LP8501中文资料多功能 9 输出 LED 驱动器数据手册TI规格书

描述 Description

The LP8501 is an LED driver with 9 outputs, designed to produce versatile lighting effects for mobile devices. The device is equipped with an internal program memory, which allows operation without processor control. Internal program memory is used by three independent program execution engines to produce user-defined lighting effects for the outputs. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The excellent efficiency over a wide operating range is achieved by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The LP8501 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typ.) The device has a flexible General Purpose Output (GPO) (which can be used, for example, as a digital control pin for other devices), an INT pin (interrupt function), which can be used to notify the processor, and a Trigger input interface, which allows program execution start without I2C write. The device requires only four small and low-cost ceramic capacitors. The LP8501 is available in a tiny 25-bump 2.26 mm x 2.26 mm x 0.60 mm DSBGA package (0.4 mm pitch).

特性 Features

• Three Independent Program Execution Engines for User-defined Programs with Large SRAM Memory for Storing Lighting Programs
• 9 Programmable Source (High Side) Driver Outputs with 25.5 mA Full-Scale Current, 8-bit Current Setting Resolution and 12-Bit PWM Control Resolution
• Flexible Grouping Possibility for All 9 Outputs Including GPO into Three Groups with Group PWM and Fade-In/ Fade-Out Controls
• Built-in LED Test
• Adaptive Charge Pump with 1x and 1.5x Gain Provides up to 95% LED Drive Efficiency, with Soft Start and Overcurrent/Short Circuit Protection
• Automatic Power Save Mode; IVDD = 10 µA (typ.)
• Two Wire, I2C-Compatible, Control Interface
• Small Application Circuit
• Pin-configured LED Powering for LEDs 1 to 6 and for LEDs 7 to 9
• Solution Area 2

简介

LP8501属于开发板套件编程器的评估板-LED驱动器。由TI制造生产的LP8501评估板 - LED 驱动器LED 驱动器评估板是带有元器件的电路板，用于提供特定电路或器件的工作实例。该系列评估板提供一个 LED 驱动器实例，用于可调节闪烁、模拟亮度、背光、双极开关、升压转换器、亮度控制、相机闪光灯、可调光、恒流和 RGB 控制，以及更多其他应用。