Startseite Energiemanagement LED-Treiber RGB-LED-Treiber

LM3549

AKTIV

Hochleistungs-LED-Treiber für sequenzielle LEDs

Eine neuere Version dieses Produkts ist verfügbar

Ähnliche Funktionalität wie verglichener Baustein
LP5861T AKTIV 18-Kanal-RGB-LED-Treiber, mit 8-Bit-Analog- und 8-/16-Bit-PWM-Dimmfunktion Newer high-current RGB LED driver with analog and PWM dimming

Produktdetails

Number of channels 3 LED current per channel (mA) 235 LED configuration Parallel Program memory Yes Topology Boost Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.72 Features I2C control Iq (typ) (mA) 1.6 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 3 LED current per channel (mA) 235 LED configuration Parallel Program memory Yes Topology Boost Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.72 Features I2C control Iq (typ) (mA) 1.6 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -30 to 85 Rating Catalog
WQFN (RTW) 24 16 mm² 4 x 4
  • Over-Current Protection
  • Over-Temperature Protection
  • I2C Compatible Interface
  • Under-Voltage Lockout
  • LED Open and Short Protection and Detection
  • 95% Peak Efficiency Buck-Boost Converter
  • NVM Memory for Calibration Data and Standalone Usage without I2C Control
  • Soft Start

Key Specifications

  • Integrated buck-boost Converter
  • Programmable LED Drivers
  • 700 mA Maximum Drive Current
  • ±6% Current Accuracy Over Temperature
  • 24-pin WQFN Package

All trademarks are the property of their respective owners.

  • Over-Current Protection
  • Over-Temperature Protection
  • I2C Compatible Interface
  • Under-Voltage Lockout
  • LED Open and Short Protection and Detection
  • 95% Peak Efficiency Buck-Boost Converter
  • NVM Memory for Calibration Data and Standalone Usage without I2C Control
  • Soft Start

Key Specifications

  • Integrated buck-boost Converter
  • Programmable LED Drivers
  • 700 mA Maximum Drive Current
  • ±6% Current Accuracy Over Temperature
  • 24-pin WQFN Package

All trademarks are the property of their respective owners.

The LM3549 is a high power LED driver with up to 700mA output current. It has three constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency. LED drivers are designed for sequential drive so only one driver can be enabled at a time.

LED driver output current settings can be stored to integrated non-volatile memory which allows stand-alone operation without I2C interface. Non-volatile memory is rewritable so current setting can be changed if needed.

The LM3549 has a fault detection feature that can detect several different fault conditions. In case of a fault error flags are set and FAULT output sends interrupt to control logic. Error flags can be read through I2C interface.

Total brightness can be controlled with PWM input or with master fader register if I2C interface is used.

The LM3549 is a high power LED driver with up to 700mA output current. It has three constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency. LED drivers are designed for sequential drive so only one driver can be enabled at a time.

LED driver output current settings can be stored to integrated non-volatile memory which allows stand-alone operation without I2C interface. Non-volatile memory is rewritable so current setting can be changed if needed.

The LM3549 has a fault detection feature that can detect several different fault conditions. In case of a fault error flags are set and FAULT output sends interrupt to control logic. Error flags can be read through I2C interface.

Total brightness can be controlled with PWM input or with master fader register if I2C interface is used.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM3549 High Power Sequential LED Driver datasheet (Rev. A) 03 Mai 2013
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Application note How to Select a RGB LED Driver 08 Aug 2019
User guide AN-2062 LM3549 Evaluation Kit (Rev. A) 30 Apr 2013

Design und Entwicklung

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Evaluierungsplatine

LM3549SQEVNOPB — LM3549-Evaluierungsmodul

The LM3549 is a high power LED driver with up to 700mA output current. It has three constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency. LED drivers are designed for sequential drive so only one driver can be enabled at a time. LED driver output current (...)

Benutzerhandbuch: PDF
Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTW) 24 Ultra Librarian

Bestellen & Qualität

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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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