Datasheet Texas Instruments LP8550
| Manufacturer | Texas Instruments |
| Series | LP8550 |
High-Efficiency LED Backlight Driver for Notebooks
Datasheets
LP8550 High-Efficiency LED Backlight Driver for Notebooks datasheet
PDF, 1.5 Mb, Revision: E, File published: Sep 9, 2014
Extract from the document
Prices
Status
| LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB | |
|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No | No |
Packaging
| LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Pin | 25 | 25 | 25 |
| Package Type | YZR | YZR | YZR |
| Industry STD Term | DSBGA | DSBGA | DSBGA |
| JEDEC Code | S-XBGA-N | S-XBGA-N | S-XBGA-N |
| Package QTY | 250 | 3000 | 3000 |
| Carrier | SMALL T&R | LARGE T&R | LARGE T&R |
| Device Marking | 8550 | D71B | 8550 |
| Width (mm) | 2.8 | 2.8 | 2.8 |
| Length (mm) | 3 | 3 | 3 |
| Thickness (mm) | .675 | .675 | .675 |
| Pitch (mm) | .5 | .5 | .5 |
| Max Height (mm) | .675 | .675 | .675 |
| Mechanical Data | Download | Download | Download |
Parametrics
| Parameters / Models | LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB |
|---|---|---|---|
| Number of Channels | 6 | 6 | 6 |
| Duty Cycle(Max), % | 100 | 100 | 100 |
| LED | 60 | 60 | 60 |
| LED Current Per Channel, mA | 50 | 50 | 50 |
| Operating Temperature Range, C | -30 to 85 | -30 to 85 | -30 to 85 |
| Package Group | DSBGA | DSBGA | DSBGA |
| Package Size: mm2:W x L, PKG | See datasheet (DSBGA) | See datasheet (DSBGA) | See datasheet (DSBGA) |
| Peak Efficiency, % | 91 | 91 | 91 |
| Rating | Catalog | Catalog | Catalog |
| Shutdown Current(Typ), uA | 1 | 1 | 1 |
| Special Features | Adjustable Switch Frequency,Enable/Shutdown,I2C Control,PWM Control | Adjustable Switch Frequency,Enable/Shutdown,I2C Control,PWM Control | Adjustable Switch Frequency,Enable/Shutdown,I2C Control,PWM Control |
| Switching Frequency(Max), kHz | 1250 | 1250 | 1250 |
| Topology | Boost | Boost | Boost |
| Type | Inductive | Inductive | Inductive |
| Vin(Max), V | 22 | 22 | 22 |
| Vin(Min), V | 5.5 | 5.5 | 5.5 |
| Vout(Max), V | 40 | 40 | 40 |
| Vout(Min), V | 10 | 10 | 10 |
Eco Plan
| LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
Application Notes
- 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. - 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: LP8550 (3)
Manufacturer's Classification
- Semiconductors> Power Management> LED Driver> Backlight
