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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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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.

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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

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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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隨著越來越多的建築物和住宅車主希望將智慧鎖（或電子鎖）改裝到大樓或住家，無線電池供電的智慧鎖在現今市場中也越來越受歡迎。  在智慧鎖應用中，高電流馬達和無線電通常會快速耗盡電池電力，造成電池續航力受損。  更換多個電池是一個耗時且昂貴的問題，因此降低平均耗電量通常是重要的設計考量。
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電路圖: PDF
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WQFN (RTW) 24 Ultra Librarian
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