IS31FL3728中文资料8×8 LED matrix driver which features an audio frequency equalizer (EQ) mode or a general LED dot matrix display mode数据手册Lumissil规格书

描述 Description

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 m atrix 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).

特性 Features

• 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

应用 Application

• Mobile phones and other hand-held devices for LED displays.
• Audio frequency equalizer display

简介

IS31FL3728属于集成电路（IC）的LED驱动器。由制造生产的IS31FL3728LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。