LM334SM

Current Regulation/Management Overview

The LM334SM is a three-terminal adjustable current source manufactured by Texas Instruments, designed for surface-mount applications in an 8-SOIC package. It operates within a wide dynamic voltage range of 1V to 40V and supports a programmable output current from 1µA to 10mA. The device features an initial accuracy of ±6% and maintains excellent current regulation at 0.02%/V. It functions as a true floating current source requiring only one external resistor for setting the current value.

Current Regulation/Management Feature Summary

• Operates as a true floating current source without requiring a separate power connection
• Provides high-precision current regulation with minimal external component requirements
• Supports bidirectional operation acting as both rectifier and current source in AC applications

Current Regulation/Management Applications

• Bias networks for electronic circuits
• LED driving systems
• Temperature sensing applications
• Ramp generation circuits

Current Regulation/Management Procurement Notes

Verify the specific suffix designation when ordering. The standard LM334SM may lack RoHS compliance compared to the LM334SM/NOPB variant. Confirm package type and temperature rating against project requirements. Ensure compatibility with existing PCB footprints for the 8-SOIC configuration before procurement.

Current Regulation/Management Selection Notes

Select this component for designs requiring precise current sinking or sourcing across a wide voltage span. Consider the ±6% initial accuracy tolerance for precision applications. Evaluate thermal performance within the SOIC-8 package constraints. Verify that the operating temperature range meets environmental specifications.

Current Regulation/Management Part Context

This part belongs to the LM134/LM234/LM334 family of three-terminal adjustable current sources. The LM334 series specifically targets commercial temperature ranges. It shares functional similarities with other industry-standard current references but offers distinct packaging options for surface-mount integration.

Current Regulation/Management Replacement Considerations

LM334SM/NOPB serves as a direct replacement offering RoHS compliance while maintaining identical electrical characteristics and pinout configuration.