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MAX16836：High-Voltage, 350mA, High-Brightness LED Driver with PWM Dimming and 5V Regulator

350mA LED Driver Provides 3.5% Current Accuracy for Long LED Strings and PWM Dimming

The MAX16836 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 (HB LEDs). The output current of the MAX16836 is adjusted by using an external current-sense resistor in series with the LEDs. A dimming input allows wide-range "pulsed" PWM operation. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16836 is well suited for applications requiring a high-voltage input and is able to withstand automotive load-dump events up to 40V. An on-board pass element minimizes external components while providing ±3.5% output-current accuracy. Additional features include a 5V regulated output and short-circuit and thermal protection. The MAX16836 is available in a thermally enhanced, 5mm x 5mm, 16-pin TQFN package and in an 8-pin SO package with exposed pad. The MAX16836 is specified over the automotive -40°C to +125°C temperature range.

Key Features +6.5V to +40V Operating Range Adjustable LED Current (35mA to 350mA) ±3.5% LED Current Accuracy High-Voltage DIM Pin for Dimming Interface Integrated Pass Element with Low-Dropout Voltage (0.55V typ) +5V Regulated Output with 4mA Source Capability Parallel Operation for LED Current > 350mA Differential LED Current Sense Low Shutdown Supply Current (35µA typ) Low 200mV Current-Sense Reference Reduces Power Losses Wave-Shaped Edges Reduce Radiated EMI During PWM Dimming Thermal Shutdown Output Short-Circuit Protection Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package and in 8-Pin SO with Exposed Pad Package -40°C to +125°C Operating Temperature Range

MAX16836: Typical Operating Circuit Applications/Uses Automotive Interior: Map, Courtesy, and Cluster Lighting Automotive Exterior: Tail Lights and CHMSL Emergency Vehicle Warning Lights Navigation and Marine Indicators General Lighting Signage, Gasoline Canopies, Beacons

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Design kits & evaluation modules

• MAX16836EVKIT

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