IS31FL3193 3-Channel Fun LED Driver Evaluation Board Guide
Description
IS31FL3193 3-channel LED driver demo board is used
to demonstrate and evaluate the IS31FL3193.
IS31FL3193 is a constant current LED driver featuring
One Shot Program Mode and PWM Control Mode for
RGB lighting effects. The IS31FL3193 can drive three
LEDs or one group RGB LED.
The demo board can perform breathing effect in One
Shot Programming Mode to display the function of
IS31FL3193.
Recommended Equipment
•
5.0V, 2A power supply
Absolute Maximum Ratings
•
≤
5.5V power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
Procedure
The IS31FL3193 evaluation board is fully assembled
and tested. Follow the steps listed below to verify
board operation.
Caution: Do not turn on the power supply until all connections
are completed.
Features
•
•
•
•
Voltage range from 3.5V to 5.5V
One group RGB LED or three single color LEDs
breathing system-free pre-established pattern
3 independently controlled outputs of 256 PWM
steps
I2C interface, automatic address increment
function
Available in DFN-10 (3mm × 3mm) package
1)
Connect the ground terminal of the power supply
to the GND and the positive terminal to the VCC.
Or connect the DC power to the connector (DC
IN).
Turn on the power supply and pay attention to the
supply current. If the current exceeds 300mA,
please check for circuit fault.
Enter the desired mode of display by toggling the
MODE button.
•
2)
Quick Start
3)
Figure 1: Photo of IS31FL3193 Evaluation Board
Evaluation Board Ordering Information
Part No.
IC Package
IS31FL3193-DLS2-EB QFN-20, Lead-free
Table1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing
team at
analog_mkt@issi.com
or (408) 969-6600.
Integrated Silicon Solution, Inc. – www.issi.com
R1.0, 07/12/2012
1
IS31FL3193 3-Channel Fun LED Driver Evaluation Board Guide
Evaluation Board Operation
The IS31FL3193 evaluation board has three display
modes. Press MODE button to switch configurations.
1) One-Shot Program Mode is set by default to
function as a RGB unit exhibiting identical
breathing patterns. There are twenty possible
colors within the LED’s breathing range color
spectrum.
2) In automatic mode, the LED’s will function as a
RGB display with automatic color changing
patterns.
3) In third configuration, three LED’s will brighten
individually and exhibit unique behaviors.
*Note:
IS31FL3193 solely controls the FxLED function on the
evaluation board.
Software Control
JP1 default setting is close circuit. If it is set to open,
the on-board MCU will stop working. The I2C pins
are set to High Impedance. External I2C signals can
be connected to TP3 to control the IS31FL3193 LED
driver.
Please refer to the datasheet to get more information about
IS31FL3193.
VCC
U1
2
VCC
C2
1uF
TP1
CON1
DC IN
VCC
C1
10uF
R2
4.7K
R1
4.7K
SDA
SCL
TP2
CLK/V_BM
SDB
R5
100K
VCC
1
3
C6
1uF
R6
100K
R7
100K
G1
2
G2
4
S2
G1
G2
APM4953
7
K1
MODE
VCC
1
3
C3
1uF
U2
VDD
VOUT
SD
BP
GND
LDO
LPC922
4
3V
5
C4
10nF
C5
1uF
CLK/V_BM
8
19
20
R4
100K
R3
4.7K
10
9
S2
6
3
5
3V
6
U4
D1
D2
S1
S1
8
7
VLED
JP1
OPEN=EXT CTRL
1
2
U3
VRGB
9
8
10
1
SDA
SCL
V_BM
SDB
IS31FL3193
3V
OUT1
OUT2
OUT3
AD
GND
VLED
D1
D2
D3
VRGB
D4
G
R
B
3
4
5
7
6
3V
P0.0
P1.7
P1.6
P3.1
P3.0
P1.2
P1.3
P1.4
P0.2
P0.1
VDD
P1.5
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
VSS
15
TP4
4
RST
18
SDB
17
P0.4
16
P0.5
14
SDA
13
SCL
12
G1
11
G2
5
SCL
SDA
CLK/V_BM
SDB
GND
TP3
1
2
3
4
5
3V
P0.5
P0.4
RST
GND
5
4
3
2
1
ICP
2
Figure 2:IS31FL3193 Application Schematic
Integrated Silicon Solution, Inc. – www.issi.com
R1.0, 07/12/2012
2
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