IS31FL3238数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

IS31FL3238 is an LED driver with 18 constant current channels. Each channel can be pulse width modulated (PWM) by 16 bits for smooth LED brightness control. In addition, each channel has an 8-bit output current control register which allows fine tuning the current for rich RGB color mixing, e.g., a pure white color LED application. The maximum output current of each channel is designed to be 78mA, which can be adjusted by one 8-bit global control register. Proprietary programmable algorithms are used in IS31FL3238 to minimize audible noise caused by the MLCC decoupling capacitor. All registers can be programmed via a high speed I2C (1MHz).

IS31FL3238 can be turned off with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature.

IS31FL3238 is available in QFN-28 (5mm×5mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.

特性 Features

• 2.7V to 5.5V VCC supply
• 1MHz I2C interface, automatic address increment function with readout function
• Four selectable I2C addresses
• Accurate color rendition ▪ Selectable 16-bit PWM 256/1024/4096/65536 ▪ 8-bit dot correction ▪ 8-bit global current adjust
• Open/Short detect function
• 62kHz PWM frequency (8-bit PWM)
• Temperature detect function
• EMI/noise reduction technology ▪ Spread spectrum ▪ Selectable 6 phase delay ▪ 180 degree phase delay
• -40°C to +125°C temperature range
• QFN-28 (5mm×5mm) package

应用 Application

• AI-speakers and smart home devices
• Hand-held devices for LED display
• LED in home appliances

简介

IS31FL3238属于集成电路（IC）的LED驱动器。由制造生产的IS31FL3238LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。