LM3420M5-12.6/NOPB

Battery Chargers Overview

The LM3420M5-12.6/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, originally under the National Semiconductor brand. It provides a fixed output voltage of 12.6V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2V to 12V and draws a supply current of 275µA. It features low noise characteristics, specified at 20µVp-p from 0.1Hz to 10Hz and 36µVp-p from 10Hz to 10kHz. The temperature coefficient is 50ppm/°C, ensuring stability across the operating temperature range of -40°C to +85°C. It is housed in a compact SOT-23-5 surface-mount package.

Battery Chargers Feature Summary

• Provides a stable, fixed 12.6V reference voltage with high initial accuracy.
• Features low noise performance suitable for sensitive analog circuits.
• Operates efficiently with low supply current consumption.
• Maintains voltage stability over a wide industrial temperature range.

Battery Chargers Applications

• Precision analog-to-digital converter (ADC) reference sources
• High-accuracy data acquisition systems
• Calibration equipment requiring stable voltage references
• Battery-powered instrumentation

Battery Chargers Procurement Notes

Verify the manufacturer designation as Texas Instruments, noting the legacy National Semiconductor branding. Confirm the specific suffix /NOPB indicates lead-free and RoHS compliance. Ensure the package type matches the required SOT-23-5 footprint for PCB layout compatibility. Check for obsolescence notices or lifecycle status updates prior to final procurement decisions.

Battery Chargers Selection Notes

Select this component when a precise 12.6V reference is required in a small form factor. Consider the 275µA supply current against system power budgets. Evaluate the 50ppm/°C temperature coefficient against environmental thermal variations. Compare noise specifications with other series references if ultra-low noise is critical for the application.

Battery Chargers Part Context

This part belongs to the LM4120 family of micropower shunt voltage references. The family is characterized by its ability to provide accurate reference voltages in miniature packages. The LM3420 variant specifically targets applications needing higher voltage outputs while maintaining low power consumption. It serves as a drop-in replacement for older discrete zener diode solutions in precision circuits.

Battery Chargers Replacement Considerations

• LM4120AIM5-12.6/NOPB

Battery Chargers FAQ

What is the maximum output current capability of the LM3420M5-12.6/NOPB?

The datasheet specifies a maximum output current of 5 mA for this device.

Does the /NOPB suffix affect the electrical performance compared to standard versions?

The /NOPB suffix indicates that the device is lead-free and compliant with RoHS directives, without altering the electrical specifications.