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LM3549SQX/NOPB AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM3549SQX/NOPB product

LM3549SQX/NOPB

LED Drivers

RGB LED driverSequential LED driverBuck-boostI2CWQFN-24700 mA

LM3549SQX/NOPB is a 24-pin sequential RGB LED driver with an integrated buck-boost converter and up to 700 mA drive current per active output.

Best for

  • Sequential RGB illumination
  • Portable video projector light engines
  • High-current LED designs requiring buck-boost regulation

Avoid if

  • Simultaneous independent operation of multiple LED channels is required
  • Input voltage is outside 2.7 V to 5.5 V
  • A package other than WQFN-24 is required

Check before use

  • Only one RGB driver is enabled at a time; priority order is red, green, blue.
  • Use the recommended 2.2 µH inductor and low-ESR ceramic input/output capacitors as a starting point.
  • Read and handle FAULT status for LED open, LED short, UVLO, thermal shutdown, and over-current conditions.

Key specifications

Input voltage
2.7 V to 5.5 V
Maximum LED current
700 mA
LED channels
3 sequential RGB outputs
Package
24-pin WQFN

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level-1-260C-UNLIM
ECCN
-
HTSUS
-

Application

Portable video projectorsHigh-power RGB LED driving

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

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Alternative components

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Design and risk insights

Questions & answers

LM3549SQX/NOPB is a Texas Instruments high-power sequential LED driver in a 24-pin WQFN package. It integrates three programmable low-side LED current drivers and a 2.4 MHz buck-boost converter for RGB LED systems.