LM3549中文资料高功率顺序驱动 LED 驱动器数据手册TI规格书

描述 Description

The LM3549 is a high power LED driver with up to 700mA output current. It has three constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency. LED drivers are designed for sequential drive so only one driver can be enabled at a time. LED driver output current settings can be stored to integrated non-volatile memory which allows stand-alone operation without I2C interface. Non-volatile memory is rewritable so current setting can be changed if needed.The LM3549 has a fault detection feature that can detect several different fault conditions. In case of a fault error flags are set and FAULT output sends interrupt to control logic. Error flags can be read through I2C interface. Total brightness can be controlled with PWM input or with master fader register if I2C interface is used.

特性 Features

• Over-Current Protection
• I2C Compatible Interface
• LED Open and Short Protection and Detection
• NVM Memory for Calibration Data and Standalone Usage without I2C Control
• Integrated buck-boost Converter
• 700 mA Maximum Drive Current
• 24-pin WQFN Package