LM334Z/NOPB

Current Regulation/Management Overview

The LM334Z/NOPB is a three-terminal adjustable current source manufactured by Texas Instruments in a TO-92-3 through-hole package. It operates with an input voltage range of 1V to 40V and supports a programmable output current from 1µA to 10mA. The device features an initial accuracy of ±3% and offers a dynamic voltage range with 0.02%/V current regulation. It dissipates up to 400mW and functions within a temperature range of 0°C to 70°C. The component acts as a true floating current source, requiring only a single external resistor for operation.

Current Regulation/Management Feature Summary

• Provides a truly floating current source configuration without the need for separate power connections.
• Enables wide-range current programming using a single external resistor across a 10,000:1 ratio.
• Supports reverse application voltages up to 20V with minimal current consumption.

Current Regulation/Management Applications

• LED drivers
• Temperature sensing circuits
• Surge protection networks

Current Regulation/Management Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS status against the latest manufacturer datasheet. Confirm the TO-92-3 package dimensions match the mechanical outline drawing for PCB footprint compatibility. Ensure the operating temperature range of 0°C to 70°C meets the environmental requirements of the target application before finalizing procurement.

Current Regulation/Management Selection Notes

Select this component when a simple, low-cost adjustable current source is required for through-hole designs. It is suitable for applications needing high dynamic voltage ranges and precise current regulation without complex biasing networks. Consider the 400mW power dissipation limit and the 10mA maximum output current when designing thermal management strategies for the circuit.

Current Regulation/Management Part Context

The LM334 series belongs to Texas Instruments' portfolio of current references and regulators. The LM334Z/NOPB specifically denotes the TO-92-3 package variant within the broader LM334 family, which also includes surface-mount options like the LM334SMX/NOPB. This part serves as a fundamental building block for analog signal conditioning and power management tasks requiring stable current generation.

Current Regulation/Management Replacement Considerations

• LM334M/NOPB (SOIC-8 package)
• LM334SMX/NOPB (SOIC-8 package)