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Product details

Parameters

Number of channels (#) 12 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) 0.035 Features I2C Control Iq (Typ) (mA) 0.01 Shutdown current (Typ) (uA) 1 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other RGB LED drivers

Package | Pins | Size

TSSOP (PW) 24 34 mm² 7.7 x 4.4 WQFN (RUK) 20 9 mm² 3 x 3 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
  • 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
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Description

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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Technical documentation

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Type Title Date
* Data sheet LP50xx 9-, 12-Channel, 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivrs datasheet (Rev. B) Aug. 21, 2020
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Technical article Overcoming common design challenges in an UV sterilization box system Jul. 27, 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
User guide LP5012EVM User's Guide May 08, 2019
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article 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
document-generic User guide
149
Description
The LP5012EVM (evaluation module) helps the user evaluate the features of the Texas Instruments LP5012, whichis an I2C bus-controlled, 12-channel, constant-current LED driver. The user’s guide includes set-up instructions, a schematic diagram, a bill of materials, printed-circuit board layout (...)
Features
  • Easy to verify the LP5012 device full function
  • Easy to confirm the LP5012 device performance with the RBG LED modules
  • Easy to design the fashion lighting pattern with the demo effect

Software development

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

Design tools & simulation

SIMULATION MODEL Download
SLVMD46B.ZIP (85 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
  • (...)

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options
WQFN (RUK) 20 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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