GUI for evaluation module (EVM)
LP55231
9 channel RGB / White LED driver with internal program memory and integrated charge Pump - WQFN
Data sheet
LP55231
- 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
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.Technical documentation
No results found. Please clear your search and try again.
View all 5 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN datasheet (Rev. D) | PDF | HTML | 29 Dec 2016 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Application note | How to Select a RGB LED Driver | 08 Aug 2019 | ||
| Technical article | How energy harvesting can extend the life of your fault indicator on the grid | PDF | HTML | 18 Oct 2017 | |
| EVM User's guide | LP55231EVM User's Guide (Rev. B) | 11 Dec 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LP55231SQEVM — Programmable 9-Output LED Driver Evaluation Module Board
Programmable 9-Output LED Driver Evaluation Module Board
The LP55231EVM demonstrates the flexibility and programability of LP55231 for dimming and sequencing control of LEDs. User guide: PDF
Driver or library
LP5523SW-LINUX — Linux Driver for LP5523
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
(...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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 (...)
Reference designs
TIDA-00757 — Smart Lock Reference Design Enabling 5+ Years Battery Life on 4x AA Batteries
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 (...)
Reference designs
TIDA-01067 — Smart Damper Control Reference Design With Pressure, Humidity, and Temperature Sensing
This reference design is built to enable multiple room comfort control in connected heating, ventilation and air conditioning (HVAC). Sensing temperature, humidity and pressure allows independent monitoring and air-flow adjustment in each zone. This reference design converts a constant air (...)
Reference designs
TIDA-00998 — Energy Harvesting and Fault Indicator Subsystem for Overhead Fault Indicators Reference Design
This reference 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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
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
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.