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[原创] ISSI IS32FL3738 6x8点阵LED驱动解决方案

关键词:LED驱动器 点阵LED PWM 汽车电子 仪表盘

时间:2018-10-11 10:31:40       来源:中电网

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..

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