Datasheet Texas Instruments LM36923 — Datenblatt

HerstellerTexas Instruments
SerieLM36923
Datasheet Texas Instruments LM36923

Hocheffizienter 30-V-synchroner weißer LED-Treiber mit drei Saiten

Datenblätter

LM36923 Highly Efficient Triple-String White LED Driver datasheet
PDF, 2.0 Mb, Revision: A, Datei veröffentlicht: Oct 7, 2016
Auszug aus dem Dokument

Preise

Status

LM36923YFFR
Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes

Verpackung

LM36923YFFR
N1
Pin12
Package TypeYFF
Industry STD TermDSBGA
JEDEC CodeR-XBGA-N
Package QTY3000
CarrierLARGE T&R
Device Marking36923
Width (mm)1.16
Length (mm)2
Thickness (mm)1.6
Pitch (mm).4
Max Height (mm).625
Mechanical DataHerunterladen

Parameter

Parameters / ModelsLM36923YFFR
LM36923YFFR
Number of Channels3
Duty Cycle(Max), %94
LED24
LED Current Per Channel, mA25
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,Direct PWM Dimming,Enable/Shutdown,I2C Control,OVP,PWM Control,Thermal Shutdown
Switching Frequency(Max), kHz1050
TopologyBoost
TypeInductive
Vin(Max), V5.5
Vin(Min), V2.5
Vout(Max), V29.5

Öko-Plan

LM36923YFFR
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: LM36923 (1)

Herstellerklassifikation

  • Semiconductors> Power Management> LED Driver> Backlight