LM3466TA/NOPB

Overview

The LM3466TA/NOPB is a multi-string LED current balancer designed for use with constant-current power supplies. It operates within a supply voltage range of 6 V to 70 V and features a TO-220-7 package. The device provides a switch output capable of handling up to 1.5 A, enabling precise current balancing across multiple LED strings without requiring a microcontroller.

Feature Summary

• Provides multi-string LED current balancing functionality
• Compatible with constant-current power supplies
• Configurable regulator operation via external resistors

Applications

• Multi-string LED lighting systems
• LED drivers using constant-current sources
• Industrial LED illumination setups

Procurement Notes

Verify the specific suffix TA/NOPB against the manufacturer's latest documentation to confirm pinout and thermal characteristics. Ensure the application design accommodates the TO-220-7 package constraints and the specified 6 V to 70 V input range. Cross-reference the 1.5 A switch rating with actual load requirements to prevent overstress conditions during operation.

Selection Notes

Select this component when balancing currents across parallel LED strings driven by a constant-current source is required. It is suitable for designs needing configurable regulation between 20 mA and 150 mA without complex control logic. Consider the TO-220-7 package for adequate thermal dissipation in high-power applications compared to smaller surface-mount alternatives.

Part Context

This part belongs to Texas Instruments' LED lighting driver family, specifically focused on current balancing solutions. It complements other LM346x series devices by addressing multi-string uniformity issues. The NOPB suffix indicates lead-free construction compliant with RoHS standards, ensuring environmental safety for modern electronic assemblies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.