Datasheet Texas Instruments LP8550 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | LP8550 |
Controlador de retroiluminación LED de alta eficiencia para portátiles
Hojas de datos
LP8550 High-Efficiency LED Backlight Driver for Notebooks datasheet
PDF, 1.5 Mb, Revisión: E, Archivo publicado: sept 9, 2014
Extracto del documento
Precios
Estado
| LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB | |
|---|---|---|---|
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | Sí | No | No |
Embalaje
| 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 | Descargar | Descargar | Descargar |
Paramétricos
| 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 |
Plan ecológico
| LP8550TLE/NOPB | LP8550TLX-A/NOPB | LP8550TLX/NOPB | |
|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente |
Notas de aplicación
- Increasing Full-Load Efficiency of a Backlight DriverPDF, 1.2 Mb, Archivo publicado: 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, Archivo publicado: 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.
Linea modelo
Serie: LP8550 (3)
Clasificación del fabricante
- Semiconductors> Power Management> LED Driver> Backlight