Firmware
LM3633
Solución de potencia de iluminación completa para teléfonos inteligentes
Hoja de datos
LM3633
- Drives Three Parallel High-Voltage LED Strings
for Display and Keypad Lighting - High-Voltage Strings Capable of up to 40-V
Output Voltage and up to 90% Efficiency - Up to 30-mA per Current Sink
(Both Backlight and Indicator) - 11-Bit High-Voltage LED Dimming
- PWM Input for Content Adjustable Brightness
Control (CABC) - Integrated 1-A/40-V MOSFET
- Adaptive Boost Output to LED Voltages
- Six Low-Voltage Current Sinks for Indicator LEDs
- Integrated Charge Pump for Improved Efficiency
and VIN Operating Range - Internal Pattern Generation Engine for Each
Indicator LED - Fully Configurable LED Grouping and Control
- Four Programmable Overvoltage Protection
Thresholds (16 V, 24 V, 32 V, and 40 V) - Programmable 500-kHz and 1-MHz
Switching Frequency - Overcurrent Protection
- Thermal Shutdown Protection
- 27 mm2 Total Solution Size
The LM3633 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 parallel high-voltage LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.
The LM3633 is a complete power source for backlight, keypad, and indicator LEDs in smartphone handsets. The high-voltage inductive boost converter provides the power for three parallel LED strings (HVLED1, HVLED2 and HVLED3). The integrated charge pump provides the bias for the six low-voltage indicator LEDs (LVLED1-LVLED6). All low-voltage current sinks can have a programmable pattern modulated onto their output current for a wide variety of blinking patterns.
An additional feature is a Pulse Width Modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.
The LM3633 is fully programmable via an I2C-compatible interface. The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.
For all available packages, see the orderable addendum at the end of the datasheet.Documentación técnica
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Ver todo 6 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LM3633 Complete Lighting Power Solution for Smartphone Handsets datasheet | PDF | HTML | 04 jun 2014 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 sep 2020 | ||
| 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 | ||
| EVM User's guide | LM3633 User's Guide | 05 jun 2014 |
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
LM3633SW-LINUX — Controlador Linux para LM3633
The Linux driver supports the LM3633 LMU (Lighting Management Unit) device. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.
Linux Mainline Status
Available in Linux Main line: No
Available through git.ti.com: (...)
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) | 20 | 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
Soporte y capacitación
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