MAX25606ATP/VY+

Click here to ask about the production status of specific part numbers. MAX25606 6-Switch Matrix Manager for Automotive Lighting General Description Benefits and Features The MAX25606 6-switch matrix manager IC for automo- Automotive Ready: AEC-Q100 Qualified tive lighting applications includes a 6-switch array for by- Six-Switch Matrix Manager Allows for Flexible passing individual LEDs in a single- or dual-string applica- Configuration tion. It features six individually controlled n-channel MOS- Single and Dual-String Configurations FET switches with each switch having an on-resistance of Up to 6 Switches in Series for Single String 0.2 and rated to withstand 16V. A single current source Up to 3 Switches in Series in Dual-String can be used to power all the LEDs connected in series. In- Up to 3 LEDs per Switch dividual LEDs can be dimmed by turning on and off the by- Robust Serial Interface pass switches across each LED. The device can also be Multidrop UART Communication Interface configured in two string applications with three switches Up to 64 Addressable Devices in series per string. Each switch can be connected across Compatible with CAN Physical Layer one, two, or three LEDs in series. It also allows for parallel Optimal PWM Dimming Arrangement Provides connection of two switches to bypass high-current LEDs. Excellent Dimming Performance The IC also includes an internal charge pump that pro- Programmable 12-Bit PWM Dimming vides power for the gate drive for the LED bypass switch- Fade Transition Between PWM Dimming States es. Internal Clock Generator or External Clock for PWM The IC features a universal asynchronous receiver-trans- Dimming mitter (UART) communication interface. Each switch can EMI Mitigation be turned on, turned off, or PWM modulated with 12 bits of Programmable Slew Rate for EMI Control PWM duty cycle adjustment. Transitions between two dif- Integrated Spread Spectrum Frequency Dithering ferent PWM settings can either happen instantly or a loga- rithmic fade transition can be applied. The logarithmic fade Protection Features and Package Improve Reliability algorithm is built into the device and only requires a single Open-LED Protection software command. The IC features open-LED protection Programmable Open and Short-LED Threshold as well as open and short LED fault reporting through the Open and Shorted-LED Fault Reporting serial interface. The device is available in a 20-pin 4x4mm Open Trace Fault Reporting side wettable TQFN and a 20-pin thin shrink small-outline Thermally Enhanced 20-Pin Side Wettable TQFN package (TSSOP) with exposed pad. The device is AEC- and 20-Pin TSSOP with Exposed Pad Q100 grade 1 qualified and designed to operate over the full -40C to +125C temperature range. Ordering Information appears at end of datasheet. Applications Automotive Matrix LED Systems and Adaptive Drive Beam Lights Simplified Block Diagram VBAT LED DRIVER DR6 DR5 DR4 SRC4 DR3 DR2 DR1 SRC1 CLK EP MAX25606 FLT GND MCU V DD RX TX V RX TX IN DD CPP CPN A0 A1 A2 V BAT CAN CAN 19-100947 Rev 0 6/21MAX25606 6-Switch Matrix Manager for Automotive Lighting TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified Block Diagram . 1 Absolute Maximum Ratings 5 Package Information . 5 20 TQFN-EP* (SW) . 5 20 TSSOP-EP* . 5 Electrical Characteristics . 6 Pin Configurations . 8 TQFN 8 TSSOP . 8 Pin Description . 8 Functional Diagrams 10 MAX25606 Block Diagram . 10 Detailed Description 11 Power-On Reset and VDD UVLO . 11 Internal Switches 11 Charge Pump . 11 Programming Options 12 MAX25606 Pin Resistor Decode Table . 12 Resistor Programming Table . 12 PWM Clock and Synchronous Operation with Multiple Devices 13 Parallel Operation for Higher Current Applications 13 PWM Dimming 13 Dimming With and Without Fade 14 LED Fault Detection and Protection 15 LED Short Threshold . 15 UART Serial Interface 15 Overview 15 Device Connections . 15 UART Frame Format . 15 Synchronization and Acknowledge Frames . 16 Device ID and Address Frame Format . 16 Write Transactions 17 CRC Error Checking . 17 UART Watchdog Function . 17 UART Communication Error Handling . 18 Thermal Protection . 18 www.maximintegrated.com Maxim Integrated 2