ISSI IS32FL3738 6x8点阵LED驱动解决方案

ISSI公司的IS31FL3740是具有1/2周期的通用的6x8点阵LED驱动器,可通过I2C兼容接口进行编程,每个LED可单独通过8位x4 PWM数据进行调光,具有线性调光512步.器件具有3个自动呼吸模式,标识为ABM-1,ABM-2和ABM-3,每个自动呼吸模式有四个计时特性和三个回路特性,而每个LED可单独配置成自动呼吸模式或多或非自动呼吸模式.器件工作电压2.7V-5.5V,工作温度-40℃ 到+125℃,主要用在汽车电子,汽车集群,仪表盘和汽车内饰.本文介绍了IS31FL3740主要特性,框图,典型应用电路,以及评估板主要特性,电路图,材料清单和PCB元件配置图与设计图.
The IS32FL3738 is a general purpose 6×8 LEDs matrix driver with 1/12 cycle rate. The device can be programmed via an I2C compatible interface. Each LED can be dimmed individually with 8-bit × 4 PWM data which allowing 512 steps of linear dimming.
IS32FL3738 features 3 Auto Breathing Modes which are noted as ABM-1, ABM-2 and ABM-3. For each Auto Breathing Mode, there are 4 timing characters which include current rising / holding / falling / off time and 3 loop characters which include Loop-Beginning /Loop-Ending / Loop-Times. Every LED can be configured to be any Auto Breathing Mode or No- Breathing Mode individually.
Additionally each LED open and short state can be detected, IS32FL3738 store the open or short information in Open-Short Registers. The Open-Short Registers allowing MCU to read out via I2C compatible interface. Inform MCU whether there are LEDs open or short and the locations of open or short LEDs.
The IS32FL3738 operates from 2.7V to 5.5V and features a very low shutdown and operational current. IS32FL3738 is available in eTSSOP-28 package. It operates from 2.7V to 5.5V over the temperature range of -40℃ to +125℃.
IS32FL3738主要特性:
· Supply voltage range: 2.7V to 5.5V
· 8 current source outputs for row control
· 6 switch current inputs for column scan control
· Up to 48 LEDs (6×8) in dot matrix
· Programmable 6×8 (16...