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ASM805LESAF

更新时间： 2024-11-29 06:38:15
品牌 Logo 应用领域
PULSECORE 电源电路电池电源管理电路微处理器光电二极管监控
页数 文件大小 规格书
15页 344K
描述
μP Power Supply Supervisor With Battery Backup Switch

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中文翻译

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ASM805LESAF 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：0.150 INCH, ROHS COMPLIANT, SOIC-8Reach Compliance Code：unknown
风险等级：5.69Is Samacsys：N
其他特性：RESET THRESHOLD VOLTAGE IS 4.65V可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：R-PDSO-G8
长度：4.9 mm信道数量：2
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：1.1 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.91 mmBase Number Matches：1

ASM805LESAF 数据手册

 浏览型号ASM805LESAF的Datasheet PDF文件第2页浏览型号ASM805LESAF的Datasheet PDF文件第3页浏览型号ASM805LESAF的Datasheet PDF文件第4页浏览型号ASM805LESAF的Datasheet PDF文件第5页浏览型号ASM805LESAF的Datasheet PDF文件第6页浏览型号ASM805LESAF的Datasheet PDF文件第7页 
ASM690A/692A  
ASM802L/802M  
ASM805L  
April 2008  
rev 1.7  
µP Power Supply Supervisor With Battery Backup Switch  
General Description  
• Short circuit protection and thermal limiting  
The ASM690A / ASM692A / ASM802L / ASM802M /  
ASM805L offers complete single chip solutions for power  
supply monitoring and control battery functions in  
microprocessor systems. Each device implements four  
functions: Reset control, watchdog monitoring, battery-  
backup switching and powerfailure monitoring. In addition  
to microprocessor reset under power-up and power-down  
conditions, these devices provide battery-backup  
switching to maintain control in power loss and brown-out  
situations. Additional monitoring capabilities can provide  
an early warning of unregulated power supply loss before  
the voltage regulator drops out. The important features of  
these four functions are:  
• Small 8-pin SO and 8-pin PDIP packages  
• No external components  
• Specified over full temperature range  
Applications  
• Embedded control systems  
• Portable/Battery operated systems  
• Intelligent instruments  
• Wireless instruments  
• Wireless communication systems  
• PDAs and hand-held equipments  
• µP / µC power supply monitoring  
• Safety system  
• 1.6 second watchdog timer to keep microprocessor  
responsive  
Typical Operating Circuit  
• 4.40V or 4.65V VCC threshold for microprocessor reset  
at power-up and power-down  
•
SPDT (Single-pole, Double-throw) PMOS switch  
connects backup power to RAM if VCC fails  
• 1.25V threshold detector for power loss or general  
purpose voltage monitoring  
These features are pin-compatible with the industry  
standard power-supply supervisors. Short-circuit and  
thermal protection have also been added. The ASM690A  
/ ASM802L / ASM805L generate a reset pulse when the  
supply voltage drops below 4.65V and the ASM692A /  
ASM802M generate a reset below 4.40V. The ASM802L /  
ASM802M have power-fail accuracy to ± 2%. The  
ASM805L is the same as the ASM690A except that  
RESET is provided instead of RESET.  
Block Diagram  
Features  
• Two precision supply-voltage monitor options  
4.65V (ASM690A / ASM802L / ASM805L)  
4.40V (ASM692A / ASM802M )  
• Battery-backup power switch on-chip  
• Watchdog timer: 1.6 second timeout  
• Power failure / low battery detection  
PulseCore Semiconductor Corporation  
1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018  
www.pulsecoresemi.com  
Notice: The information in this document is subject to change without notice.  
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