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.
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