Datasheet Texas Instruments LP8557AYFQT — Ficha de datos

Controlador de retroiluminación LED de alta eficiencia para tabletas 16-DSBGA -30 a 85

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PDF, 1.7 Mb, Revisión: B, Archivo publicado: dic 18, 2015

Extracto del documento

Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No

Number of Channels	6
Duty Cycle(Max)	100 %
LED	48
LED Current Per Channel	25 mA
Operating Temperature Range	-30 to 85 C
Package Group	DSBGA
Package Size: mm2:W x L	See datasheet (DSBGA) PKG
Peak Efficiency	93 %
Rating	Catalog
Shutdown Current(Typ)	0.001 uA
Special Features	CABC,Edge Rate Control
Switching Frequency(Max)	1000 kHz
Topology	Boost
Type	Inductive
Vin(Max)	5.5 V
Vin(Min)	2.7 V
Vout(Max)	28 V
Vout(Min)	7 V

RoHS

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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.

Serie: LP8557 (4)