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LTC2909CDDB-3.3 PDF预览

LTC2909CDDB-3.3

更新时间: 2024-11-06 04:43:39
品牌 Logo 应用领域
凌特 - Linear 监视器
页数 文件大小 规格书
16页 231K
描述
Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

LTC2909CDDB-3.3 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DFN包装说明:3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.09可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-N8
JESD-609代码:e0长度:3 mm
湿度敏感等级:1信道数量:2
功能数量:3端子数量:8
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:VSON
封装等效代码:SOLCC8,.08,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):235
电源:3.3 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Power Management Circuits
最大供电电流 (Isup):0.15 mA最小供电电压 (Vsup):0.5 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:2 mm
Base Number Matches:1

LTC2909CDDB-3.3 数据手册

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LTC2909  
Precision Triple/Dual Input  
UV, OV and Negative  
Voltage Monitor  
U
DESCRIPTIO  
FEATURES  
TheLTC®2909isadualinputmonitorintendedforavariety  
of system monitoring applications. Polarity selection and  
a buffered reference output allow the LTC2909 to monitor  
positive and negative supplies for undervoltage (UV) and  
overvoltage (OV) conditions.  
Two Low Voltage Adjustable Inputs (0.5V)  
Pin Selectable Input Polarity Allows Negative  
and OV Monitoring  
Guaranteed Threshold Accuracy: 1.5ꢀ  
6.5V Shunt Regulator for High Voltage Operation  
Low 50µA Quiescent Current  
The two inputs have a nominal 0.5V threshold, featuring  
tight 1.5% threshold accuracy over the entire operating  
temperature range. Glitch filtering ensures reliable reset  
operation without false triggering. A third fixed-threshold  
UVLO monitor on the part’s V (also 1.5% accuracy) is  
available for standard logic supplies.  
Buffered 1V Reference for Negative Supply Offset  
Input Glitch Rejection  
Adjustable Reset Timeout Period  
Selectable Internal Timeout Saves Components  
CC  
Open-Drain RST Output  
Accurate UVLO for 2.5V, 3.3V, 5V Systems  
The common reset output has a timeout that may use  
a preset 200ms, be set by an external capacitor or be  
disabled. A three-state input pin sets the input polarity  
of each adjustable input without requiring any external  
components.  
Ultralow Voltage Reset: V = 0.5V Guaranteed  
CC  
Space Saving 8-Lead TSOT-23 and 3mm × 2mm DFN  
Packages  
U
APPLICATIO S  
The LTC2909 provides a highly versatile, precise, space-  
conscious, micropower solution for supply monitoring.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Desktop and Notebook Computers  
Handheld Devices  
Network Servers  
Core, I/O Monitor  
Automotive  
U
TYPICAL APPLICATIO  
3.3V UV/OV (Window) Monitor Application with  
200ms Internal Timeout (3.3V Logic Out)  
SEL Pin Connection for Input Polarity  
Combinations  
C
BYP  
100nF  
3.3V  
POLARITY  
R
R
PU  
P6  
V
ADJ1  
+
ADJ2  
+
SEL PIN  
10k  
453k  
CC  
FAULT  
OUTPUT  
ADJ1  
RST  
V
CC  
LTC2909-2.5  
R
10.7k  
P5  
REF  
ADJ2  
SEL  
OPEN  
GND  
+
TMR  
R
76.8k  
P4  
GND  
2909 TA01a  
2909fa  
1

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