Datasheet > IS31FL3728

IS31FL3728

更新时间： 2024-11-11 12:23:07

品牌	Logo	应用领域
美国芯成 - ISSI		驱动器
页数	文件大小	规格书
12页	380K
描述
AUDIO MODULATED MATRIX LED DRIVER

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IS31FL3728 数据手册

IS31FL3728

AUDIO MODULATED MATRIX LED DRIVER

December 2011

GENERAL DESCRIPTION

FEATURES

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.



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



Audio frequency EQ display with programmable

input gain

LED matrix brightness can be modulated with

audio Signal

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.

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

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.



Mobile phones and other hand-held devices for

LED displays.

Audio frequency equalizer display

TYPICAL APPLICATION CIRCUIT

Figure 1 Typical Application Circuit

Integrated Silicon Solution, Inc. – www.issi.com

Rev.A, 12/19/2011

12 3 4 5 6 7...12

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