Startseite Energiemanagement LED-Treiber LED-Hintergrundbeleuchtungstreiber

LM3632A

AKTIV

Ein-Chip-Hintergrundbeleuchtung mit Bias-Stromversorgung und 1,5-A-Flash-LED-Treiber

Produktdetails

Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 29.5 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 92 Topology Boost, Current Sink, Multi-Channel Features Adjustable Switch Frequency, CABC, Direct PWM Dimming, Enable/Shutdown, I2C control, Integrated Switch, OVP, PWM control, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 29.5 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 92 Topology Boost, Current Sink, Multi-Channel Features Adjustable Switch Frequency, CABC, Direct PWM Dimming, Enable/Shutdown, I2C control, Integrated Switch, OVP, PWM control, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFF) 30 5.71999999999999912 mm² 2.2 x 2.5999999999999996
  • Drives up to Two Strings of Typically Eight LEDs
    in Series
    • Integrated Backlight Boost with 29-V Maximum
      Output Voltage
    • Two Low-Side Constant-Current LED Drivers
      with 25-mA Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Exponential or Linear Dimming
  • External PWM Input for CABC Backlight
    Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 50-
    mA Maximum Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    50-mA Maximum Output Current
  • 1.5-A Flash LED Boost
  • Flash Efficiency > 85%
  • 2.7-V to 5-V Input Voltage Range
  • Drives up to Two Strings of Typically Eight LEDs
    in Series
    • Integrated Backlight Boost with 29-V Maximum
      Output Voltage
    • Two Low-Side Constant-Current LED Drivers
      with 25-mA Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Exponential or Linear Dimming
  • External PWM Input for CABC Backlight
    Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 50-
    mA Maximum Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    50-mA Maximum Output Current
  • 1.5-A Flash LED Boost
  • Flash Efficiency > 85%
  • 2.7-V to 5-V Input Voltage Range

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.

A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.

A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.

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 LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver datasheet (Rev. A) PDF | HTML 10 Sep 2015
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Application note Analog PWM Dimming in White-LED Drivers 21 Dez 2016
EVM User's guide LM3632A Evaluation Module User's Guide 24 Mär 2015

Design und Entwicklung

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

Evaluierungsplatine

LM3632EVM — LM3632EVM Ein-Chip-Hintergrundbeleuchtung mit Bias-Stromversorgung und 1,5-A-Flash-LED-Treiber

The LM3632EVM aids in evaluation of the LM3632 Single-Chip Backlight + Bias Power + 1.5-A Flash LED Driver.

The LM3632 contains 3 major blocks:

  • A high efficiency backlight driver capable of driving 2 LED strings of up to 8 LEDs per string.
  • A set of positive and negative bias supplies of programmable (...)
Benutzerhandbuch: PDF
Treiber oder Bibliothek

LM3532SW-LINUX — Linux-Treiber für LM3532

The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.

 

Linux Mainline Status

Available in Linux Main line: No
Available through git.ti.com: (...)

GUI für Evaluierungsmodul (EVM)

SNVC182 LM3632EVM GUI v1.0

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
LED-Hintergrundbeleuchtungstreiber
LM3632A Ein-Chip-Hintergrundbeleuchtung mit Bias-Stromversorgung und 1,5-A-Flash-LED-Treiber
Hardware-Entwicklung
Evaluierungsplatine
LM3632EVM LM3632EVM Ein-Chip-Hintergrundbeleuchtung mit Bias-Stromversorgung und 1,5-A-Flash-LED-Treiber
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
DSBGA (YFF) 30 Ultra Librarian

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

Support und Schulungen

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

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