Startseite Energiemanagement LED-Treiber LED-Beleuchtungstreiber
Startseite
Energiemanagement
LED-Treiber
LED-Beleuchtungstreiber

LM3554

AKTIV

Synchroner Aufwärtswandler mit 1,2A Dual-High-Side-LED-Treiber und I2C-kompatibler Schnittstelle

Jetzt bestellen
Datenblatt

LM3554

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Input voltage type DC/DC Topology Boost, current mode Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.5 Iout (max) (A) 1.2 Iq (typ) (mA) 0.63 Features I2C control Operating temperature range (°C) -30 to 85 Dimming method Analog, PWM Number of channels 2 Rating Catalog
Input voltage type DC/DC Topology Boost, current mode Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.5 Iout (max) (A) 1.2 Iq (typ) (mA) 0.63 Features I2C control Operating temperature range (°C) -30 to 85 Dimming method Analog, PWM Number of channels 2 Rating Catalog
DSBGA (YFQ) 16 3.24 mm² 1.8 x 1.8
  • Input Voltage: 2.5 V to 5.5 V
  • Programmable 4.5-V or 5-V Constant Output Voltage
  • Dual High-Side Current Sources
  • Grounded Cathode Allowing for Better Heat Sinking and LED Routing
  • > 90% Efficiency
  • Ultra-Small Solution Size: < 23 mm2
  • Four Operating Modes: Torch, Flash, LED Indicator, and Voltage Output
  • Accurate and Programmable LED Current from 37.5 mA to 1.2 A
  • Hardware Flash and Torch Enable
  • LED Thermal Sensing and Current Scaleback
  • Software Selectable Input Voltage Monitor
  • Programmable Flash Timeout
  • Dual Synchronization Inputs for RF Power-Amplifier Pulse Events
  • Open and Short LED Detection
  • Active High Hardware Enable for Protection Against System Faults
  • 400-kHz I2C-Compatible Interface
  • Input Voltage: 2.5 V to 5.5 V
  • Programmable 4.5-V or 5-V Constant Output Voltage
  • Dual High-Side Current Sources
  • Grounded Cathode Allowing for Better Heat Sinking and LED Routing
  • > 90% Efficiency
  • Ultra-Small Solution Size: < 23 mm2
  • Four Operating Modes: Torch, Flash, LED Indicator, and Voltage Output
  • Accurate and Programmable LED Current from 37.5 mA to 1.2 A
  • Hardware Flash and Torch Enable
  • LED Thermal Sensing and Current Scaleback
  • Software Selectable Input Voltage Monitor
  • Programmable Flash Timeout
  • Dual Synchronization Inputs for RF Power-Amplifier Pulse Events
  • Open and Short LED Detection
  • Active High Hardware Enable for Protection Against System Faults
  • 400-kHz I2C-Compatible Interface

The LM3554 is a 2-MHz fixed-frequency, current-mode synchronous boost converter. The device is designed to operate as a dual 600-mA (1.2 A total) constant-current driver for high-current white LEDs, or as a regulated 4.5-V or 5-V voltage source.

The main features include: an I2C-compatible interface for controlling the LED current or the desired output voltage, a hardware flash enable input for direct triggering of the flash pulse, and dual TX inputs which force the flash pulse into a low-current torch mode allowing for synchronization to RF power amplifier events or other high-current conditions. Additionally, an active high hardware enable (HWEN) input provides a hardware shutdown during system software failures.

Five protection features are available within the LM3554 including a software selectable input voltage monitor, an internal comparator for interfacing with an external temperature sensor, four selectable current limits to ensure the battery current is kept below a predetermined peak level, an overvoltage protection feature to limit the output voltage during LED open circuits, and an output short circuit protection which limits the output current during shorts to GND.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3554 is a 2-MHz fixed-frequency, current-mode synchronous boost converter. The device is designed to operate as a dual 600-mA (1.2 A total) constant-current driver for high-current white LEDs, or as a regulated 4.5-V or 5-V voltage source.

The main features include: an I2C-compatible interface for controlling the LED current or the desired output voltage, a hardware flash enable input for direct triggering of the flash pulse, and dual TX inputs which force the flash pulse into a low-current torch mode allowing for synchronization to RF power amplifier events or other high-current conditions. Additionally, an active high hardware enable (HWEN) input provides a hardware shutdown during system software failures.

Five protection features are available within the LM3554 including a software selectable input voltage monitor, an internal comparator for interfacing with an external temperature sensor, four selectable current limits to ensure the battery current is kept below a predetermined peak level, an overvoltage protection feature to limit the output voltage during LED open circuits, and an output short circuit protection which limits the output current during shorts to GND.

For all available packages, see the orderable addendum at the end of the data sheet.
filter Andere LED-Beleuchtungstreiber suchen
Herunterladen Video mit Transkript ansehen Video

Technische Dokumentation

star =Von TI ausgewählte Top-Empfehlungen für dieses Produkt
Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.
Alle anzeigen 4
Typ Titel Datum
* Data sheet LM3554 Synchronous Boost Converter With 1.2-A Dual High-Side LED Drivers and I2C-Compatible Interface datasheet (Rev. C) PDF | HTML 26 Feb 2016
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide AN-1742 LM3554 Evaluation Board (Rev. B) 23 Jul 2013

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM3554TMEEV — Evaluierungsplatine für den LM3554

Synchronous Boost Converter with 1.2A Dual High Side LED Drivers and I2C-Compatible Interface

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Treiber oder Bibliothek

LM355XSW-LINUX — Linux-Treiber für LM355X

The Linux driver supports the LM355X series of LED Drivers. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • lm3554
  • lm3556

 

Linux Source Files

(...)

View Options
GUI für Evaluierungsmodul (EVM)

SNVC046 — LM3554 Graphical User Interface

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
LED-Beleuchtungstreiber
LM3554 — Synchroner Aufwärtswandler mit 1,2A Dual-High-Side-LED-Treiber und I2C-kompatibler Schnittstelle
Hardware-Entwicklung
Evaluierungsplatine
LM3554TMEEV — Evaluierungsplatine für den LM3554
Herunterladen
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 (...)
Anfordern
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
DSBGA (YFQ) 16 Ultra Librarian
Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

Bestellen & Qualität

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

Empfohlene Produkte können Parameter, Evaluierungsmodule oder Referenzdesigns zu diesem TI-Produkt beinhalten.

Support und Schulungen

TI E2E™-Foren mit technischem Support von TI-Ingenieuren

Alle Forenthemen auf Englisch anzeigen

Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.

Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support. ​​​​​​​​​​​​​​

Videos