LM8502TMX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision, Low Power Consumption
• Package: SOT-23-5
• Essence: Monitors and controls voltage levels in electronic systems
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Threshold Voltage Options: 1.575V, 2.32V, 3.08V, 4.38V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)

Pin Configuration

The LM8502TMX/NOPB is a 5-pin device with the following pin configuration:

1. GND (Ground)
2. VDD (Supply Voltage)
3. RESET (Reset Output)
4. TH (Threshold Input)
5. MR (Manual Reset Input)

Functional Features

• Voltage Monitoring: Monitors the supply voltage and provides a reset signal when it falls below a specified threshold.
• Precision: Offers accurate voltage monitoring with different threshold options.
• Low Power Consumption: Consumes minimal power during operation, making it suitable for battery-powered applications.
• Manual Reset Capability: Allows for manual reset of the system by asserting a low signal on the MR pin.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Low power consumption extends battery life. - Small package size enables space-saving designs. - Manual reset capability provides flexibility in system control.

Disadvantages: - Limited threshold voltage options may not cover all application requirements. - Not suitable for high-voltage applications.

Working Principles

The LM8502TMX/NOPB operates by comparing the supply voltage with a user-defined threshold voltage. When the supply voltage falls below the threshold, the RESET pin is asserted low, indicating a reset condition. The device continuously monitors the voltage and keeps the RESET pin low until the supply voltage rises above the threshold.

Detailed Application Field Plans

The LM8502TMX/NOPB finds application in various electronic systems where voltage monitoring and reset functionality are critical. Some potential application fields include:

1. Microcontrollers: Ensures reliable operation by resetting the microcontroller when the supply voltage drops below a safe level.
2. Battery-Powered Devices: Protects against undervoltage conditions, preventing damage to the battery and ensuring proper functioning of the device.
3. Industrial Control Systems: Monitors power supply voltages in control systems, triggering a reset if voltage levels become unstable.
4. Automotive Electronics: Provides voltage supervision in automotive applications, enabling safe and reliable operation of electronic components.

Detailed and Complete Alternative Models

• LM809: Similar voltage supervisor IC with adjustable threshold options.
• MAX823: Voltage monitor with manual reset and adjustable threshold voltage.
• TL7705: Precision voltage supervisor with fixed threshold voltage options.

(Note: This list is not exhaustive and other alternative models may exist.)

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