LP8501 - 多用途 9 输出 LED 驱动器

LP8501是TI德州仪器公司的一款指示灯/RGBW产品，LP8501是多用途 9 输出 LED 驱动器，本站介绍了LP8501的封装应用图解、特点和优点、功能等，并给出了与LP8501相关的TI元器件型号供参考。

LP8501 - 多用途 9 输出 LED 驱动器 - 指示灯/RGBW - LED驱动器 - 德州仪器

产品描述

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).

产品特性

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 <18 mm2

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