Datasheet Texas Instruments LM36274 — Datenblatt

HerstellerTexas Instruments
SerieLM36274
Datasheet Texas Instruments LM36274

Integrierter Hintergrundbeleuchtungstreiber mit LCD-Vorspannung

Datenblätter

Four-Channel LCD Backlight Driver With Integrated Bias Power datasheet
PDF, 5.5 Mb, Revision: C, Datei veröffentlicht: Jun 23, 2017
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Preise

Status

LM36274YFFR
Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes

Verpackung

LM36274YFFR
N1
Pin24
Package TypeYFF
Industry STD TermDSBGA
JEDEC CodeS-XBGA-N
Package QTY3000
CarrierLARGE T&R
Device MarkingLM36274
Thickness (mm).3
Pitch (mm).4
Max Height (mm).625
Mechanical DataHerunterladen

Parameter

Parameters / ModelsLM36274YFFR
LM36274YFFR
Number of Channels4
Duty Cycle(Max), %92
LED32
LED Current Per Channel, mA30
Operating Temperature Range, C-40 to 85
Package GroupDSBGA
Package Size: mm2:W x L, PKGSee datasheet (DSBGA)
Peak Efficiency, %92
RatingCatalog
Shutdown Current(Typ), uA1.2
Special FeaturesAdjustable Switch Frequency,CABC,I2C Control,OVP,Thermal Shutdown
Switching Frequency(Max), kHz1050
TopologyBoost,Current Sink
TypeInductive
Vin(Max), V5
Vin(Min), V2.7
Vout(Max), V30
Vout(Min), V27

Öko-Plan

LM36274YFFR
RoHSCompliant

Anwendungshinweise

  • Auto-Frequency Mode Setting for Improved Boost Efficiency in White LED Backlight
    PDF, 252 Kb, Datei veröffentlicht: Oct 14, 2016
    As the load current of a boost converter is reduced, the ratio of conduction losses to switching lossesbegins to lower. Conduction losses are losses that are a function of current. Switching losses are lossesthat are a function of switching frequency. As this ratio is reduced the boost switching losses begin todominate the total circuit losses. When this happens, the benefit of lowering the
  • Analog PWM Dimming in White-LED Drivers
    PDF, 539 Kb, Datei veröffentlicht: Dec 21, 2016
    Pulse-width modulation (PWM) is a common type of dimming used to adjust the current in white-LEDdriver devices. PWM dimming takes a rectangle waveform with variable positive duty cycle (D) and adjuststhe LED current proportionally. For many smaller format white LED drivers (7-inch screen size or smaller),the PWM signal is converted to a DC control voltage and made to drive the LED current in
  • 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

Serie: LM36274 (1)

Herstellerklassifikation

  • Semiconductors> Power Management> LED Driver> Backlight