The LM3420AM5-16.8 is a micropower undervoltage sensing circuit manufactured by National Semiconductor (now Texas Instruments). It is designed to monitor a voltage and provide an active low reset signal when the voltage falls below a specified threshold. The LM3420AM5-16.8 is specifically designed for monitoring 16.8V supplies. It's useful for protecting battery-powered devices or ensuring proper operation in systems with voltage fluctuations.
Applications:
- Undervoltage detection
- Battery monitoring
- Power supply monitoring
- Microcontroller reset circuits
- System power management
Features:
- Precision undervoltage detection
- Micropower operation
- Active low reset output
- Hysteresis
- Small SOT-23 package
Benefits:
- Protects against damage or malfunction due to low voltage conditions.
- Extends battery life in portable applications due to low power consumption.
- Provides a reliable reset signal to microcontrollers and other digital circuits.
- Prevents oscillations and false triggering with built-in hysteresis.
- Saves board space with a small SOT-23 package.
Additional Details:
The LM3420AM5-16.8 undervoltage sensing circuit provides a reliable and accurate way to monitor voltage levels in electronic systems. Its micropower operation makes it suitable for battery-powered applications where power consumption is a critical concern. The active low reset output can be directly connected to the reset input of a microcontroller or other digital circuit, ensuring a proper reset sequence when the voltage falls below the threshold. The built-in hysteresis prevents oscillations and false triggering caused by noise or voltage fluctuations. National Semiconductor, now part of Texas Instruments, is a reputable manufacturer of high-performance analog and mixed-signal integrated circuits. Specifically, this part number is meant to trigger a reset when the voltage falls to 16.8V, making it useful for monitoring multi-cell battery packs.