IS31FL3216 16 Channels LED Driver Evaluation Board Guide
Integrated Silicon Solution, Inc. – www.issi.com
1
R1.0, 07/12/2012
Description
The IS31FL3216 is a fun light LED controller with an
audio modulation mode. It can store data of 8 frames
with internal RAM to play small animations
automatically.
IS31FL3216 can sample the input signal to modulate
the intensity of LEDs, or control 8 frames playing by
internal ADC block.
The LED current of each channel can be set in 256
steps by adjusting the PWM duty cycle through an I2C
interface.
Features
•
Supply voltage range from 2.7V to 5.5V
•
I2C interface, automatic address increment
function
•
Internal RAM
•
Modulate LED brightness with 256 steps PWM
•
Each channel can be controlled independently
•
Auto Frame Play Mode with 8 frames
•
8 frames memory for animations
•
Audio Frame Mode with 8 frames
•
8 of 16 outputs not used as LED drivers can be
used as GPIO ports
•
QFN-28 (4mm × 4mm) package
Quick Start
Recommended Equipment
•
5.0V, 2A power supply
•
Audio source( i.e. MP3 player, Notebook PC, etc)
•
8
Ω
speaker
Absolute Maximum Ratings
•
≤
5.5V power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
Procedure
The IS31FL3216 evaluation board is fully assembled
and tested. Follow the steps to operate.
Caution: Do not turn on the power supply until all connections
are completed.
1)
Connect an 8
Ω
speaker to the “SPK” connector.
2)
Connect the audio source to the “AUDIO IN”
connector.
3)
Connect the DC power to the connector (DC IN).
4)
Turn on the power supply and pay attention to the
supply current. If the current exceeds 1A, please
check for circuit fault.
5)
Turn on the audio signal.
6)
Adjust the input audio signal to obtain best sound
output performance
Figure 1: Photo of IS31FL3216 Evaluation Board
Evaluation Board Ordering Information
Part No.
IC Package
IS31FL3216-QFLS2-EB QFN-20, Lead-free
Table1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing
team at
or (408) 969-6600
.
