The LP5523 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 LP5523 maintains excellent efficiency over a wide operating range by autonomously selecting the best charge-pump gain based on LED forward voltage requirements. The LP5523 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typical).

The LP5523 has an I²C-compatible control interface with four pin selectable addresses. The device has a flexible general purpose output (GPO), which can be used as a digital control pin for other devices. 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 LP5523 devices.

The device requires only four small, low-cost ceramic capacitors. The LP5523 is available in a tiny 25-pin DSBGA package (0.4-mm pitch).

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

• Three Independent Program Execution Engines, Nine 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 and 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

• 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)
• 0.225
• 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

LP5523的完整型号有：LP5523TM/NOPB、LP5523TMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LP5523TM/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LP5523TM/NOPB的批量USD价格：0.814（1000+）

LP5523TMX/NOPB，工作温度：-30 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LP5523TMX/NOPB的批量USD价格：0.678（1000+）

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 (...)

LP5523SW-LINUX — 用于 LP5523 的 Linux 驱动程序

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

(...)

LP5523 Evaluation Software (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

TIDA-050013 — 适用于电池供电应用的超小型 RGB LED 动画解决方案参考设计

此参考设计是一款适用于电池供电应用的 2cm x 2cm RGB LED 动画解决方案，采用了 LP5523 和 MSP430FR2111 器件。LP5523 器件是一款具有可编程控制引擎的 LED 驱动器，采用了 DSBGA 封装。LP5523 可以为必须适合极小 PCB 的应用提供逼真的照明图案。该设计在使用有限 MCU 资源的同时展示了完整的功能。