GUI para el módulo de evaluación (EVM)
LP55231
Controlador LED RGB/Blanco de 9 canales con memoria de programa interna y bomba de carga integrada:
Hoja de datos
LP55231
- Three Independent Program Execution Engines, 9 Programmable Outputs With 25.5-mA Full-Scale Current, 8-Bit Current Setting Resolution and
12-Bit PWM Control Resolution - Adaptive High-Efficiency 1×/1.5× Fractional Charge Pump - Efficiency up to 94%
- LED Drive Efficiency Up to 93%
- Charge Pump With Soft Start
- Overcurrent and Short-Circuit Protection
- Built-in LED Test
- 200-nA Typical Standby Current
- Automatic Power Save Mode; IVDD = 10 µA (Typical)
- Two-Wire I2C-Compatible Control Interface
- Flexible Instruction Set
- Large SRAM Program Memory
- Small Application Circuit
- Source (High-Side) Drivers
- Architecture Supports Color Control
The LP55231 is a 9-channel LED driver designed to produce lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control.
The LP55231 has an I2C-compatible control interface with four pin-selectable addresses. The INT pin can be used to notify processor when a lighting sequence has ended (interrupt function). Also, the device has a trigger input interface, which allows synchronization, for example, between multiple LP55231 devices. Excellent efficiency is maintained over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The device is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typical). Only four small and low-cost ceramic capacitors are required.
For all available packages, see the orderable addendum at the end of the data sheet.Documentación técnica
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Ver todo 5 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN datasheet (Rev. D) | PDF | HTML | 29 dic 2016 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 sep 2020 | ||
| Application note | How to Select a RGB LED Driver | 08 ago 2019 | ||
| Technical article | How energy harvesting can extend the life of your fault indicator on the grid | PDF | HTML | 18 oct 2017 | |
| EVM User's guide | LP55231EVM User's Guide (Rev. B) | 11 dic 2015 |
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.
Placa de evaluación
LP55231SQEVM — Placa de módulo de evaluación de controlador LED programable de 9 salidas
Programmable 9-Output LED Driver Evaluation Module Board
The LP55231EVM demonstrates the flexibility and programability of LP55231 for dimming and sequencing control of LEDs. Guía del usuario: PDF
Controlador o biblioteca
LP5523SW-LINUX — Controlador Linux para LP5523
The Linux driver supports the LP5523 series of LED Drivers. 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:
- lp5523
- lp55231
Linux Source Files
(...)
Herramienta de simulación
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| Paquete | Pasadores | Descargar |
|---|---|---|
| WQFN (RTW) | 24 | Ver opciones |
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
Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.