LP5521
Controlador LED RGB/Blanco de 3 canales con memoria de programa interna y bomba de carga integrada
Se encuentra disponible una versión más nueva de este producto
LP5521
- Adaptive Charge Pump With 1× and 1.5× Gain Provides Up to 95% LED Drive Efficiency
- Charge Pump with Soft Start and Overcurrent, Short-Circuit Protection
- Low Input Ripple and EMI
- Very Small Solution Size, No Inductor or Resistors Required
- 200-nA Typical Shutdown Current
- Automatic Power Save Mode
- I2C-Compatible Interface
- Independently Programmable Constant Current Outputs with 8-Bit Current Setting and 8-Bit PWM Control
- Typical LED Output Saturation Voltage 50 mV and Current Matching 1%
- Three Program Execution Engines with Flexible Instruction Set
- Autonomous Operation Without External Control
- Large SRAM Program Memory
- Two General Purpose Digital Outputs
The LP5521 is a three-channel LED driver designed to produce variety of lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate autonomously without processor control allowing power savings.
The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.
Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.
The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C-compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.
The LP5521 requires only four small, low-cost ceramic capacitors.
Comprehensive application tools are available, including command compiler for easy LED sequence programming.
For all available packages, see the orderable addendum at the end of the data sheet.Documentación técnica
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LP5521 Three-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump datasheet (Rev. I) | PDF | HTML | 04 nov 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 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
| User guide | AN-1632 LP5521TM Evaluation Kit (Rev. E) | 23 sep 2016 | ||
| Application note | AN-1523 LP5521 Power Efficiency Considerations (Rev. C) | 30 abr 2013 | ||
| Application note | AN-1562 LP5521 Programming Considerations (Rev. A) | 30 abr 2013 | ||
| Application note | Color-Management LED Drivers Have a Bright Future | 20 jun 2007 |
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.
LP5521TMEV — Kit de evaluación LP5521
The LP5521 is a three channel LED driver designed to produce a variety of lighting effects for mobile devices. A high efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory (...)
LP5523EVM — Módulo de evaluación de controladores LED programables LP5523 de 9 salidas
The LP5523 is a fully integrated lighting management unit for producing lighting effects for mobile devices. The LP5523 includes all necessary power management, high-side current sources, temperature compensation, two wire (I2C compatible) control interface and programmable pattern generators. The (...)
LP5521SW-LINUX — Controlador Linux para LP5521
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- lp5521
Linux Source Files
The (...)
PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| DSBGA (YFQ) | 20 | Ultra Librarian |
| VQFN (NJA) | 24 | Ultra Librarian |
Pedidos y calidad
- 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
- 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.