General Description

The MAX16823 three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of highbrightness LEDs (HB LEDs). Each channel’s current is programmable using an external current-sense resistor in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. Wave-shaping circuitry reduces EMI while providing fast turn-on and turn-off times.

Features

● 5.5V to 40V Operating Range

● Adjustable Constant Output Current (5mA to 100mA and Up to 2A with External BJT)

● ±5 Output Current Accuracy

● Open LED Detection

● Three Independent High-Voltage DIM Inputs

● Three Integrated Pass Elements with Low Dropout Voltage (0.7V max)

● Undervoltage Lockout

● Output Short-Circuit Protection

● 3.4V Voltage Regulator with 4mA Capability

● Accurate, Low 203mV Current Sense

● Overtemperature Shutdown

● -40°C to +125°C Operating Temperature Range

Applications

● Automotive Exterior: Rear Combination Lights (RCLs), CHMSL

● Automotive Interior: RGB Ambient Lighting, Cluster Lighting, and LCD Backlighting

● Emergency Vehicle Warning Lights

● Navigation and Marine Indicators

● Architectural and Industrial Lighting