LM1851MX/NOPB

Power Management - Specialized Overview

The LM1851MX/NOPB is a Ground Fault Interrupter manufactured by Texas Instruments, designed for detecting ground faults in electrical systems. It operates within a supply voltage range of 4.5 V to 36 V and features a quiescent current of 2 mA. The device includes an internal reference voltage of 5.1 V and offers adjustable trip thresholds via external resistors. It provides a latching output with a reset function and supports both AC and DC fault detection. The component is housed in a 10-SOIC package and is rated for operation from -40°C to +85°C.

Power Management - Specialized Feature Summary

• Integrated ground fault detection circuitry for AC and DC applications
• Adjustable trip threshold using external resistor network
• Latching output mechanism with manual or automatic reset capability
• Internal 5.1 V reference voltage for stable operation

Power Management - Specialized Applications

• Ground fault protection in residential and commercial electrical panels
• Leakage current monitoring in industrial power distribution systems
• Safety interlock circuits in motor control units
• Battery management systems requiring ground fault isolation

Power Management - Specialized Procurement Notes

Verify the specific suffix 'MX' indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through official Texas Instruments documentation prior to procurement. Ensure the supplier provides traceability data consistent with the manufacturer's quality standards. Cross-reference the part number against the latest datasheet revision to confirm pinout compatibility with existing designs.

Power Management - Specialized Selection Notes

Select this component when precise ground fault detection is required for both AC and DC leakage currents. Consider the adjustable trip threshold feature for custom sensitivity settings. Evaluate the latching output functionality if system safety requires persistent fault indication until reset. Compare the operating temperature range against environmental conditions to ensure reliability under extreme thermal stress.

Power Management - Specialized Part Context

The LM1851 series belongs to Texas Instruments' portfolio of specialized power management and protection ICs. It complements other ground fault interrupters like the LM1851M variant, differing primarily in packaging format. This component addresses safety requirements in modern electrical infrastructure, providing reliable fault detection where standard circuit breakers may not suffice.

Power Management - Specialized Replacement Considerations

LM1851M/NOPB is a direct substitute offering identical functionality in a tube package instead of tape-and-reel.