General Description
●The MAX16800 current regulator operates from a 6.5V to 40V input voltage range and delivers up to a total of
●350mA to one or more strings of high-brightness LEDs. The output current of the MAX16800 is adjusted by
●using an external current-sense resistor in series with the LEDs. An enable input allows wide-range “pulsed” dimming. Wave-shaping circuitry reduces EMI.
●Features
●+6.5V to +40V Operating Range
●Adjustable Level (35mA to 350mA)
●±3.5% Output Current Accuracy
●Integrated Pass Element with Low-Dropout Voltage (0.5V typ)
●Output Short-Circuit Protection
●+5V Regulated Output with 4mA Source Capability
●Thermal Shutdown
●Differential LED Current Sense
●High-Voltage Enable Pin for Dimming Interface
●Low Shutdown Supply Current (12μA typ)
●Low 204mV Current-Sense Reference Reduces Power Losses
●Wave-Shaped Soft Edges Reduce Radiated EMI During PWM Dimming
●Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package
●-40°C to +125°C Operating Temperature Range
●Applications
●Automotive Interior: Map, Courtesy, and Cluster Lighting
●Automotive Exterior: Tail Lights and CHMSL
●Warning Lights for Emergency Vehicles
●Navigation and Marine Indicators
●General Illumination
●Signage, Gasoline Canopies, Beacons
