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)
