9 channel RGB / White LED driver with internal program memory and integrated charge Pump - WQFN
Product details
Parameters
Package | Pins | Size
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
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.Technical documentation
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
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.
Software development
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- lp5523
- lp55231
Linux Source Files
The (...)
Design tools & simulation
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
Design files
-
download TIDA-00757 Assembly Drawing.pdf (254KB) -
download TIDA-00757 PCB.pdf (2691KB) -
download TIDA-00757 BOM (Rev. A).pdf (106KB) -
download TIDA-00757 CAD Files (Rev. A).zip (1234KB) -
download TIDA-00757 Gerber (Rev. A).zip (786KB)
Design files
-
download TIDA-00998 BOM.pdf (98KB) -
download TIDA-00998 BOM (CT).pdf (94KB) -
download TIDA-00998 Assembly Drawing.pdf (466KB) -
download TIDA-00998 Assembly Drawing (CT).pdf (184KB) -
download TIDA-00998 PCB.pdf (1252KB) -
download TIDA-00998 PCB (CT).pdf (747KB) -
download TIDA-00998 CAD Files.zip (1561KB) -
download TIDA-00998 CAD Files (CT).zip (1351KB) -
download TIDA-00998 Gerber.zip (2632KB) -
download TIDA-00998 Gerber (CT).zip (988KB)
Design files
-
download TIDA-01067 BOM.pdf (70KB) -
download TIDA-01067 Assembly Drawing.pdf (144KB) -
download TIDA-01067 PCB.pdf (1191KB) -
download TIDA-01067 CAD Files.zip (892KB) -
download TIDA-01067 Gerber.zip (1079KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RTW) | 24 | View options |
Ordering & quality
- 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.
Support & training
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