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TC54VC3502ECB PDF预览

TC54VC3502ECB

更新时间： 2024-11-20 20:07:15
品牌 Logo 应用领域
美国微芯 - MICROCHIP 光电二极管
页数 文件大小 规格书
3页 27K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, EIAJ, SC-59, SOT-23A, 3 PIN

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中文翻译

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TC54VC3502ECB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOT-23A
包装说明：TSSOP,针数：3
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.56
Is Samacsys：N其他特性：DETECTION THRESHOLD VOLTAGE IS 3.5V
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G3JESD-609代码：e3
长度：2.92 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：3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：TSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.12 mm
最大供电电压 (Vsup)：10 V最小供电电压 (Vsup)：0.7 V
标称供电电压 (Vsup)：2.1 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：1.3 mm
Base Number Matches：1

TC54VC3502ECB 数据手册

 浏览型号TC54VC3502ECB的Datasheet PDF文件第2页浏览型号TC54VC3502ECB的Datasheet PDF文件第3页 
APPLICATION NOTE 2  
USING THE TELCOM TC54  
VOLTAGE DETECTOR  
INTRODUCTION  
OPERATION  
TelCom's TC54 series of voltage detectors are de-  
signedtosupersedeavarietyofdiscretecomparatorcircuits  
and bipolar technology voltage detectors.  
The TC54VN equivalent circuit is shown in Figure 1.  
The internal precision temperature-compensated reference  
and comparator circuit consistently monitor VIN for an under-  
voltagecondition. Whensuchaconditionoccurs, theoutput  
isforcedtotheactive(LOW)stateandremainsthereuntilVIN  
is once again within tolerance. As shown in the timing  
diagram of Figure 1, the output is forced active when VIN <  
(–VDET) (Where (–VDET) is the threshold voltage) and returns  
HIGH when VIN exceeds (–VDET) plus 5% hysteresis (ex-  
ample: if (–VDET) = 2.0V, the output will go HIGH when VIN >  
2.1V).  
These voltage detectors are especially suited for appli-  
cation in battery powered systems because of their ex-  
tremely low 1µA operating current. Each part is laser  
programmed to the desired trip point voltage over the range  
of 0.8V to 6.0V in 100mV steps. For complete design  
flexibility, complementary or open-drain output versions are  
available. TC54 package options include surface mount  
SOT-23 and SOT-89 or through-hole TO-92 types.  
TC54 BLOCK DIAGRAM AND TIMING  
TC54VC only  
INPUT VOLTAGE  
RELEASE  
VOLTAGE (+ VDET  
)
HYSTERESIS  
VOLTAGE  
2
DETECT VOLTAGE (- VDET  
)
V
IN  
MINIMUM OPERATING  
VOLTAGE  
GROUND LEVEL  
V
OUT  
–
+
1
OUTPUT VOLTAGE  
GROUND LEVEL  
V
REF  
V
SS  
3
Figure 1.  
TC54 AS A MICROPROCESSOR RESET  
GENERATOR  
V
IN  
Following a power outage, microprocessors require a  
reset to get them back into their starting state. Commonly  
used simple Schmitt trigger/capacitor circuits are inad-  
equate since they do not accurately monitor the power  
supply voltage tolerance. The TC54 series overcomes this  
problem with precise voltage detection. Figure 2 shows a  
reset circuit using a standard TC54 and external RC time  
constant, replacing bipolar integrated voltage detectors  
(see Table 1).  
V
IN  
R
V
OUT  
Microprocessor  
Circuit  
TC54VN  
C
V
SS  
Figure 2. Microprocessor Reset Circuit using TC54  
and External Delay  
AN2-2 8/22/97  
123

中文翻译

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