Click here to ask about the production status of specific part numbers. MAX25605 6 Switch Sequential LED Controller For Automotive Lighting Systems General Description Benefits and Features The MAX25605 is a six-channel automotive sequential Flexible Dimming Configuration Provides Optimal LED controller. The device implements a sequential turn Performance without a Microcontroller or Software. function or any other sequential light animation without the Simple Resistor Programming for Sequence Timing use of a microcontroller or software. The MAX25605 in- and Direction. tegrates six cascoded low R n-channel MOSFETs Hazard Light Applications DSON suitable for LED lighting applications up to 750mA. Each Sync Pin Allows Sequencing of up to 16 Devices switch supports up to three series LEDs per switch. The Optional Logarithmic LED Fade entire LED string voltage supported is up to 60V. The n- Flexible Configuration Allows the Use of the Same channel MOSFETs are divided into two groups of three, Device in Different Applications allowing a single device to sequence either one or two One, Two, or Three Series LEDs per Switch strings of LEDs. Integrated gate drivers and level shifters Floating Source MOSFETs for the switches are supplied by an internal charge-pump EMI Reduction regulator, supporting buck-boost and boost-to-battery ap- Spread-Spectrum Oscillator plications, in addition to ground-referenced LED driver Slew Rate Control Minimizes LED Current Spikes topologies. Protection Features and Package Improve Reliability Sequencing functionality and timing is programmed by Single-LED Short, Open, and Open-Trace connecting resistors to the A0, A1, A2, and CLK inputs. Detection Programming options include: dimming up/down, short Thermal Shutdown and Fault Flag LED threshold, multi-device sequence position, dimming frequency, and fade duration. The optional logarithmic Automotive Ready fade feature allows for gradually turning the LEDs on or AEC-Q100 Qualified off. The sequence can be disabled by pulling the enable -40C to +125C Operating Temperature Range input low. With EN pulled low, the switches are open and the LED driver current flows through the entire LED string. Ordering Information appears at end of datasheet. Each switch also integrates single-LED fault detection, as- serting a fault flag in case of shorted LEDs, open LEDs, or open wires between the sequencer and the LED string. Additionally, up to 16 devices can be sequenced together through the use of a SYNC input. The MAX25605 operates over the -40C to +125C au- tomotive temperature range and is available in a 20-pin 4mmx4mm side-wettable TQFN and a 20-pin TSSOP package with exposed pad. Applications Sequential Turn Signal Lights Hardware Based Lighting Animation 19-100844 Rev 1 11/20MAX25605 6 Switch Sequential LED Controller For Automotive Lighting Systems Simplified Block Diagram VBAT LED DRIVER CPP CPN DR6 IN DR5 VDD DR4 MAX25605 SRC4 DR3 FLT EN DR2 SYNC CLK DR1 A0 A1 A2 SRC1 GND EP BAT or GND www.maximintegrated.com Maxim Integrated 2