Overview
The LM8365BALMFX45/NOPB is a micropower undervoltage-sensing circuit produced by Texas Instruments. This device is designed for use in battery-powered microprocessor-based systems where extended battery life is crucial. It features a highly accurate voltage reference, a comparator with precise thresholds, and built-in hysteresis to prevent erratic reset operations. The LM8365 is particularly useful in applications requiring low power consumption and precise voltage monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | -0.3 | 6.5 | V | |
| RESET Output Voltage | -0.3 | 6.5 | V | |
| RESET Output Current | 70 | mA | ||
| Mounting Temperature (Lead Temp., 10 sec) | 260 | °C | ||
| Junction Temperature | 125 | °C | ||
| Storage Temperature, Tstg | -65 | 150 | °C | |
| Quiescent Current at VIN = 2.6 V | 0.62 | μA | ||
| Threshold Voltage Accuracy | ±2.5% | % | ||
| Input Voltage Range | 1 | 6 | V | |
| Output Delay (Typical with 0.1 μF Capacitor) | 130 ms | ms |
Key Features
- Extremely-low quiescent current: 0.62 μA at VIN = 2.6 V
- High accuracy threshold voltage (±2.5%)
- Open-drain output
- Programmable output delay by external capacitor
- Input voltage range: 1 V to 6 V
- Pin-for-pin compatible with MC33465
- Built-in hysteresis to prevent erratic reset operation
Applications
- Portable electronics
- Low-battery detection
- Microprocessor reset controllers
- Power fail indicators
- Battery backup detection
- Missing pulse detection
Q & A
- What is the primary function of the LM8365?
The LM8365 is a micropower undervoltage-sensing circuit designed to monitor input voltages and provide a reset signal when the voltage drops below a specified threshold.
- What is the quiescent current of the LM8365 at VIN = 2.6 V?
The quiescent current is 0.62 μA at VIN = 2.6 V.
- What is the accuracy of the threshold voltage for the LM8365?
The threshold voltage accuracy is ±2.5%.
- How can the output delay be programmed for the LM8365?
The output delay can be programmed using an external capacitor connected to the CD pin.
- What is the input voltage range for the LM8365?
The input voltage range is from 1 V to 6 V.
- Is the LM8365 pin-for-pin compatible with any other device?
Yes, it is pin-for-pin compatible with the MC33465.
- What type of output does the LM8365 have?
The LM8365 has an open-drain output.
- What is the typical output delay with a 0.1 μF capacitor?
The typical output delay with a 0.1 μF capacitor is 130 ms.
- What are some common applications of the LM8365?
Common applications include portable electronics, low-battery detection, microprocessor reset controllers, power fail indicators, and battery backup detection.
- How does the LM8365 prevent erratic reset operations?
The LM8365 has built-in hysteresis to prevent erratic reset operations when the input voltage crosses the threshold.
