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AS1109-BSOT PDF预览

AS1109-BSOT

更新时间: 2024-01-06 09:52:24
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

AS1109-BSOT 技术参数

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

AS1109-BSOT 数据手册

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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  
register stores the currently displayed 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  
1
2
3
4
5
6
7
8
16  
15  
VDD  
REXT  
OUTN0 OUTN1 OUTN2 OUTN3 OUTN4 OUTN5 OUTN6 OUTN7  
CLK  
14 SDO  
LD  
OEN  
13  
12  
AS1109  
AS1109  
SDI  
SDO  
OUTN0  
OUTN1  
OUTN2  
OUTN3  
OUTN7  
11 OUTN6  
OUTN5  
OUTN4  
10  
9
CLK  
LD  
OEN  
REXT  
VDD  
GND  
www.austriamicrosystems.com  
Revision 1.18  
1 - 26  

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