Overview
The LM809M3-3.08/NOPB is a precision voltage monitor and reset IC produced by Texas Instruments. This component is designed to monitor the power supply voltage in microcontrollers, microprocessors, and other digital systems. It ensures reliable system operation by providing a reset signal when the supply voltage falls below a predefined threshold. The LM809M3-3.08/NOPB is specifically configured for a 3.08V threshold, making it ideal for applications requiring precise voltage monitoring. Its compact SOT-23 package and low power consumption make it suitable for portable and space-constrained designs. This product is targeted at engineers and designers working on embedded systems, industrial automation, and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Threshold Voltage | 3.08 | V | ±1.5% accuracy |
| Supply Voltage Range | 1.1 to 5.5 | V | |
| Quiescent Current | 4.5 | µA | Typical |
| Reset Timeout Period | 140 | ms | Minimum |
| Operating Temperature Range | -40 to +85 | °C | |
| Package | SOT-23 | 3-pin | |
| Output Type | Active-Low | Open-Drain | |
| Reset Assertion Threshold | 3.08 | V | |
| Hysteresis | 50 | mV | Typical |
| Accuracy | ±1.5 | % | Over temperature |
Key Features
- Precision 3.08V threshold voltage with ±1.5% accuracy.
- Low quiescent current of 4.5 µA, ideal for battery-powered applications.
- Active-low, open-drain reset output for flexible system integration.
- Wide supply voltage range from 1.1V to 5.5V.
- Built-in hysteresis for noise immunity and stable operation.
- Compact SOT-23 package for space-constrained designs.
- Robust performance across an industrial temperature range (-40°C to +85°C).
Applications
The LM809M3-3.08/NOPB is widely used in applications requiring precise voltage monitoring and system reset functionality. Its primary applications include:
- Embedded Systems: Ensures reliable operation of microcontrollers and microprocessors by monitoring the power supply.
- Industrial Automation: Provides robust voltage monitoring in harsh industrial environments.
- Consumer Electronics: Ideal for portable devices, ensuring safe operation during voltage fluctuations.
- Automotive Electronics: Monitors vehicle power systems to prevent malfunctions.
- IoT Devices: Supports low-power, compact designs in IoT applications.
Q & A
1. What is the threshold voltage of the LM809M3-3.08/NOPB?
The threshold voltage is 3.08V with ±1.5% accuracy.
2. What is the supply voltage range for this IC?
The supply voltage range is 1.1V to 5.5V.
3. How much current does the LM809M3-3.08/NOPB consume?
The quiescent current is typically 4.5 µA.
4. What is the reset timeout period?
The minimum reset timeout period is 140 ms.
5. What is the operating temperature range?
The operating temperature range is -40°C to +85°C.
6. What type of output does the LM809M3-3.08/NOPB provide?
It provides an active-low, open-drain reset output.
7. Is the LM809M3-3.08/NOPB suitable for battery-powered applications?
Yes, its low quiescent current makes it ideal for battery-powered applications.
8. What package does this IC come in?
It comes in a compact 3-pin SOT-23 package.
9. Does the LM809M3-3.08/NOPB have built-in hysteresis?
Yes, it has a typical hysteresis of 50 mV for noise immunity.
10. What are the typical applications of this IC?
Typical applications include embedded systems, industrial automation, consumer electronics, automotive electronics, and IoT devices.
