Texas Instruments

LM319N/NOPB  

Linear Comparators

The LM319N/NOPB is a high-performance, low power, voltage supervisory circuit manufactured by Texas Instruments. It is designed to monitor the supply voltage in a system and provide an output signal when the voltage falls below a specified threshold. This makes it useful for applications where it is critical to maintain a stable voltage, such as in battery-powered devices or systems with sensitive components.

Description:

The LM319N/NOPB is a monolithic integrated circuit that provides a reliable and accurate voltage monitoring function. It is available in a small, 8-pin plastic dual in-line package (DIP) or a surface-mount package.

Features:

1. Low power consumption: The LM319N/NOPB operates on a supply voltage range of 2.5V to 36V and has a very low power consumption of just 2μA.
2. Adjustable threshold voltage: The threshold voltage can be easily adjusted using an external resistor network, allowing for a wide range of monitoring voltages.
3. Active-low output: The output is active-low, meaning that it goes low when the supply voltage falls below the threshold.
4. Open-drain output: The output is open-drain, which allows it to interface with a wide range of external circuits.
5. Short-circuit protection: The LM319N/NOPB has built-in protection against short-circuit conditions on the output pin.
6. Wide operating temperature range: It operates over a wide temperature range of -40°C to +125°C.

Applications:

1. Battery-powered devices: The LM319N/NOPB can be used to monitor the voltage of a battery and provide an indication when the battery voltage falls below a certain level.
2. Power supply supervision: It can be used to monitor the output voltage of a power supply and provide an indication if the voltage falls outside of the acceptable range.
3. Brownout protection: The LM319N/NOPB can be used to detect brownouts (a temporary drop in voltage) and take appropriate action, such as shutting down a system to prevent damage.
4. Watchdog timer: It can be used as a watchdog timer by monitoring the voltage of a system and providing an output signal if the voltage falls below a certain level, indicating a potential problem.
5. Voltage monitoring in industrial systems: The LM319N/NOPB can be used to monitor the voltage in industrial systems, such as motor drives or power distribution systems, to ensure that the voltage remains within acceptable limits.

In summary, the LM319N/NOPB is a versatile and reliable voltage supervisory circuit that can be used in a wide range of applications where accurate voltage monitoring is critical. Its low power consumption, adjustable threshold voltage, and open-drain output make it a popular choice for designers looking for a high-performance solution.

LM319N/NOPB Documents

Download datasheets and manufacturer documentation for LM319N/NOPB

Images :

Mechanical Outline Drawing      

PCN :

Qualification of CK5000A Mold Compound in AP1 for PDIP packages (PDF)       Product Change Notification (PDF)      

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