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LP55231

ACTIVE

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

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Data sheet

LP55231

ACTIVE
Data sheet Order now

Product details

Number of 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 Operating temperature range (C) -30 to 85 Rating Catalog
Number of 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 Operating temperature range (C) -30 to 85 Rating Catalog
WQFN (RTW) 24 16 mm² 4 x 4
  • 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
  • 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.

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
* 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 18 Oct 2017
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
EVM User's guide LP55231EVM User's Guide (Rev. B) 11 Dec 2015
Technical article Enhancing your Internet-connected home device 24 Apr 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
Not available on TI.com
GUI for evaluation module (EVM)

LP55231 Software

SNVC132.ZIP (993 KB)
Download
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 (...)
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Package Pins Download
WQFN (RTW) 24 View options

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