IS31FL3745数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The IS31FL3745 is a general purpose 18×n (n=1~8) LED Matrix programmed via 1MHz I2C compatible interface. Each LED can be dimmed individually with 8-bit PWM data and 8-bit DC scaling data which allowing 256 steps of linear PWM dimming and 256 steps of DC current adjustable level.

Additionally each LED open and short state can be detected, IS31FL3745 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 IS31FL3745 operates from 2.7V to 5.5V and features a very low shutdown and operational current.

IS31FL3745 is available in WLCSP-36 (2.93mm×2.93mm, 0.5mm ball pitch, 0.25mm ball diameter) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.

特性 Features

• Supply voltage range: 2.7V to 5.5V
• 18 Current sink (Maximum)
• Support 18 × n (n=1~8) LED matrix configurations
• Individual 256 PWM control steps
• Individual 256 DC current steps
• Global 256 current setting
• SDB rising edge reset I2C module
• Programmable H/L logic:1.4/0.4, 2.4/0.6
• 29kHz PWM frequency
• 1MHz I2C-compatible interface
• State lookup registers
• Individual open and short error detect function
• 180 degree phase delay operation to reduce power noise
• De-Ghost
• Cascade for synchronization of chips
• WLCSP-36 (2.93mm×2.93mm, 0.5mm ball pitch, 0.25mm ball diameter) package

应用 Application

• AI-speakers and smart home devices
• LED display for hand-held devices

简介

IS31FL3745属于集成电路（IC）的LED驱动器。由制造生产的IS31FL3745LED 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。