LM334SMX

Current Regulation/Management Overview

The LM334SMX is a three-terminal adjustable current source manufactured by Texas Instruments, belonging to the LM134/234/334 family. It operates within an input voltage range of 800 mV to 40 V and maintains a typical quiescent current of 10 mA. The device offers accuracy specifications of 3% for the NOPB variant and ±6% for standard versions. It supports high or low-side sensing configurations and functions reliably across operating temperatures ranging from -40°C to +85°C. The component is housed in an 8-SOIC surface-mount package.

Current Regulation/Management Feature Summary

• Provides a stable, adjustable output current suitable for precision applications
• Supports both high-side and low-side current sensing configurations
• Operates effectively over a wide input voltage range starting from 800 mV

Current Regulation/Management Applications

• Wide-range current-to-frequency converters
• Precision current sources and sinks using voltage references
• Frequency-to-voltage converter circuits

Current Regulation/Management Procurement Notes

Verify the specific suffix (e.g., /NOPB) against the datasheet to confirm RoHS compliance and exact accuracy class. Confirm the package type matches the design requirements, as variations exist between SOIC-8 and other form factors within the same series. Ensure the selected variant meets the required operating temperature range for the target application environment.

Current Regulation/Management Selection Notes

Select this component when a compact, adjustable current source is required for power management or signal conditioning circuits. Consider the 8-SOIC package for surface-mount assembly constraints. Evaluate the accuracy tolerance (3% vs 6%) based on circuit sensitivity requirements. Verify that the 10 mA quiescent current aligns with system power budget limitations.

Current Regulation/Management Part Context

This part belongs to the LM134/234/334 family of three-terminal adjustable current sources. These devices are widely used in analog signal processing and power management systems where precise current regulation is necessary. The LM334 specifically denotes the commercial grade version of this family, offering balanced performance for general-purpose electronic designs.

Current Regulation/Management Replacement Considerations

LM334SM/NOPB serves as a direct substitute with identical functionality and RoHS compliance. LM334S8#PBF from Analog Devices Inc. is listed as a similar alternative. Verify pinout compatibility and thermal characteristics before substituting.