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LM3530
Controlador LED blanco de alta eficiencia con capacidad programable de detección de luz ambiental
Hoja de datos
LM3530
- Drives up to 11 LEDs in series
- 1000:1 Dimming Ratio
- 90% Efficient
- Programmable Dual Ambient Light Sensor Inputs
with Internal ALS Voltage Setting Resistors - I2C Programmable Logarithmic or
Linear Brightness Control - External PWM Input for Simple Brightness
Adjustment - True Shutdown Isolation for LEDs and Ambient
Light Sensors - Internal Soft-Start Limits Inrush Current
- Wide 2.7-V to 5.5-V Input Voltage Range
- 40-V and 25-V Overvoltage Protection Options
- 500-kHz Fixed Frequency Operation
- 839-mA Peak Current Limit
The LM3530 current mode boost converter supplies the power and controls the current in up to 11 series white LEDs. The 839-mA current limit and 2.7-V to 5.5-V input voltage range make the device a versatile backlight power source ideal for operation in portable applications.
The LED current is adjustable from 0 mA to 29.5 mA via an I2C-compatible interface. The 127 different current steps and 8 different maximum LED current levels give over 1000 programmable LED current levels. Additionally, PWM brightness control is possible through an external logic level input.
The device also features two Ambient Light Sensor inputs. These are designed to monitor analog output ambient light sensors and provide programmable adjustment of the LED current with changes in ambient light. Each ambient light sensor input has independently programmable internal voltage setting resistors which can be made high impedance to reduce power during shutdown. The 500-kHz switching frequency allows for high converter efficiency over a wide output voltage range accommodating from 2 to 11 series LEDs. Finally, the support of Content Adjusted Backlighting maximizes battery life while maintaining display image quality.
The LM3530 operates over the −40°C to 85°C temperature range.
Documentación técnica
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Ver todo 7 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LM3530 High-Efficiency White-LED Driver with Programmable Ambient Light Sensing Capability and I2C-Compatible Interface datasheet (Rev. L) | PDF | HTML | 23 dic 2014 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 sep 2020 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 21 dic 2016 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 24 oct 2016 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 06 sep 2016 | ||
| User guide | AN-1991 LM3530 Evaluation Kit (Rev. A) | 30 abr 2013 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Controlador o biblioteca
LM3530SW-LINUX — Controlador Linux para LM3530
The Linux driver supports the LM3530 White LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- lm3530
Linux Source Files
The files (...)
Herramienta de simulación
PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| DSBGA (YFQ) | 12 | Ultra Librarian |
| DSBGA (YFZ) | 12 | Ultra Librarian |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
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Soporte y capacitación
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