IS31FL3733 1216 DOTS MATRIX LED DRIVER WITH INDIVIDUAL AUTO BREATH FUNCTION December 2018 GENERAL DESCRIPTION FEATURES The IS31FL3733 is a general purpose 1216 LEDs Supply voltage range: 2.7V to 5.5V matrix driver with 1/12 cycle rate. The device can be 16 current source outputs for row control programmed via an I2C compatible interface. Each 12 switch current inputs for column scan control LED can be dimmed individually with 8-bit PWM data Up to 192 LEDs (1216) in dot matrix which allowing 256 steps of linear dimming. Programmable 1216 (64 RGBs) matrix size with IS31FL3733 features 3 Auto Breathing Modes which de-ghost function are noted as ABM-1, ABM-2 and ABM-3. For each 1MHz I2C-compatible interface Auto Breathing Mode, there are 4 timing characters Selectable 3 Auto Breath Modes for each dot which include current rising / holding / falling / off time Auto Breath Loop Features interrupt pin inform and 3 loop characters which include Loop-Beginning / MCU Auto Breath Loop completed Loop-Ending / Loop-Times. Every LED can be Auto Breath offers 128 steps gamma current, configured to be any Auto Breathing Mode or No- interrupt and state look up registers Breathing Mode individually. 256 steps Global Current Setting Additionally each LED open and short state can be Individual on/off control detected, IS31FL3733 store the open or short Individual 256 PWM control steps information in Open-Short Registers. The Open-Short Registers allowing MCU to read out via I2C Individual Auto Breath Mode select compatible interface. Inform MCU whether there are Individual open and short error detect function LEDs open or short and the locations of open or short Cascade for synchronization of chips LEDs. QFN-48 (6mm6mm) and eTQFP-48 packages The IS31FL3733 operates from 2.7V to 5.5V and APPLICATIONS features a very low shutdown and operational current. Hand-held devices for LED display IS31FL3733 is available in QFN-48 (6mm6mm) and Gaming device (Keyboard, Mouse etc.) eTQFP-48 packages. It operates from 2.7V to 5.5V LED in white goods application over the temperature range of -40C to +125C. TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit (1216) Lumissil Microsystems www.lumissil.com 1 Rev. D, 12/17/2018 IS31FL3733 TYPICAL APPLICATION CIRCUIT (CONTINUED) VBattery V IO/MCU *Note 2 20 39 PVCC VIO 22 F/10V 0.47 F 0.1 F 0.47 F 29 PVCC CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 CS9 CS10 CS11 CS12 CS13 CS14 CS15 CS16 0.47 F 0.1 F 37 AVCC 33 CS16 L 38 DVCC 32 SW12 0.47 F 0.1 F CS15 K SW11 V IO/MCU J SW10 100k 2k 2k 17 CS2 I 41 16 SW9 SDA CS1 42 H SCL SW8 IS31FL3733 45 Micro INTB G Controller 46 15 SW7 SDB SW12 47 14 F IICRST SW11 SW6 100k 100k E SW5 D 3 SW4 40 SW2 SYNC 2 C 35 SW1 SW3 R EXT 43 B ADDR1 SW2 REXT 44 5,12 20k ADDR2 PGND A 48 34 SW1 GND AGND 123456 789 10 11 12 13 14 15 16 Figure 2 Typical Application Circuit (RGB) Figure 3 Typical Application Circuit (Eight Parts Synchronization-Work) Note 1: IC should be placed far away from the antenna in order to prevent the EMI. Note 2: Electrolytic/Tantalum Capacitor maybe considered for high current application to avoid audible noise interference. Note 3: The VIO should be 1.8V V V . And it is recommended to be equal to V of the micro controller. For example, if V =1.8V, set IO CC OH OH V =1.8V, if V =3.3V, set V =3.3V. IO OH IO Note 4: One system should contain only one master, all slave parts should be configured as slave mode before the master is configured as master mode. Work as master mode or slave mode specified by Configuration Register (Function Register, address 00h). Master part output master clock, and all the other parts which work as slave input this master clock. Lumissil Microsystems www.lumissil.com 2 Rev. D, 12/17/2018