Datasheet Texas Instruments LP8556SQ-E08/NOPB
| Manufacturer | Texas Instruments |
| Series | LP8556 |
| Part Number | LP8556SQ-E08/NOPB |
6 Channel High-Efficiency/Efficacy LED Backlight Driver 24-WQFN -30 to 85
Datasheets
LP8556 High-Efficiency LED Backlight Driver for Tablets datasheet
PDF, 1.2 Mb, Revision: I, File published: Mar 22, 2016
Extract from the document
Prices
Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 24 |
| Package Type | RTW |
| Industry STD Term | WQFN |
| JEDEC Code | S-PQFP-N |
| Package QTY | 1000 |
| Carrier | SMALL T&R |
| Device Marking | L8556E8 |
| Width (mm) | 4 |
| Length (mm) | 4 |
| Thickness (mm) | .75 |
| Pitch (mm) | .5 |
| Max Height (mm) | .8 |
| Mechanical Data | Download |
Parametrics
| Number of Channels | 6 |
| Duty Cycle(Max) | 100 % |
| LED | 60 |
| LED Current Per Channel | 50 mA |
| Operating Temperature Range | -30 to 85 C |
| Package Group | WQFN |
| Package Size: mm2:W x L | 24WQFN: 16 mm2: 4 x 4(WQFN) PKG |
| Peak Efficiency | 95 % |
| Rating | Catalog |
| Shutdown Current(Typ) | 0.1 uA |
| Special Features | I2C Control |
| Switching Frequency(Max) | 1250 kHz |
| Topology | Boost |
| Type | Inductive |
| Vin(Max) | 20 V |
| Vin(Min) | 2.7 V |
| Vout(Max) | 48 V |
| Vout(Min) | 7 V |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: LP8556TM-EVM
LP8556TM-EVM
Lifecycle Status: Active (Recommended for new designs) - Evaluation Modules & Boards: LP8556SQ-EVM
LP8556SQ-EVM
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- AN-1112 DSBGA Wafer Level Chip Scale Package (Rev. AG)PDF, 13.7 Mb, Revision: AG, File published: Aug 12, 2015
- Increasing Full-Load Efficiency of a Backlight DriverPDF, 1.2 Mb, File published: Jun 5, 2013
This application report discusses a way to increase the efficiency of the boost converter in a backlightdriver by reducing conduction and AC losses in the inductor, thereby increasing the overall efficiency ofthe backlight driver at higher loads. - 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. - 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 - Power Budget for Backlight DriversPDF, 592 Kb, File published: Jun 27, 2013
This application report discusses the Power Budget of an LED backlight driver. It provides experimental and theoretical methods of calculating different losses associated with LED backlight drivers. It also provides an analytical discussion on behavior of different losses vs brightness levels.
Model Line
Series: LP8556 (23)
- LP8556SQ-E00/NOPB LP8556SQ-E08/NOPB LP8556SQ-E09/NOPB LP8556SQE-E00/NOPB LP8556SQE-E08/NOPB LP8556SQE-E09/NOPB LP8556SQX-E00/NOPB LP8556SQX-E08/NOPB LP8556SQX-E09/NOPB LP8556TME-E02/NOPB LP8556TME-E03/NOPB LP8556TME-E04/NOPB LP8556TME-E05/NOPB LP8556TME-E06/NOPB LP8556TME-E09/NOPB LP8556TME-E11/NOPB LP8556TMX-E02/NOPB LP8556TMX-E03/NOPB LP8556TMX-E04/NOPB LP8556TMX-E05/NOPB LP8556TMX-E06/NOPB LP8556TMX-E09/NOPB LP8556TMX-E11/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > LED Driver > Backlight LED Driver
Other Names:
LP8556SQE08/NOPB, LP8556SQ E08/NOPB
