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LP55231

現行

具內部程序記憶體和整合式充電泵的 9 通道 RGB/白光 LED 驅動器 - WQFN

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產品規格表

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LP5813 現行 具備 I2C 和自動動畫控制的 4 x 3 矩陣 RGB LED 驅動器 Newer device with sync boost, lower IQ and smaller size

LP55231

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 9 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Topology Charge pump 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 (ISD) (typ) (µA) 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 Topology Charge pump 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 (ISD) (typ) (µA) 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.

filter 尋找其它 RGB LED 驅動器
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檢視所有 5
類型 標題 日期
* Data sheet LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN datasheet (Rev. D) PDF | HTML 2016年 12月 29日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Application note How to Select a RGB LED Driver 2019年 8月 8日
Technical article How energy harvesting can extend the life of your fault indicator on the grid PDF | HTML 2017年 10月 18日
EVM User's guide LP55231EVM User's Guide (Rev. B) 2015年 12月 11日

設計與開發

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開發板

LP55231SQEVM — 可編程的 9 輸出 LED 驅動器評估模組板

Programmable 9-Output LED Driver Evaluation Module Board

The LP55231EVM demonstrates the flexibility and programability of LP55231 for dimming and sequencing control of LEDs.
使用指南: PDF
TI.com 無法提供
驅動程式或資料庫

LP5523SW-LINUX — 適用於 LP5523 的 Linux 驅動程式

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

(...)

View Options
開發模組 (EVM) 的 GUI

SNVC132 — LP55231 Software

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產品
RGB LED 驅動器
LP55231 — 具內部程序記憶體和整合式充電泵的 9 通道 RGB/白光 LED 驅動器 - WQFN
硬體開發
開發板
LP55231SQEVM — 可編程的 9 輸出 LED 驅動器評估模組板
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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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參考設計

TIDA-00757 — 使用 4 節 AA 電池並可實現 5 年以上電池壽命的智慧鎖參考設計

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 (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01067 — 具有壓力、濕度和溫度感測功能的智慧阻尼器控制參考設計

此參考設計旨在透過連線暖氣、通風與空調 (HVAC)，對多個房間的舒適性進行控制。藉由感測溫度、濕度及壓力，即可在每個區域中進行獨立監控與氣流調整。此參考設計可將定風量 (CAV) 轉換為變風量 (VAV) 系統。收集到的資料可透過無線方式傳輸至智慧型恆溫器或閘道。可採用板載感測器進行預測性維護、縮短技術故障排除時間，並減少整體能源消耗。長久的電池續航力讓智慧阻尼器能持續運作多年，無需花費時間與金錢更換電池。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00998 — 適用於高架故障指示燈的能源採集和故障指示燈子系統參考設計

此參考設計展示了使用輔助電池或超級電容器，並從電流變壓器 (CT) 或太陽能電池收集能源以延長主要電池壽命的多種架構。最佳電源管理是利用有效率的 LED 驅動器來驅動 LED 串聯或並聯串，以控制強度實現一致的 360° 可見度。
Design guide: PDF
電路圖: PDF
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WQFN (RTW) 24 Ultra Librarian
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