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ELM712 PDF预览

ELM712

更新时间: 2024-10-30 04:17:19
品牌 Logo 应用领域
ELM /
页数 文件大小 规格书
3页 24K
描述
LED Runner

ELM712 数据手册

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ELM712  
LED Runner  
Description  
Features  
The ELM712 is a handy circuit for controlling up  
• Low power CMOS design  
to five LEDs in novelty devices. One pushbutton  
press is all it takes to initiate about 15 seconds of  
LED activity, before the circuit reverts back to its  
very low current standby mode.  
• Wide supply range - 3.0 to 5.5 volt operation  
• Auto-off mode conserves batteries  
• Single push-button to activate  
All of the logic required for circuit operation is  
contained wholly within this 8 pin integrated circuit.  
Normally only a pushbutton, the LEDs, and a battery  
are all that are needed for a complete circuit. At  
higher voltages, a single current limiting resistor may  
be required to limit LED current.  
• Direct drive high current outputs  
• No external timing components required  
The ELM712 drives each LED output in a  
sequential fashion, at approximately 10 Hz. By only  
driving one output at a time, peak current and thus  
battery requirements are reduced.  
Connection Diagram  
PDIP and SOIC  
(top view)  
Applications  
• Campaign buttons  
• Battery operated toys  
• Dress ties  
1
2
3
4
8
7
6
5
VDD  
LED4  
LED5  
start  
VSS  
LED3  
LED2  
LED1  
• Signs  
• Holiday Ornaments  
Block Diagram  
Master Oscillator  
Output Drivers  
VDD  
Power  
Control  
4
start  
5
6
7
2
3
LED1 LED2 LED3 LED4 LED5  
ELM712DSB  
Elm Electronics – Circuits for the Hobbyist  
< http://www.elmelectronics.com/ >  
1 of 3  

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