General Description
●The LM3421/23 are versatile high voltage N-channel MosFET controllers for LED drivers . They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75V, makes the LM3421/23 ideal for illuminating LEDs in a large family of applications.
●Features
●■ LM3421Q1/LM3423Q1 are Automotive Grade products that are AEC-Q100 grade 1 qualified (-40°C to +125°C operating junction temperature) and similarly LM3421Q0/ LM3423Q0 are AEC-Q100 grade 0 qualified (-40°C to+150°C operating junction temperature)
●■ VIN range from 4.5V to 75V
●■ High-side adjustable current sense
●■ 2Ω, 1A Peak MosFET gate driver
●■ Input under-voltage and output over-voltage protection
●■ PWM and analog dimming
●■ Cycle-by-cycle current limit
●■ Programmable switching frequency
●■ "Zero current" shutdown and thermal shutdown
●■ LED output status flag (LM3423/23Q1/23Q0 only)
●■ Fault status flag and timer (LM3423/23Q1/23Q0 only)
