Datasheet Texas Instruments LP8557IAYFQR — Datenblatt

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

Datenblätter

PDF, 1.7 Mb, Revision: B, Datei veröffentlicht: Dec 18, 2015

Auszug aus dem Dokument

Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	Yes

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

Compliant

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

Herunterladen
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
Herunterladen
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.

Serie: LP8557 (4)