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LP5521

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具有内部程序存储器和集成电荷泵的 3 通道 RGB/白色 LED 驱动器

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LP5811 正在供货 具有 I2C 和自动动画控制功能的同步升压 4 通道 RGBW LED 驱动器 Newer device with sync boost, lower IQ and smaller size

LP5521

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产品详情

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 (— mm × — mm) VQFN (NJA) 24 20 mm² (5 mm × 4 mm)
  • 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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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LP5521 Three-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump 数据表 (Rev. I) PDF | HTML 2016-11-4
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020-9-21
应用手册 How to Select a RGB LED Driver 2019-8-8
选择指南 电源管理指南 2018 2018-7-31
应用手册 AN-1523 LP5521 Power Efficiency Considerations (Rev. C) 2013-4-30
应用手册 AN-1562 LP5521 Programming Considerations (Rev. A) 2013-4-30
应用手册 AN-1523 LP5521 Power Efficiency Considerations (cn) 2008-4-17
应用手册 具备颜色管理功能的发光二极管驱动器：前景一片璀璨 英语版 2007-6-20

设计与开发

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评估板

LP5521TMEV — LP5521 评估套件

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 (...)

用户指南: PDF
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评估板

LP5523EVM — LP5523 可编程 9 输出 LED 驱动器评估模块

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 (...)

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驱动程序或库

LP5521SW-LINUX — 用于 LP5521 的 Linux 驱动程序

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 (...)

支持的产品和硬件
评估模块 (EVM) 用 GUI

SLAC731 — LP5521EVM GUI

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
DSBGA (YFQ) 20 Ultra Librarian
VQFN (NJA) 24 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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