EVALUATION KIT AVAILABLE MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection General Description Features The MAX16823 three-channel LED driver operates from 5.5V to 40V Operating Range a 5.5V to 40V input voltage range and delivers up to Adjustable Constant Output Current 100mA per channel to one or more strings of high- (5mA to 100mA and Up to 2A with External BJT) brightness LEDs (HB LEDs). Each channels current is 5% Output Current Accuracy programmable using an external current-sense resistor Open LED Detection in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to Three Independent High-Voltage DIM Inputs providing the on and off control of the outputs. Wave- Three Integrated Pass Elements with Low Dropout shaping circuitry reduces EMI while providing fast turn-on Voltage (0.7V max) and turn-off times. Undervoltage Lockout The MAX16823 is well suited for automotive Output Short-Circuit Protection applications requiring a high-voltage input and is able to withstand load-dump events up to 45V. On-board pass 3.4V Voltage Regulator with 4mA Capability elements minimize external components while providing Accurate, Low 203mV Current Sense 5% LED current accuracy. Additional features include an Overtemperature Shutdown active-high, open-drain LEDGOOD output for open LED detection, a +3.4V (5%) regulated output with 4mA -40C to +125C Operating Temperature Range output current capability, short-circuit and thermal protections. Ordering Information appears at end of data sheet. The MAX16823 is available in thermally enhanced 5mm x 5mm, 16-pin TQFN-EP and 16-pin TSSOP-EP packages and is specified over the -40C to +125C automotive temperature range. Typical Operating Circuit V IN Applications IN OUT1 Automotive Exterior: Rear Combination Lights C IN IN OUT2 (RCLs), CHMSL IN OUT3 Automotive Interior: RGB Ambient Lighting, Cluster DIM1 Lighting, and LCD Backlighting MAX16823 DIM2 Emergency Vehicle Warning Lights DIM3 REG Navigation and Marine Indicators R LEDGOOD CS1 LEDGOOD Architectural and Industrial Lighting CS2 LGC REG CS3 C C GND LGC REG CS1 CS2 CS3 19-0733 Rev 5 6/17MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Absolute Maximum Ratings IN to GND ..............................................................-0.3V to +45V Continuous Power Dissipation (T = +70C) A OUT1, OUT2, OUT3, DIM1, DIM2, 16-Pin TQFN 5mm x 5mm DIM3 to GND ..........................................-0.3V to (V + 0.3V) (derate 33.3mW/C above +70C) .........................2666mW IN REG, LGC, LEDGOOD to GND ..............................-0.3V to +6V 16-Pin TSSOP (derate 26.1mW/C above +70C) .2088.8mW CS1, CS2, CS3 to GND .......................................-0.3V to +0.5V Operating Temperature Range ......................... -40C to +125C OUT1, OUT2, OUT3 Short Circuited Junction Temperature ......................................................+150C to GND Duration (V + 16V) ........................................ 60min Storage Temperature Range ............................ -65C to +150C IN Maximum Current into Any Pin Lead Temperature (soldering, 10s) .................................+300C (except IN, OUT1, OUT2, OUT3) .................................20mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (V = 12V, C = 0.1F, I = 0, C = 15nF, V = V = V = 3.4V, R = 2.85 from CS to GND, T = T = -40C IN REG REG LGC DIM1 DIM2 DIM3 CS J A to +125C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 5.5 40 V IN V rising 4.4 4.9 5.4 IN Undervoltage Lockout UVLO V V falling 4.0 4.6 5.2 IN Ground Current I I = I = I = 70mA 1.5 3 mA G OUT1 OUT2 OUT3 Guaranteed Output Current I 100 mA OUT LED Current-Sense Accuracy 5mA I 70mA 5 % OUT I = 70mA, 6.5V V 40V 0.3 0.7 OUT IN Dropout Voltage (Note 2) VDO V I = 70mA, 5.5V V 6.5V 0.3 0.8 OUT IN Output Current Slew Rate 8 mA/s Short-Circuit Current V = 0V 180 mA OUT LEDGOOD LEDGOOD Output Logic Low V I = 2mA 0.4 V OL SINK LGC Pullup Resistor 65 100 135 k LGC Input Upper Threshold V 2.53 V UTH LGC Input Lower Threshold V 0.8 V LTH LGC Pulldown Current V > V 20 mA LGC UTH LGC Clock Period C = 15nF 0.77 1.5 2.3 ms LGC DIMMING INPUT (DIM1, DIM2, DIM3) DIM Logic-Input Bias Current I -0.1 +0.1 A DIM DIM Input-Voltage High 2.4 V V IN DIM Input-Voltage Low 0.6 V DIM Frequency 0 3 kHz Maxim Integrated 2 www.maximintegrated.com