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Product details

Parameters

Channels (#) 9 LED current per channel (mA) 35 LED configuration Parallel LED (#) 9 Program memory No Programmable ramp control No Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 2.7 Vout (Max) (V) 5.5 Iout (Max) (A) 0.035 Iq (Typ) (mA) 0.01 Shutdown current (Typ) (uA) 1 Features Constant Current, Current Control, I2C Control Operating temperature range (C) -40 to 85 open-in-new Find other RGB & white LED drivers

Package | Pins | Size

WQFN (RUK) 20 9 mm² 3 x 3 open-in-new Find other RGB & white 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

All trademarks are the property of their respective owners.

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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
* Datasheet LP50xx 9-, 12-Channel, 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivers datasheet (Rev. A) Jul. 11, 2019
Application notes System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device Apr. 08, 2020
Application notes How to Select a RGB LED Driver Aug. 08, 2019
User guides LP5012EVM User's Guide May 08, 2019
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
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$149.00
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
GUIS FOR EVALUATION MODULES (EVM) Download
SLVC713A.ZIP (86539 KB)

CAD/CAE symbols

Package Pins Download
WQFN (RUK) 20 View options

Ordering & quality

Support & training

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Videos

Time-multiplexing LED matrix

In order to achieve great display performance, some applications require LED matrix. This training shows examples of time-multiplexing structures in action.

Posted: 26-Jan-2019
Duration: 02:25

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