LM3492MHX/NOPB

Overview

The LM3492MHX/NOPB is a two-channel LED driver IC from Texas Instruments utilizing boost topology. It supports an input voltage range of 4.5 V to 65 V and delivers adjustable output currents between 50 mA and 200 mA per channel. The device operates at switch frequencies ranging from 200 kHz to 1 MHz with adjustable settings. It features PWM dimming control, soft start functionality, and thermal shutdown protection. Packaged in an HTSSOP-20 format, it functions within a temperature range of -40°C to +125°C.

Feature Summary

• Dual independent channels for individual LED current regulation
• Integrated PWM dimming capability for precise brightness control
• Built-in thermal shutdown and soft start mechanisms for system protection

Applications

• LED lighting systems requiring dual-channel drive
• General illumination applications using boost converter topologies
• Industrial or commercial LED fixtures with wide input voltage ranges

Procurement Notes

Verify the specific suffix 'MHX' indicates tape-and-reel packaging when sourcing components. Confirm that the 'NOPB' designation ensures compliance with RoHS standards and absence of lead. Cross-reference the manufacturer part number against official distributor catalogs to ensure authenticity and correct revision level before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring two independently controlled LED outputs from a single boost regulator. Ensure the application input voltage falls within the 4.5 V to 65 V window. Verify that the required LED string voltage does not exceed the maximum operating limits. Consider the HTSSOP-20 package size constraints during PCB layout planning.

Part Context

This device belongs to the LM3492 series of LED drivers designed for high-efficiency lighting solutions. It integrates power switches and control logic into a compact form factor. The series targets applications needing reliable, dimmable LED driving without external complex circuitry, simplifying design implementation for manufacturers.

Replacement Considerations

LM3492HCMH/NOPB offers similar functionality but supports higher output currents up to 250 mA.