Startseite Energiemanagement LED-Treiber RGB-LED-Treiber
Startseite
Energiemanagement
LED-Treiber
RGB-LED-Treiber

LM2755

AKTIV

Ladepumpen-LED-Controller mit I2C-kompatibler Schnittstelle in Micro SMD

Jetzt bestellen
Datenblatt

Eine neuere Version dieses Produkts ist verfügbar

open-in-new Alternativen vergleichen
Ähnliche Funktionalität wie verglichener Baustein
NEU LP5810 AKTIV 4-Kanal-RGBW-LED-Treiber mit I²C und automatischer Animationssteuerung Synchronous boost, lower IQ and smaller size

LM2755

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Number of channels 3 LED current per channel (mA) 25 LED configuration Parallel Program memory No Topology Charge pump, Current Sink Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.09 Features Constant current, Current control, I2C control, Programmable lighting engines Iq (typ) (mA) 1 Shutdown current (ISD) (typ) (µA) 5 Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 3 LED current per channel (mA) 25 LED configuration Parallel Program memory No Topology Charge pump, Current Sink Programmable ramp control Yes Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.09 Features Constant current, Current control, I2C control, Programmable lighting engines Iq (typ) (mA) 1 Shutdown current (ISD) (typ) (µA) 5 Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YFQ) 18 3.57408 mm² 1.9856 x 1.8
  • 90% Peak Efficiency
  • Total solution size < 13mm2
  • No Inductor Required: Only 4 Inexpensive Ceramic Caps
  • 3 Independently Controlled Constant Current Outputs
  • Programmable Trapezoidal Dimming Waveform on Each Output
  • Programmable Timing Control Via Internal Registers and External Clock Synchronization Input
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio
  • Programmable Brightness Control via I2C-Compatible Interface
  • Hardware Enable Pin
  • Wide Input Voltage Range: 2.7V to 5.5V
  • Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x 0.6mm

All trademarks are the property of their respective owners.

  • 90% Peak Efficiency
  • Total solution size < 13mm2
  • No Inductor Required: Only 4 Inexpensive Ceramic Caps
  • 3 Independently Controlled Constant Current Outputs
  • Programmable Trapezoidal Dimming Waveform on Each Output
  • Programmable Timing Control Via Internal Registers and External Clock Synchronization Input
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio
  • Programmable Brightness Control via I2C-Compatible Interface
  • Hardware Enable Pin
  • Wide Input Voltage Range: 2.7V to 5.5V
  • Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x 0.6mm

All trademarks are the property of their respective owners.

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I2C-compatible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed to linearly spaced) to better match the response of the human eye to changing brightness levels.

The device requires only four small and low-cost ceramic capacitors. The LM2755 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in a gain of 1. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage requirements.

The pre-regulation scheme used by the LM2755 is optimized to ensure low conducted noise on the input. An internal soft-start circuitry eliminates high inrush current at start-up. The LM2755 consumes 3µA (typ.) of supply current in shut-down.

The LM2755 is available in Texas Instruments' tiny 18-bump thin DSBGA package.

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I2C-compatible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed to linearly spaced) to better match the response of the human eye to changing brightness levels.

The device requires only four small and low-cost ceramic capacitors. The LM2755 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in a gain of 1. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage requirements.

The pre-regulation scheme used by the LM2755 is optimized to ensure low conducted noise on the input. An internal soft-start circuitry eliminates high inrush current at start-up. The LM2755 consumes 3µA (typ.) of supply current in shut-down.

The LM2755 is available in Texas Instruments' tiny 18-bump thin DSBGA package.
filter Andere RGB-LED-Treiber 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 5
Typ Titel Datum
* Data sheet LM2755 Charge Pump LED Controller with I2C Compatible Interface in DSBGA Package datasheet (Rev. D) 07 Mär 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
Application note Designing Energy-Efficient Handheld Illum Solutions (Rev. A) 30 Apr 2013
Application note LM2755 Charge Pump LED Controller with I2C Compatible Interface in SMD (Rev. A) 30 Apr 2013

Design und Entwicklung

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

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) 18 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