IS31FL3733 Datasheet, PDF (1/30 Pages) Integrated Silicon Solution, Inc – 12×16 DOTS MATRIX LED DRIVER WITH INDIVIDUAL AUTO BREATH FUNCTION

IS31FL3733
12×16 DOTS MATRIX LED DRIVER
WITH INDIVIDUAL AUTO BREATH FUNCTION
July 2016
GENERAL DESCRIPTION
FEATURES
The IS31FL3733 is a general purpose 12×16 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 PWM data
which allowing 256 steps of linear dimming.
IS31FL3733 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, IS31FL3733 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 IS31FL3733 operates from 2.7V to 5.5V and
features a very low shutdown and operational current.
IS31FL3733 is available in QFN-48 (6mm×6mm) and
eTQFP-48 packages. It operates from 2.7V to 5.5V
over the temperature range of -40°C to +125°C.
 Supply voltage range: 2.7V to 5.5V
 16 current source outputs for row control
 12 switch current inputs for column scan control
 Up to 192 LEDs (12×16) in dot matrix
 Programmable 12×16 (64 RGBs) matrix size with
de-ghost function
 1MHz I2C-compatible interface
 Selectable 3 Auto Breath Modes for each dot
 Auto Breath Loop Features interrupt pin inform
MCU Auto Breath Loop completed
 Auto Breath offers 128 steps gamma current,
interrupt and state look up registers
 256 steps Global Current Setting
 Individual on/off control
 Individual 256 PWM control steps
 Individual Auto Breath Mode select
 Individual open and short error detect function
 Cascade for synchronization of chips
 QFN-48 (6mm×6mm) and eTQFP-48 packages
APPLICATIONS
 Mobile phones and other hand-held devices for
LED display
 Gaming device (Keyboard, Mouse etc.)
 LED in white goods application
TYPICAL APPLICATION CIRCUIT
VBattery
*Note2
22μF/10V
0.47μF 0.1μF
20
PVCC
29
PVCC
0.47μF 0.1μF
37,38
AVCC/DVCC
0.47μF 0.1μF
VIO/MCU
39
VIO
0.47μF
33
CS16
32
CS15
SW12
SW11
VIO/MCU
100kΩ 4.7kΩ 4.7kΩ
Micro
Controller
100kΩ 100kΩ
17
CS2
16
CS1
41
42 ^{SDA IS31FL3733}
SCL
45
15
INTB
SW12
46
14
SDB
SW11
47
IICRST
SW10
SW9
SW8
SW7
SW6
SW5
REXT
20kΩ
40
SYNC
35
RSET
43
ADDR1
44
ADDR2
48
GND
3
SW2
2
SW1
5,12
PGND
34
AGND
SW4
SW3
SW2
SW1
CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 CS9 CS10 CS11 CS12 CS13 CS14 CS15 CS16
L
K
J
I
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Figure 1 Typical Application Circuit (12×16)
Note 1: For the mobile applications the IC should be placed far away from the mobile antenna in order to prevent the EMI.
Note 2: Electrolytic/Tantalum Capacitor may considerable for high current application to avoid audible noise interference.
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. A, 07/01/2016