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MIC2779L-2BM5 PDF预览

MIC2779L-2BM5

更新时间： 2024-11-19 22:37:15
品牌 Logo 应用领域
麦瑞 - MICREL /
页数 文件大小 规格书
8页 54K
描述
Voltage Monitor with Adjustable Hysteresis Preliminary Information

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中文翻译

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MIC2779L-2BM5 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：SOT-23, 5 PINReach Compliance Code：not_compliant
Factory Lead Time：1 week风险等级：5.81
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G5JESD-609代码：e0
长度：2.91 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：5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：LSSOP封装等效代码：TSOP5/6,.11,37
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：240电源：1.5/5.5 V
认证状态：Not Qualified座面最大高度：1.45 mm
子类别：Power Management Circuits最大供电电流 (Isup)：0.002 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：1.5 V
标称供电电压 (Vsup)：1.6 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn85Pb15)
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL阈值电压标称：+1.24V
处于峰值回流温度下的最长时间：30宽度：1.625 mm
Base Number Matches：1

MIC2779L-2BM5 数据手册

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MIC2779  
Voltage Monitor with Adjustable Hysteresis  
Preliminary Information  
General Description  
Features  
The MIC2779 is a voltage monitor—uniquely designed to  
detect two separate voltage thresholds—combined with a  
delay generator and logic. It is designed for monitoring the  
battery supply of portable digital systems, particularly PDAs,  
pagers, and cellular telephones.  
• Optimized for PDAs, cellular telephones, pagers,  
and other battery-powered devices  
• Independently adjustable high- and  
low-voltage thresholds  
• Internal logic prevents battery-voltage-fluctuation chatter  
• High ±2% voltage threshold accuracy; 1% available  
• Built in 140ms (minimum) delay deglitches output  
• Extremely low 1µA typical supply current  
• For applications requiring open-drain output, see  
MIC2778/MIC833  
High- and low-voltage thresholds can be adjusted indepen-  
dently,allowingforwidehysteresis.Voltagedetectionthresh-  
olds are accurate to 2%.  
Ifthebatteryvoltagefallsbelowthelow-voltagethreshold,the  
output /RST or RST is asserted and latched, preventing  
system operation until the battery is replaced or recharged.  
Internal logic prevents the output from chattering due to  
battery recovery or load removal. The output is asserted for  
140ms (minimum) when a fresh battery is inserted. For  
applications requiring open-drain output, see MIC2778/  
MIC833.  
• Immune to brief power supply transients  
• 5-lead SOT-23 package  
Applications  
• PDAs  
• Pagers  
The IC’s power supply input is separate from the detector  
inputs, allowing the MIC2779 to be powered from a down-  
stream supply, such a boost converter. Supply current is  
extremely low (1µA, typical), making it ideal for portable  
applications.  
• Cordless phones  
• Consumer electronics  
• Embedded controllers  
• Personal electronics  
A high-precision 1% grade is available. The MIC2779 is  
supplied in Micrel’s IttyBitty™ 5-lead SOT-23-5 package.  
Typical Application  
VOUT  
3.0V  
MIC5207-3.0BM5  
OUT  
BYP  
GND  
IN  
470pF  
MIC2779L  
Li-Ion  
Cell  
4.7µF  
604k  
1%  
VDD  
LTH  
EN  
/RST  
56k  
1%  
HTH GND  
340k  
1%  
V
BAT(hi) = 3.6V  
VBAT(lo) = 3.1V  
Cellular Telephone Battery Monitor  
IttyBitty™ is a trademark of Micrel, Inc.  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com  
June 2000  
1
MIC2779  
12345678

中文翻译

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