MAX25606EVSYS# Analog Devices

Click here to ask about the production status of specific part numbers. Evaluates: MAX25606 MAX25606 Evaluation System General Description Features The MAX25606 evaluation System (EV system) provides Two, Six-Channel Matrix Managers a proven design to evaluate the MAX25606 six-channel 12 On-Board White LEDs LED matrix manager. The EV system includes two MAX25601 Boost-Buck LED Driver instances of the MAX25606 controlling twelve on-board LEDs connected in a series configuration. The MAX25601 MAX32625PICO Provides UART Communication to Control the Matrix Managers Boost-buck LED driver is also included to drive the LEDs. GUI for Easy Evaluation Ordering Information appears at end of data sheet. MAX25606 Evaluation System Board Photo 319-100764 Rev 0 5/21MAX25606 Evaluation System Evaluates: MAX25606 5) Connect the MAX32625PICO to the computer with Quick Start the included USB cable. Required Equipment 6) If the GUI is not installed, Install the GUI MAX25606 evaluation system 7) Run the GUI MAX32625PICO (included) A Windows 10 computer with GUI installed Detailed Description A 12V, 3A power supply The MAX25606 evaluation System provides a proven design to evaluate the MAX25606 six-channel LED matrix Procedure manager. The EV system includes two instances of the The EV system is fully assembled and tested. Follow the MAX25606 controlling twelve on-board LEDs connected steps below to verify board operation. Caution: Do not in a series configuration. the MAX25601 Boost-buck LED turn on the power supply until all connections are driver is also included to drive the LEDs. made. Additional caution should be taken the on- Analog Dimming Control (ICTRL) board LEDs are very bright when illuminated. When a shunt is installed across pins 2-3 of J2, the LED 1) Connect the positive terminal of the +12V power current is set by the R1/R2 resistor divider. The LED cur- supply to the BAT VIN pad rent is linearly proportional to the voltage on the ICTRL 2) Connect the positive terminal of the +12V power input. An ICTRL voltage of 200mV or less corresponds to supply to the IN test point I = 0A. An ICTRL voltage of 1.3V or more corresponds LED 3) Connect the negative terminal of the +12V power to I = 0.8A. between 200mV and 1.3V, the LED cur- LED supply to the GND test point rent is linearly adjusted between 0A and 0.8A respectively. 4) Connect the MAX32625PICO to the MAX25606EV- To set the LED current with an external reference, remove SYS using the included ribbon cable the shunt installed across J2, and instead apply a voltage across the ICTRL test point and the SGND pad. Table 1. MAX25606 EV System Jumper Descriptions SHUNT JUMPER DESCRIPTION POSITION 1-2* Connects V to the DIM pin. 100% PWM dimming is enabled in this configuration. CC Connects DIM to a voltage-divider from V to ground. When DIM is above 3V, the buck regulator is CC fully on at 100% dim duty cycle. When DIM is between 0.2V and 3V, the buck regulator operates at a 2-3 J1 duty cycle proportional to the DIM voltage, at a frequency of 200Hz. When DIM is below 0.2V, the buck regulator is disabled. Disconnects DIM from the voltage divider. Allows DIM to be driven by an external voltage source or Open PWM signal to drive the DIM pin. 1-2 Connects V to the REFI pin. LED current is at the maximum value of 0.74A in this configuration. CC Connects REFI to a voltage-divider from V to ground. Adjusting R2 allows programming the LED CC 2-3* J2 current from 0 to 0.8A. Disconnects the REFI pin of the device from the external voltage-divider on the V pin. CC open Allows REFI to be driven by an external voltage to set the LED current level. 1-2* Pullup resistor from UART TX to 1.8V V . DD J3 open Pullup resistor to VDD not installed. In this case an external pullup should be added. 1-2* Pullup resistor from UART RX to 1.8V V . DD J4 Open Pullup resistor to VDD not installed. In this case an external pullup should be added. *Default position. Windows is a registered trademark and registered service mark of Microsoft Corporation. Maxim Integrated 2 www.maximintegrated.com