1216 MATRIX LED DRIVER DESCRIPTION RECOMMENDED EQUIPMENT The IS31FL3733 is a general purpose 1216 LEDs 5.0V, 2A power supply matrix driver with 1/12 cycle rate. The device can be programmed via an I2C compatible interface. Each ABSOLUTE MAXIMUM RATINGS LED can be dimmed individually with 8-bit PWM data which allowing 256 steps of linear dimming. 5.5V power supply IS31FL3733 features 3 Auto Breathing Modes which Caution: Do not exceed the conditions listed above, otherwise are noted as ABM-1, ABM-2 and ABM-3. For each the board will be damaged. Auto Breathing Mode, there are 4 timing characters which include current rising / holding / falling / off time PROCEDURE and 3 loop characters which include Loop-Beginning / Loop-Ending / Loop-Times. Every LED can be The IS31FL3733 evaluation board is fully assembled configured to be any Auto Breathing Mode or PWM and tested. Follow the steps listed below to verify mode individually. board operation. Caution: Do not turn on the power supply until all connections FEATURES are completed. 1) Short J3 to connect 3VO and VIO. Supply voltage range from 2.7V to 5.5V 2) Short J4 to connect PVCC and U1VCC. Programmable 1216 (64 RGBs) matrix size with 3) Connect the 5VDC power to the connector de-ghost function (J1&J2). 3 Auto Breath Modes and PWM Mode 4) Turn on the power supply/Plug in the Micro USB Auto breath offers 128 steps gamma current, Pay attention to the supply current. If the current interrupt and state look up registers exceeds 1A, please check for circuit fault. 256 steps global current setting Individual PWM control 256 steps Individual open and short error detect function QFN-48 (6mm6mm) and eTQFP-48 packages QUICK START Figure 1: Photo of IS31FL3733 Evaluation Board ORDERING INFORMATION Part No. Temperature Range Package IS31FL3733-QFLS4-EB -40C to +125C (Industrial) QFN-48, Lead-free Table 1: Ordering Information For pricing, delivery, and ordering information, please contacts Lumissils analog marketing team at analog Lumissil.com or (408) 969-6600. Lumissil Microsystems www.lumissil.com 1 Rev. B, 01/20/2017 1216 MATRIX LED DRIVER EVALUATION BOARD OPERATION The board comes with J4 default setting closed (short). If it is set to open, the user can connect an The IS31FL3733 evaluation board has three external VIO voltage supply, the external VIO voltage animation display modes. Press K1 to switch is recommended to equal to ex-IICs high logic. configurations. Follow the steps listed below for external control. Firework animation 1) Heart animation 2) 1) Open J4 to disconnect the power of U1, disable Angle shift animation 3) the 3V0 (3.0V). All led turn on 2) Open J3 to disconnect the VIO to 3V0, and 4) connect an external MCU VCC to VIO. Note: IS31FL3733 solely controls the FxLED function on the evaluation board. 3) Pull-up the SDB to VIO. 4) Connect the 5VDC power to the connector (J1&J2). SOFTWARE CONTROL 5) Turn on the power supply/Plug in the Micro USB J4 default setting is closed (short). If it is set to open, Pay attention to the supply current. If the current the U1 (LDO) will stop working and all the 3V, including exceeds 1A, please check for circuit fault. the supply of MCU will be cut off, all the MCU s IO will 6) Start external IIC control. be high impedance (open-drain) and external control is Caution: If J4 is closed (shorted), user cant connect the users allowed. MCU VCC to VIO directly, otherwise the users MCU (maybe 1.8V) will connect to evaluation bards VIO (3.0V) and maybe The IS31FL3733 can set its I2C bus interface logic damaged. threshold based on the voltage on the VIO pin. An Please refer to the datasheet to get more information about external VIO voltage in the range of 1.8VV V IO CC IS31FL3733. can be applied after removing (open) the J4 jumper. Lumissil Microsystems www.lumissil.com 2 Rev. B, 01/20/2017