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Drivers LED RGB

LP5009

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Controlador LED RGB de corriente constante I2C de 9 canales

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LP5009

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Detalles del producto

Number of channels 9 LED current per channel (mA) 35 LED configuration Parallel Program memory No Topology Current Sink Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.035 Features Constant current, Current control, I2C control Iq (typ) (mA) 0.01 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 9 LED current per channel (mA) 35 LED configuration Parallel Program memory No Topology Current Sink Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.035 Features Constant current, Current control, I2C control Iq (typ) (mA) 0.01 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (PW) 24 49.92 mm² (7.8 mm × 6.4 mm) WQFN (RUK) 20 9 mm² (3 mm × 3 mm)
  • Operating voltage range:
    • VCC range: 2.7 V to 5.5 V
    • EN, SDA, and SCL pins compatible with 1.8-V, 3.3-V, and 5-V power rails
    • Output maximum voltage: 6 V
  • 12 Constant-current sinks with high precision
    • 25.5 mA Maximum per channel with VCC in full range
    • 35 mA Maximum per channel when VCC ≥ 3.3 V
    • Device-to-device error: ±5%; channel-to-channel error: ±5%
  • Ultra-low quiescent current:
    • Shutdown mode: 1 µA (maximum) with EN low
    • Power-saving mode: 10 µA (typical) with EN high and all LEDs off for > 30 ms
  • Integrated 12-bit, 29-kHz PWM generator for each channel:
    • Independent color-mixing register per channel
    • Independent brightness-control register per RGB LED module
    • Optional logarithmic- or linear-scale brightness control
    • Integrated 3-phase PWM-shifting scheme
  • 3 Programmable banks (R, G, B) for easy software control of each color
  • 2 External hardware address pins allow connecting up to 4 devices
  • Broadcast slave address allows configuring multiple devices simultaneously
  • Auto-increment allows writing or reading consecutive registers within one transmission
  • Up to 400-kHz fast-mode I2C speed
  • Operating voltage range:
    • VCC range: 2.7 V to 5.5 V
    • EN, SDA, and SCL pins compatible with 1.8-V, 3.3-V, and 5-V power rails
    • Output maximum voltage: 6 V
  • 12 Constant-current sinks with high precision
    • 25.5 mA Maximum per channel with VCC in full range
    • 35 mA Maximum per channel when VCC ≥ 3.3 V
    • Device-to-device error: ±5%; channel-to-channel error: ±5%
  • Ultra-low quiescent current:
    • Shutdown mode: 1 µA (maximum) with EN low
    • Power-saving mode: 10 µA (typical) with EN high and all LEDs off for > 30 ms
  • Integrated 12-bit, 29-kHz PWM generator for each channel:
    • Independent color-mixing register per channel
    • Independent brightness-control register per RGB LED module
    • Optional logarithmic- or linear-scale brightness control
    • Integrated 3-phase PWM-shifting scheme
  • 3 Programmable banks (R, G, B) for easy software control of each color
  • 2 External hardware address pins allow connecting up to 4 devices
  • Broadcast slave address allows configuring multiple devices simultaneously
  • Auto-increment allows writing or reading consecutive registers within one transmission
  • Up to 400-kHz fast-mode I2C speed

In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing and chasing that greatly improves user experience, and minimal system noise is essential.

The LP50xx device is an 9- or 12-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29-kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.

The LP50xx device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.

The LP50xx device implements an automatic power-saving mode to achieve ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, which makes the LP50xx device a potential choice for battery-powered end equipment.

In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing and chasing that greatly improves user experience, and minimal system noise is essential.

The LP50xx device is an 9- or 12-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29-kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.

The LP50xx device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.

The LP50xx device implements an automatic power-saving mode to achieve ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, which makes the LP50xx device a potential choice for battery-powered end equipment.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LP50xx 9-, 12-Channel, 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivrs datasheet (Rev. B) 21/08/2020
Informe Common LED Functions and LED Driver Design Considerations 21/09/2020
Nota sobre la aplicación System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device 8/04/2020
Nota sobre la aplicación How to Select a RGB LED Driver 8/08/2019

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

LP5012EVM — LP5012EVM, módulo de evaluación de controlador de LED RGB con corriente quiescente ultrabaja y PWM d

El LP5012EVM (módulo de evaluación) ayuda al usuario a evaluar las funciones del LP5012 de Texas Instruments, con un controlador LED de corriente constante, 12 canales y controlado por bus I2C. La guía del usuario incluye instrucciones de configuración, un diagrama esquemático, una lista de (...)
Guía del usuario: PDF
Productos y hardware compatibles
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GUI para el módulo de evaluación (EVM)

SLVC713 — LP50EVM GUI

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 24 Ultra Librarian
WQFN (RUK) 20 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

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Soporte y capacitación

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