Overview
The IS32FL3740 is a general purpose 3×4 LEDs
matrix driver with 1/12 cycle rate. The device can be
programmed via an I2C compatible interface. Each
LED can be dimmed individually with 8-bit × 8 PWM
data which allowing 1024 steps of linear dimming.
IS32FL3740 features 3 Auto Breathing Modes which
are noted as ABM-1, ABM-2 and ABM-3. For each
Auto Breathing Mode, there are 4 timing characters
which include current rising / holding / falling / off time
and 3 loop characters which include Loop-Beginning /
Loop-Ending / Loop-Times. Every LED can be
configured to be any Auto Breathing Mode or No-
Breathing Mode individually.
Additionally each LED open and short state can be
detected, IS32FL3740 store the open or short
information in Open-Short Registers. The Open-Short
Registers allowing MCU to read out via I2C
compatible interface. Inform MCU whether there are
LEDs open or short and the locations of open or short
LEDs.
The IS32FL3740 operates from 2.7V to 5.5V and
features a very low shutdown and operational current.
IS32FL3740 is available in eTSSOP-20 package. It
operates from 2.7V to 5.5V over the temperature
range of -40°C to +125°C.