Datasheet > AS1109-BSSU

AS1109-BSSU

更新时间： 2024-11-25 06:37:39

品牌	Logo	应用领域
艾迈斯 - AMSCO		驱动器
页数	文件大小	规格书
26页	1003K
描述
Constant-Current, 8-Bit LED Driver with Diagnostics

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AS1109-BSSU 技术参数

生命周期：	Active	Reach Compliance Code：	unknown
风险等级：	5.61	Base Number Matches：	1

AS1109-BSSU 数据手册

Data Sheet

AS1109

Constant-Current, 8-Bit LED Driver with Diagnostics

1 General Description

2 Key Features

ꢀ

8 Constant-Current Output Channels

The AS1109 is designed to drive up to 8 LEDs through a

fast serial interface and features 8 output constant cur-

rent drivers and an on-chip diagnostic read-back func-

tion.

ꢀ

Excellent Output Current Accuracy

- Between Channels: ±2%

- Between AS1109 Devices: ±2%

The high clock-frequency (up to 50MHz), adjustable out-

put current, and flexible serial interface makes the

device perfectly suited for high-volume transmission

applications.

ꢀ

Output Current Per Channel: 0.5 to 100mA

Controlled In-Rush Current

Over-Temperature, Open-LED, Shorted-LED

Diagnostics Functions

Output current is adjustable (up to 100mA/channel)

using an external resistor (REXT).

The serial interface with Schmitt trigger inputs includes

an integrated shift register. Additionally, an internal data

ꢀ

Low-Current Test Mode

Global Fault Monitoring

The device features integrated diagnostics for over-

temperature, open-LED, and shorted-LED conditions.

Integrated registers store global fault status information

during load as well as the detailed temperature/open-

LED/shorted-LED diagnostics results.

Low Shutdown Mode Current: 3µA

Fast Serial Interface: up to 50MHz

Cascaded Configuration

Fast Output Drivers Suitable for PWM

The AS1109 also features a low-current diagnostic

mode to minimize display flicker during fault testing.

16-pin SOIC-150, 16-pin QFN (4x4mm) and 16-pin

SSOP-150 Package

With an operating temperature range from -40 to

+125°C the AS1109 is also ideal for industrial applica-

tions.

3 Applications

The AS1109 is available in a 16-pin SOIC-150, a 16-pin

QFN (4x4mm) and the 16-pin SSOP-150 package.

The device is ideal for fixed- or slow-rolling displays

using static or multiplexed LED matrix and dimming

functions, large LED matrix displays, mixed LED display

and switch monitoring, displays in elevators, public

transports (underground, trains, buses, taxis, airplanes,

etc.), large displays in stadiums and public areas, price

indicators in retail stores, promotional panels, bar-graph

displays, industrial controller displays, white good pan-

els, emergency light indicators, and traffic signs.

Figure 1. Main Diagram and Pin Assignments

+VLED

GND

SDI

VDD

REXT

OUTN0 OUTN1 OUTN2 OUTN3 OUTN4 OUTN5 OUTN6 OUTN7

CLK

14 SDO

OEN

AS1109

SDI

SDO

OUTN0

OUTN1

OUTN2

OUTN3

OUTN7

11 OUTN6

OUTN5

OUTN4

CLK

OEN

REXT

VDD

GND

www.austriamicrosystems.com

Revision 1.18

1 - 26

12 3 4 5 6 7...26

中文翻译

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