Datasheet > STLED524

STLED524

更新时间： 2023-12-20 18:44:35

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动驱动器
页数	文件大小	规格书
72页	3174K
描述
智能矩阵LED显示屏驱动器

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中文翻译

获取价格

数据手册
替代型号

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STLED524 数据手册

STLED524

Intelligent matrix LED display driver

Datasheet

preliminary data

Description

The STLED524 is a 5x24 dot matrix LED display

driver. It can drive each dot with a current up to 20

mA. Rows of the matrix are multiplexed. Each

LED in a row is driven by a separate low-side

current mirror. Current regulators are supplied by

an integrated boost DC-DC converter. Its output

voltage can be adjusted by the internal register to

optimize efficiency according to the type of LEDs

(their forward voltage). This reduces current

mirror power dissipation and improves overall

efficiency. The STLED524 also includes an

internal LDO regulator, which can provide a

supply voltage for an additional circuitry.

CSP 56 bumps 0.4 mm pitch 3.4x3.0 mm

Features

• Operating input voltage range from 2.7 V to

Maximum current, provided by each current

mirror, is adjusted by R_SETresistor. Current of

each LED (dot) can be dimmed in 255 steps due

to settings of internal registers.

5.5 V

• 5x24 LED matrix driver

• Adjustable luminance separately for each LED

thanks to internal registers in 255 steps

The STLED524 features PWM dimming in 255

steps. Automatic slope function is also supported.

Cycle time and slope time can be adjusted for

each LED (dot) separately.

• Internal registers store 2 patterns

• 4-way scroll function with the possibility to lock

column data

• PWM dimming in 255 steps

• Adjustable blanking time

• Automatic slope function

Two patterns can be stored in internal registers.

The automatic scrolling of the display content is

possible in 4 ways.

• Cycle time and slope time adjustable for each

Table 1. Device summary

dot separately

Order code

Package

Packaging

• SPI interface

STLED524

CSP

Tape and reel

• Integrated step-up converter with adjustable

output voltage

• Integrated LDO with 3.1 V output @ 80 mA

• Boost efficiency 92% at 350 mA

• 2.4 MHz switching frequency

• CSP 56 bumps 0.4 mm pitch 3.4x3.0 mm

Applications

• Appliance user interfaces

• Display driver for handheld units

April 2014

DocID026217 Rev 1

1/72

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

www.st.com

12 3 4 5 6 7...72

中文翻译

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STLED524 替代型号

型号	品牌	替代类型	描述	数据表
AMPDEDH-A03T	ABRACON	功能相似	AMPD OSC MEMS XO DUAL FREQUENCY

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