Datasheet Texas Instruments LP8557AYFQR
Manufacturer | Texas Instruments |
Series | LP8557 |
Part Number | LP8557AYFQR |
High-Efficiency LED Backlight Driver for Tablets 16-DSBGA -30 to 85
Datasheets
LP8557 High-Efficiency LED Backlight Driver For Tablets datasheet
PDF, 1.7 Mb, Revision: B, File published: Dec 18, 2015
Extract from the document
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Status
Lifecycle Status | Active (Recommended for new designs) |
Manufacture's Sample Availability | Yes |
Packaging
Pin | 16 |
Package Type | YFQ |
Industry STD Term | DSBGA |
JEDEC Code | S-XBGA-N |
Package QTY | 3000 |
Carrier | LARGE T&R |
Device Marking | D40 |
Thickness (mm) | .42 |
Pitch (mm) | .4 |
Max Height (mm) | .675 |
Mechanical Data | Download |
Parametrics
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 |
Eco Plan
RoHS | Compliant |
Design Kits & Evaluation Modules
- 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)
Application Notes
- Schottky Diode Selection in Asynchronous Boost ConvertersPDF, 491 Kb, File published: 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 ApplicationsPDF, 764 Kb, File published: 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.
Model Line
Series: LP8557 (4)
- LP8557AYFQR LP8557AYFQT LP8557IAYFQR LP8557IAYFQT
Manufacturer's Classification
- Semiconductors > Power Management > LED Driver > Backlight LED Driver