Datasheet Texas Instruments LP8557IAYFQR — Datenblatt

HerstellerTexas Instruments
SerieLP8557
ArtikelnummerLP8557IAYFQR
Datasheet Texas Instruments LP8557IAYFQR

Hocheffizienter LED-Hintergrundbeleuchtungstreiber für Tablets 16-DSBGA -30 bis 85

Datenblätter

LP8557 High-Efficiency LED Backlight Driver For Tablets datasheet
PDF, 1.7 Mb, Revision: B, Datei veröffentlicht: Dec 18, 2015
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Preise

Status

Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes

Verpackung

Pin16
Package TypeYFQ
Industry STD TermDSBGA
JEDEC CodeS-XBGA-N
Package QTY3000
CarrierLARGE T&R
Device MarkingD41
Thickness (mm).42
Pitch (mm).4
Max Height (mm).675
Mechanical DataHerunterladen

Parameter

Number of Channels6
Duty Cycle(Max)100 %
LED48
LED Current Per Channel25 mA
Operating Temperature Range-30 to 85 C
Package GroupDSBGA
Package Size: mm2:W x LSee datasheet (DSBGA) PKG
Peak Efficiency93 %
RatingCatalog
Shutdown Current(Typ)0.001 uA
Special FeaturesCABC,Edge Rate Control
Switching Frequency(Max)1000 kHz
TopologyBoost
TypeInductive
Vin(Max)5.5 V
Vin(Min)2.7 V
Vout(Max)28 V
Vout(Min)7 V

Öko-Plan

RoHSCompliant

Design Kits und Evaluierungsmodule

  • Evaluation Modules & Boards: LP8557IEVM
    Evaluation Module for LP8557 High Efficiency White LED Backlight Driver with I2C Control
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: LP8557EVM
    Evaluation Module for LP8557 6-channel High-Efficiency LCD Backlight Driver
    Lifecycle Status: Active (Recommended for new designs)

Anwendungshinweise

  • Schottky Diode Selection in Asynchronous Boost Converters
    PDF, 491 Kb, Datei veröffentlicht: Sep 6, 2016
    Asynchronous boost converters require a Schottky diode as the rectifying element due to the diode's lowforward voltage and fast turn-on time. Because of these characteristics asynchronous boost converterscan have as good as, or better efficiency, than synchronous boost converters. This is especially true whenthe boost conversion ratios (VOUT/VIN) are high, and the Schottky diode conduction t
  • Inductor Selection in Boost Converters for LCD Backlight Applications
    PDF, 764 Kb, Datei veröffentlicht: Oct 24, 2016
    White LED drivers for LCD back-light applications are often designed for battery-powered devices. This makes circuit size and efficiency crucial. Because of this, selecting the optimal inductor is one of the mostimportant aspects of the design. This application note discusses the important parameters of the inductorand how to select the right inductor for the application.

Modellreihe

Herstellerklassifikation

  • Semiconductors > Power Management > LED Driver > Backlight LED Driver