LM334SMX/NOPB

Current Regulation/Management Overview

The LM334SMX/NOPB is a three-terminal adjustable current source manufactured by Texas Instruments, belonging to the LM334 series. It operates within an input voltage range of 800 mV to 40 V and maintains a typical operating supply current of 10 mA. The device offers accuracy specifications of 3% for the NOPB variant and 6% for the standard LM334SM version. It supports surface mount installation in an 8-SOIC package. Operating temperature ranges vary by suffix, covering -40°C to +85°C or 0°C to 70°C.

Current Regulation/Management Feature Summary

• Provides a stable, adjustable constant current output suitable for precision applications
• Supports both high-side and low-side sensing configurations for flexible circuit integration
• Operates effectively across a wide input voltage range starting from low millivolt levels

Current Regulation/Management Applications

• Wide-range current-to-frequency conversion circuits
• Precision current sources and sinks utilizing voltage references
• Battery charging control systems requiring regulated current profiles

Current Regulation/Management Procurement Notes

Verify the specific suffix (NOPB vs non-NOPB) to confirm RoHS compliance and accuracy grade, as datasheets indicate 3% accuracy for NOPB variants. Confirm the required operating temperature range matches the specific sub-model's specification sheet. Ensure the 8-SOIC package dimensions align with PCB layout constraints before finalizing procurement orders.

Current Regulation/Management Selection Notes

Select this component when a compact, adjustable current source is needed for power management IC designs. The 8-SOIC package allows for surface-mount integration. Choose the NOPB suffix if lead-free manufacturing and higher accuracy are required. Consider the minimum operating voltage of 800 mV when designing low-voltage supply rails.

Current Regulation/Management Part Context

This part belongs to the LM334 family of three-terminal adjustable current sources. It serves as a semiconductor alternative to discrete transistor current mirrors, offering improved stability and temperature compensation. The device integrates reference elements to maintain constant current despite variations in load or supply voltage.

Current Regulation/Management Replacement Considerations

LM334SM is a direct functional substitute but may differ in RoHS status and accuracy tolerance. LM334S8#PBF and LM334S8#TRPBF from Analog Devices Inc. are listed as similar alternatives with comparable pinouts and electrical characteristics.