB: Similar to LM8365BALMF27/NOPB but with a higher reset threshold voltage of 3.3V.
2. LM8365BALMF30/NOPB: Similar to LM8365BALMF27/NOPB but with a higher reset threshold voltage of 3.0V.
3. LM8365BALMF25/NOPB: Similar to LM8365BALMF27/NOPB but with a lower reset threshold voltage of 2.5V.

These alternative models provide flexibility in choosing the appropriate reset threshold voltage for specific applications.

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