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LED DRIVER. IS31FL3728 Datasheet

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LED DRIVER. IS31FL3728 Datasheet






IS31FL3728 DRIVER. Datasheet pdf. Equivalent




IS31FL3728 DRIVER. Datasheet pdf. Equivalent





Part

IS31FL3728

Description

AUDIO MODULATED MATRIX LED DRIVER



Feature


IS31FL3728 AUDIO MODULATED MATRIX LED DR IVER December 2011 GENERAL DESCRIPTION IS31FL3728 is a general purpose 8×8 LE D matrix driver which features an audio frequency equalizer (EQ) mode or a gen eral LED dot matrix display mode. The g eneral LED matrix display defaults to a n 8×8 configuration, however, it can b e configured for a 5×11, 6×10, 7×9 d ot matrix display. The .
Manufacture

ISSI

Datasheet
Download IS31FL3728 Datasheet


ISSI IS31FL3728

IS31FL3728; matrix picture brightness can be modulat ed by audio. In either the audio EQ mod e or matrix display mode, the array is internally scanned, and requires only o ne-time programming, thus eliminating t he need for real time system resource u tilization. It programs the LED array t hrough I2C interface. In the general pu rpose display mode, each dot of the LED array is independ.


ISSI IS31FL3728

ently programmed on or off over time. In the audio EQ mode, the X axis (column) represents the frequency bands while t he Y axis (row) represents the strength of the input audio signal in each band . The number of LEDs lit in a column is proportional to the strength of the au dio signal in the corresponding band in a thermometer-coded manner. IS31FL3728 is available in 2.


ISSI IS31FL3728

4-pin QFN (4mm × 4mm). It operates from 2.7V to 5.5V over the temperature rang e of -40°C to +85°C. FEATURES 5~8 current source outputs for row control 8~11 outputs for column scan c ontrol Programmable 8×8, 7×9, 6×10, 5×11 matrix One-time programming, inte rnal scan Full scale LED current contro lled by internal register setting or au dio signal Audio frequenc.

Part

IS31FL3728

Description

AUDIO MODULATED MATRIX LED DRIVER



Feature


IS31FL3728 AUDIO MODULATED MATRIX LED DR IVER December 2011 GENERAL DESCRIPTION IS31FL3728 is a general purpose 8×8 LE D matrix driver which features an audio frequency equalizer (EQ) mode or a gen eral LED dot matrix display mode. The g eneral LED matrix display defaults to a n 8×8 configuration, however, it can b e configured for a 5×11, 6×10, 7×9 d ot matrix display. The .
Manufacture

ISSI

Datasheet
Download IS31FL3728 Datasheet




 IS31FL3728
IS31FL3728
AUDIO MODULATED MATRIX LED DRIVER
GENERAL DESCRIPTION
FEATURES
November 2016
IS31FL3728 is a general purpose 8×8 LED matrix
driver which features an audio frequency equalizer
(EQ) mode or a general LED dot matrix display mode.
The general LED matrix display defaults to an 8×8
configuration, however, it can be configured for a 5×11,
6×10, 7×9 dot matrix display. The matrix picture
brightness can be modulated by audio. In either the
audio EQ mode or matrix display mode, the array is
internally scanned, and requires only one-time
programming, thus eliminating the need for real time
system resource utilization.
It programs the LED array through I2C interface. In
the general purpose display mode, each dot of the
LED array is independently programmed on or off over
time. In the audio EQ mode, the X axis (column)
represents the frequency bands while the Y axis (row)
represents the strength of the input audio signal in
each band. The number of LEDs lit in a column is
proportional to the strength of the audio signal in the
corresponding band in a thermometer-coded manner.
IS31FL3728 is available in 24-pin QFN (4mm × 4mm).
It operates from 2.7V to 5.5V over the temperature
range of -40°C to +85°C (IS31FL3728-QFLS2-TR),
-40°C to +105°C (IS31FL3728-QFLS3-TR).
5~8 current source outputs for row control
8~11 outputs for column scan control
Programmable 8×8, 7×9, 6×10, 5×11 matrix
One-time programming, internal scan
Full scale LED current controlled by internal
register setting or audio signal
Audio frequency EQ display with programmable
input gain
LED matrix brightness can be modulated with
audio Signal
One address pin with 4 logic levels to allow four
I2C slave addresses
I2C interface
2.7V to 5.5V supply
Over-temperature protection
QFN-24 (4mm × 4mm) package
APPLICATIONS
Mobile phones and other hand-held devices for
LED displays.
Audio frequency equalizer display
TYPICAL APPLICATION CIRCUIT
Micro
Controller
VBattery
1μF
11
VCC
0.1μF
C1
C2
C3
C4
VDD
4.7kΩ 4.7kΩ
100kΩ
C5
C6
IS31FL3728 C7
1 C8
SDA
2
SCL
R8/C9
3
SDB
R7/C10
R6/C11
24
23
22
21
19
18
17
16
15
14
13
Audio In
4
IN
0.22μF
12
R5
10
R4
0.1μF
5
C_FILT
6
AD
20
GND
9
R3
8
R2
7
R1
Figure 1 Typical Application Circuit
Integrated Silicon Solution, Inc. www.issi.com
Rev.B, 15/11/2016
1




 IS31FL3728
IS31FL3728
PIN CONFIGURATION
Package
Pin Configuration (Top View)
QFN-24
SDA 1
SCL 2
SDB 3
IN 4
C_FILT 5
AD 6
18 C6
17 C7
16 C8
15 R8/C9
14 R7/C10
13 R6/C11
PIN DESCRIPTION
No. Pin
1
2
3
4
5
6
7~10, 12
11
13~15
16~19,21~24
20
SDA
SCL
SDB
IN
C_FILT
AD
R1~R5
VCC
R6/C11, R7/C10, R8/C9
C8~C1
GND
Thermal Pad
Description
Serial data.
Serial clock.
Shutdown the chip when pull to low.
Audio input.
Low pass filter cap for audio control.
I2C Address setting.
Current source outputs.
Power supply.
CMOS outputs.
Current sink outputs.
Ground.
Connect to GND.
Copyright © 2016 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. www.issi.com
Rev.B, 15/11/2016
2




 IS31FL3728
IS31FL3728
ORDERING INFORMATION
Industrial Range: -40°C to +85°C
Order Part No.
Package
IS31FL3728-QFLS2-TR
QFN-24, Lead-free
QTY/Reel
2500
Industrial Range: -40°C to +105°C
Order Part No.
Package
IS31FL3728-QFLS3-TR
QFN-24, Lead-free
QTY/Reel
2500
Integrated Silicon Solution, Inc. www.issi.com
Rev.B, 15/11/2016
3



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