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LP5521

現行

具內部程序記憶體和整合式充電泵的 3 通道 RGB/白光 LED 驅動器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LP5811 現行 具備 I2C 和自動動畫控制的同步升壓 4 通道 RGBW LED 驅動器 Newer device with sync boost, lower IQ and smaller size

LP5521

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 3 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) 0.0765 Features Analog/PWM mixed dimming, Constant current, Current control, I2C control, Power-save mode, Programmable lighting engines Iq (typ) (mA) 1.5 Shutdown current (ISD) (typ) (µA) 0.2 Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 3 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) 0.0765 Features Analog/PWM mixed dimming, Constant current, Current control, I2C control, Power-save mode, Programmable lighting engines Iq (typ) (mA) 1.5 Shutdown current (ISD) (typ) (µA) 0.2 Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YFQ) 20 3.96 mm² 2.2 x 1.8 VQFN (NJA) 24 20 mm² 5 x 4
  • Adaptive Charge Pump With 1× and 1.5× Gain Provides Up to 95% LED Drive Efficiency
  • Charge Pump with Soft Start and Overcurrent, Short-Circuit Protection
  • Low Input Ripple and EMI
  • Very Small Solution Size, No Inductor or Resistors Required
  • 200-nA Typical Shutdown Current
  • Automatic Power Save Mode
  • I2C-Compatible Interface
  • Independently Programmable Constant Current Outputs with 8-Bit Current Setting and 8-Bit PWM Control
  • Typical LED Output Saturation Voltage 50 mV and Current Matching 1%
  • Three Program Execution Engines with Flexible Instruction Set
  • Autonomous Operation Without External Control
  • Large SRAM Program Memory
  • Two General Purpose Digital Outputs
  • Adaptive Charge Pump With 1× and 1.5× Gain Provides Up to 95% LED Drive Efficiency
  • Charge Pump with Soft Start and Overcurrent, Short-Circuit Protection
  • Low Input Ripple and EMI
  • Very Small Solution Size, No Inductor or Resistors Required
  • 200-nA Typical Shutdown Current
  • Automatic Power Save Mode
  • I2C-Compatible Interface
  • Independently Programmable Constant Current Outputs with 8-Bit Current Setting and 8-Bit PWM Control
  • Typical LED Output Saturation Voltage 50 mV and Current Matching 1%
  • Three Program Execution Engines with Flexible Instruction Set
  • Autonomous Operation Without External Control
  • Large SRAM Program Memory
  • Two General Purpose Digital Outputs

The LP5521 is a three-channel LED driver designed to produce variety of lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate autonomously without processor control allowing power savings.

The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.

Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.

The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C-compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.

The LP5521 requires only four small, low-cost ceramic capacitors.

Comprehensive application tools are available, including command compiler for easy LED sequence programming.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP5521 is a three-channel LED driver designed to produce variety of lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate autonomously without processor control allowing power savings.

The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.

Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.

The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C-compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.

The LP5521 requires only four small, low-cost ceramic capacitors.

Comprehensive application tools are available, including command compiler for easy LED sequence programming.

For all available packages, see the orderable addendum at the end of the data sheet.
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技術文件

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類型 標題 日期
* Data sheet LP5521 Three-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump datasheet (Rev. I) PDF | HTML 2016年 11月 4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
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
User guide AN-1632 LP5521TM Evaluation Kit (Rev. E) 2016年 9月 23日
Application note AN-1523 LP5521 Power Efficiency Considerations (Rev. C) 2013年 4月 30日
Application note AN-1562 LP5521 Programming Considerations (Rev. A) 2013年 4月 30日
Application note Color-Management LED Drivers Have a Bright Future 2007年 6月 20日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LP5521TMEV — LP5521 評估套件

The LP5521 is a three channel LED driver designed to produce a variety of lighting effects for mobile devices. A high efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory (...)

使用指南: PDF
TI.com 無法提供
開發板

LP5523EVM — LP5523 可編程 9 輸出 LED 驅動器評估模組

The LP5523 is a fully integrated lighting management unit for producing lighting effects for mobile devices. The LP5523 includes all necessary power management, high-side current sources, temperature compensation, two wire (I2C compatible) control interface and programmable pattern generators. The (...)

TI.com 無法提供
驅動程式或資料庫

LP5521SW-LINUX — 適用於 LP5521 的 Linux 驅動程式

The Linux driver supports the LP5521 Three Channel LED Driver. 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:

  • lp5521

 

Linux Source Files

The (...)

View Options
開發模組 (EVM) 的 GUI

SLAC731 — LP5521EVM GUI

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產品
RGB LED 驅動器
LP5521 — 具內部程序記憶體和整合式充電泵的 3 通道 RGB/白光 LED 驅動器
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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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DSBGA (YFQ) 20 Ultra Librarian
VQFN (NJA) 24 Ultra Librarian
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