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IS31FL3731-QFLS2-TR

Description
LED Driver,
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size751KB,22 Pages
ManufacturerIntegrated Silicon Solution ( ISSI )
Environmental Compliance
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IS31FL3731-QFLS2-TR Overview

LED Driver,

IS31FL3731-QFLS2-TR Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
package instructionHVQCCN,
Reach Compliance Codecompliant
ECCN codeEAR99
data entry modeSERIAL
display modeDOT MATRIX
Interface integrated circuit typeLED DISPLAY DRIVER
JESD-30 codeS-XQCC-N28
length4 mm
Number of functions1
Number of segments144
Number of terminals28
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Maximum seat height0.8 mm
Maximum supply voltage5.5 V
Minimum supply voltage2.7 V
Nominal supply voltage3.6 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal formNO LEAD
Terminal pitch0.4 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width4 mm
minfmax0.4 MHz
Base Number Matches1
IS31FL3731
AUDIO MODULATED MATRIX LED DRIVER
May 2013
GENERAL DESCRIPTION
The IS31FL3731 is a compact LED driver for 144
single LEDs. The device can be programmed via an
I2C compatible interface. The IS31FL3731 offers two
blocks each driving 72 LEDs with 1/9 cycle rate. The
required lines to drive all 144 LEDs are reduced to 18
by using the cross-plexing feature optimizing space on
the PCB. Additionally each of the 144 LEDs can be
dimmed individually with 8-bit allowing 256 steps of
linear dimming.
To reduce CPU usage up to 8 frames can be stored
with individual time delays between frames to play
small animations automatically. LED frames can be
modulated with audio signal.
IS31FL3731 is available in QFN-28 (4mm × 4mm) and
SSOP-28 package. It operates from 2.7V to 5.5V over
the temperature range of -40°C to +85°C.
FEATURES
Supply voltage range: 2.7V to 5.5V
400kHz I2C-compatible interface
144 LEDs in dot matrix
Individual blink control
8 frames memory for animations
Picture mode and animation mode
Auto intensity breathing during the switching of
different frames
LED frames displayed can be modulated with
audio signal intensity
LED light intensity can be modulated with audio
signal intensity
QFN-28 (4mm × 4mm) and SSOP-28 package
APPLICATIONS
Mobile phones and other hand-held devices for
LED display
LED in home appliances
TYPICAL APPLICATION CIRCUIT
Figure 1
Typical Application Circuit
Note 1:
The IC should be placed far away from the mobile antenna in order to prevent the EMI.
Note 2:
The average current of each LED is 3.2mA when R
EXT
= 20kΩ. The LED current can be modulated by the R
EXT
. Please refer to the
detail information in Page 18
.
Integrated Silicon Solution, Inc. – www.issi.com
Rev.D, 04/22/2013
1
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