IS31FL3736 Datasheet, PDF (1/28 Pages) Integrated Silicon Solution, Inc – 12×8 DOTS MATRIX LED DRIVER WITH INDIVIDUAL AUTO BREATH FUNCTION

IS31FL3736
12×8 DOTS MATRIX LED DRIVER
WITH INDIVIDUAL AUTO BREATH FUNCTION
GENERAL DESCRIPTION
The IS31FL3736 is a general purpose 12×8 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.
IS31FL3736 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, IS31FL3736 store the open or short
information in LED Open/Short Registers. The LED
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 IS31FL3736 operates from 2.7V to 5.5V and
features a very low shutdown and operational current.
IS31FL3736 is available in QFN-40 (5mm×5mm)
package. It operates from 2.7V to 5.5V over the
temperature range of -40°C to +125°C.
TYPICAL APPLICATION CIRCUIT
FEATURES
August 2016
 Supply voltage range: 2.7V to 5.5V
 8 current source outputs for row control
 12 switch current inputs for column scan control
 Up to 96 LEDs (12×8) in dot matrix
 Programmable12×8 (32 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 Breathoffers 128 steps gamma current,
interrupt and statelookup 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-40 (5mm×5mm) package
APPLICATIONS
 Mobile phones and other hand-held devices for
LED display
 Gaming device (Keyboard, Mouse etc.)
 LED in white goods application
*Note2
VCC_5V
17
PVCC
VIO/MCU
31
VIO
22μF/10V
0.47μF 0.1μF
23
PVCC
0.47uF
0.47μF 0.1μF
0.47μF 0.1μF
27,28 _DVCC
AVCC
25
CS8
24
CS7
SW12
VIO/MCU
SW11
100kΩ 1kΩ 1kΩ
Micro
Controller
100kΩ 100kΩ
16
CS2
33
15
SDA
CS1
34
37 ^{SCL IS31FL3736}
INTB
38
14
SDB
SW12
39
13
IICRST
SW11
SW10
SW9
SW8
SW7
SW6
SW5
REXT
20kΩ
32
SYNC
30
RSET
35
ADDR1
36
ADDR2
40
GND
2
SW2
1
SW1
4,11
PGND
26
AGND
SW4
SW3
SW2
SW1
CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8
L
K
J
I
H
G
F
E
D
C
B
A
12345678
Figure 1 Typical Application Circuit (12×8)
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, 08/01/2016