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Product details

Parameters

Channels (#) 24 LED current per channel (mA) 35 LED configuration Parallel Program memory No Programmable ramp control No Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Iout (Max) (A) 0.84 Iq (Typ) (mA) 0.01 Features Constant Current, Current Control, I2C Control, Power Save Mode Shutdown current (Typ) (uA) 0.2 Operating temperature range (C) -40 to 85 open-in-new Find other RGB LED drivers

Package | Pins | Size

VQFN (RSM) 32 16 mm² 4 x 4 open-in-new Find other RGB LED drivers

Features

  • 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
  • 24 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: ±7%; Channel-to-Channel Error: ±7%
  • Ultralow 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

All trademarks are the property of their respective owners.

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Description

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

The LP50xx device is an 18- or 24-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 ultralow 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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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2C RGB LED Drivers datasheet (Rev. B) Oct. 24, 2018
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Application note System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device Apr. 08, 2020
Application note How to Select a RGB LED Driver Aug. 08, 2019
White paper Smart speaker fundamentals: Weighing the many design trade-offs Feb. 25, 2019
White paper 智慧型喇叭基本說明: 衡量各種設計優缺點 Feb. 08, 2019
White paper 스마트 스피커 기본 사항: 설계 장단점 따져 보기 Feb. 08, 2019
Technical articles Using an RGBW LED driver to elevate LED human-machine interface designs Nov. 27, 2018
User guide LP5024EVM User's Guide Mar. 14, 2018
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
149

Software development

GUI FOR EVALUATION MODULE (EVM) Download
SLVC713A.ZIP (86539 KB)

Design tools & simulation

SIMULATION MODEL Download
SLVMCI3.ZIP (10 KB) - PSpice Model
SIMULATION MODEL Download
SLVMCI4.ZIP (116 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Various LED Ring Lighting Patterns Reference Design
TIDA-050011 — This reference design enables human-machine interface scenarios with an LED ring that utilizes two LP5024 LED drivers to create vivid lighting patterns. Design helps to resolve common challenges for end equipment with complicated lighting patterns and constant voltage supply. This design can also (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VQFN (RSM) 32 View options

Ordering & quality

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  • Ongoing reliability monitoring

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