LM3421-SEPICEV/NOPB Datasheet PDF - TI

This application note describes an evaluation board consisting of the LM3421 controller configured as a SEPIC constant current LED driver. It is capable of converting input voltages from 8V to 18V and illuminating up to six LEDs with approximately 350 mA of drive current.

●Additional features include analog and pulse-width modulated (PWM) dimming, over-voltage protection, under-voltage lockout and cycle-by-cycle current limit. A bill of materials is included that describes the parts used in this evaluation board. A schematic and layout have also been included along with measured performance characteristics.