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LP55231

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9 channel RGB / White LED driver with internal program memory and integrated charge Pump - WQFN

Data sheet
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9 channel RGB / White LED driver with internal program memory and integrated charge Pump - WQFN

LP55231

ACTIVE
Data sheet Order now

Product details

Parameters

Channels (#) 9 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Programmable ramp control Yes Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Iout (Max) (A) 0.0255 Features Analog/PWM Mixed Dimming, Constant Current, Current Control, I2C Control, Power Save Mode, Programmable Lighting Engines Iq (Typ) (mA) 0.8 Shutdown current (Typ) (uA) 0.2 Peak efficiency (%) 94 Operating temperature range (C) -30 to 85 open-in-new Find other RGB LED drivers

Package | Pins | Size

WQFN (RTW) 24 16 mm² 4 x 4 open-in-new Find other RGB LED drivers

Features

  • Three Independent Program Execution Engines, 9 Programmable Outputs With 25.5-mA Full-Scale Current, 8-Bit Current Setting Resolution and
    12-Bit PWM Control Resolution
  • Adaptive High-Efficiency 1×/1.5× Fractional Charge Pump - Efficiency up to 94%
  • LED Drive Efficiency Up to 93%
  • Charge Pump With Soft Start
  • Overcurrent and Short-Circuit Protection
  • Built-in LED Test
  • 200-nA Typical Standby Current
  • Automatic Power Save Mode; IVDD = 10 µA (Typical)
  • Two-Wire I2C-Compatible Control Interface
  • Flexible Instruction Set
  • Large SRAM Program Memory
  • Small Application Circuit
  • Source (High-Side) Drivers
  • Architecture Supports Color Control
 open-in-new Find other RGB LED drivers

Description

The LP55231 is a 9-channel LED driver designed to produce lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control.

The LP55231 has an I2C-compatible control interface with four pin-selectable addresses. The INT pin can be used to notify processor when a lighting sequence has ended (interrupt function). Also, the device has a trigger input interface, which allows synchronization, for example, between multiple LP55231 devices. Excellent efficiency is maintained over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The device is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typical). Only four small and low-cost ceramic capacitors are required.

For all available packages, see the orderable addendum at the end of the data sheet.

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Technical documentation

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Type Title Date
* Datasheet LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN datasheet (Rev. D) Dec. 29, 2016
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Application note How to Select a RGB LED Driver Aug. 08, 2019
Technical article How energy harvesting can extend the life of your fault indicator on the grid Oct. 18, 2017
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
User guide LP55231EVM User's Guide (Rev. B) Dec. 11, 2015
Technical article Enhancing your Internet-connected home device Apr. 24, 2015

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
75
Description

Programmable 9-Output LED Driver Evaluation Module Board

The LP55231EVM demonstrates the flexibility and programability of LP55231 for dimming and sequencing control of LEDs.
Features
  • 9 White LEDs for white lighting patterns
  • 3 RGB Color LED for color lighting patterns
  • On board ambient light sensor for as analog input to LP55231.
View details

Software development

DRIVER OR LIBRARY Download
Linux Driver for LP5523
LP5523SW-LINUX — The Linux driver supports the LP5523 series of LED Drivers. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • lp5523
  • lp55231

 

Linux Source Files

The (...)
GUI FOR EVALUATION MODULE (EVM) Download
SNVC132.ZIP (993 KB)

Design tools & simulation

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
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Smart Lock Reference Design Enabling 5+ Years Battery Life on 4x AA Batteries
TIDA-00757 — With the increasing number of building and home owners looking to retrofit smart locks (or electronic locks) to their building or home, wireless battery powered smart locks are becoming increasingly popular in today’s market.  In a smart lock application, the high current motor and radio (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Energy Harvesting and Fault Indicator Subsystem for Overhead Fault Indicators Reference Design
TIDA-00998 — The TIDA-00998 TI Design shows multiple architectures for extending primary battery life using a secondary battery or supercapacitor with energy harvested from a current transformer (CT) or solar cells. Optimal Power management is done using efficient LED Drivers to drive series or parallel strings (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Smart Damper Control Reference Design With Pressure, Humidity, and Temperature Sensing
TIDA-01067 — This reference design is built to enable multiple room comfort control in connected HVAC systems. Sensing temperature, humidity, and pressure allows independent monitoring and air-flow adjustment in each zone. This TI Design converts a constant air volume (CAV) into a variable air volume (VAV (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RTW) 24 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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

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