LM3814M-1.0/NOPB

Current Regulation/Management Overview

The LM3814M-1.0/NOPB is a precision current gauge integrated circuit manufactured by Texas Instruments, housed in an 8-pin SOIC package. It functions as a high-side current monitor with a fixed internal gain of 10 V/A, enabling accurate measurement of load currents. The device operates from a single power supply ranging from 2.7 V to 36 V and supports input common-mode voltages up to the positive rail. It features low on-resistance for minimal voltage drop across the shunt resistor and includes a reference output pin for external biasing or level shifting.

Current Regulation/Management Feature Summary

• Fixed internal gain of 10 V/A for simplified system design
• High-side monitoring capability with input common-mode range extending to the positive supply rail
• Low on-resistance minimizes power loss and voltage drop across the sensing element

Current Regulation/Management Applications

• Battery management systems for charge/discharge current monitoring
• Overcurrent protection circuits in industrial equipment
• Power supply current limiting and regulation

Current Regulation/Management Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance when sourcing. Confirm the manufacturer is Texas Instruments, as National Semiconductor was acquired. Ensure the package matches the SOIC-8 footprint required for your PCB layout. Check for obsolescence status as older variants may be discontinued.

Current Regulation/Management Selection Notes

Select this component when a fixed gain of 10 V/A is suitable for the application's signal conditioning requirements. Consider the maximum input common-mode voltage relative to the system supply. Evaluate the operating temperature range against environmental conditions. Compare alternative parts if adjustable gain or lower offset voltage is necessary.

Current Regulation/Management Part Context

This part belongs to the LM381x series of precision current monitors. It shares functional similarities with other devices in the family but differs in specific gain settings and package options. The LM3814 variant specifically provides a fixed gain, distinguishing it from adjustable gain counterparts like the LM3815.

Current Regulation/Management Replacement Considerations

Direct substitutes include LM3814MX-1.0/NOPB. Verify pin compatibility and electrical specifications before replacing.