TPS3808 - TPS3808

TPS3808 (正在供货)

TPS3808

 

描述

The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3808 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and is fully specified over a temperature range of –40°C to 125°C (TJ).

特性

  • Power-On Reset Generator with Adjustable Delay
    Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typ
  • Fixed Threshold Voltages for Standard Voltage
    Rails from 0.9 V to 5 V and Adjustable Voltage
    Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to 125°C
  • Small SOT-23 and 2-mm × 2-mm WSON
    Packages

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参数 与其它产品相比 监控器 和 复位 IC

 
Threshold Voltage 1 (Typ) (V)
# of Supplies Monitored
VCC (Max) (V)
VCC (Min) (V)
Output Driver Type / Reset Output
Time Delay (ms)
Features
Rating
Operating Temperature Range (C)
Watchdog Timer WDI (sec)
TPS3808 TPS3890 TPS3895 TPS3896 TPS3897 TPS3898
Adjustable
0.84
1.12
1.16
1.4
1.67
1.77
2.33
2.79
3.07
4.65   
Adjustable
1.15
1.44
1.73
2.4
2.89
3.17   
Adjustable    Adjustable    Adjustable    Adjustable   
1    1    1    1    1    1   
6.5    5.5    6.5    6.5    6.5    6.5   
1.8    1.5    1.7    1.7    1.7    1.7   
Active-low
Open-drain   
Active-low
Open-drain   
Active-high
Push-pull   
Active-low
Push-pull   
Active-high
Open-drain   
Active-low
Open-drain   
Programmable    Programmable    Programmable    Programmable    Programmable    Programmable   
Active Low Enable
Manual Reset   
Active Low Enable
Manual Reset   
Active High Enable
Manual Reset   
Active Low Enable
Manual Reset   
Active High Enable
Manual Reset   
Active Low Enable
Manual Reset   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
None    None    None    None    None    None   

其它合格版本 TPS3808

版本 器件型号 定义
汽车电子 TPS3808-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件
增强型产品 TPS3808-EP 支持国防、航天和医疗应用