IS31FL3741A
IS31FL3741A is 39x9 DOTS MATRIX LED DRIVER manufactured by Lumissil.
DESCRIPTION
The IS31FL3741A is a general purpose 39×9 LED Matrix programmed via an I2C patible interface. Each LED can be dimmed individually with 8-bit PWM data and 8-bit scaling data which allowing 256 steps of linear PWM dimming and 256 steps of DC current adjustable level. Additionally each LED open and short state can be detected, IS31FL3741A store the open or short information in Open-Short Registers. The Open-Short Registers allowing MCU to read out via I2C patible interface. Inform MCU whether there are LEDs open or short and the locations of open or short LEDs. The IS31FL3741A operates from 2.7V to 5.5V and features a very low shutdown and operational current. IS31FL3741A is available in QFN-60 (7mm×7mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.
TYPICAL APPLICATION CIRCUIT
March 2020
FEATURES
- Supply voltage range: 2.7V ~ 5.5V
- 39 Current Sink × 9 SW matrix size: drive up to
351 LEDs or 117 RGBs
- Individual 256 PWM control steps
- Individual 256 DC current steps
- Global 255 current setting
- SDB rising edge reset I2C module
- Programmable H/L logic: 1.4V/0.4V, 2.4V/0.6V
- 29k Hz/3.6k Hz/1.8k Hz/900Hz PWM frequency
- 1MHz I2C-patible interface
- interrupt and state lookup registers
- Individual open and short error detect function
- De-ghost
- QFN-60 (7mm×7mm) package
APPLICATIONS
- Hand-held devices for LED display
- Gaming device (Keyboard, Mouse etc.)
- LED in white goods application
- Music box
Figure 1 Typical Application Circuit (Single Color: 39×9)
Lumissil Microsystems
- .lumissil.
Rev. C, 03/16/2020
TYPICAL APPLICATION CIRCUIT (CONTINUED)
5V
1μF 0.1μF 1μF 0.1μF 1μF 0.1μF
15 PVCC
25 PVCC
14 AVCC
VIO/MCU
24 SW9
23 SW8
17 SW2
16...
