TPS3801 Small Supply Voltage Supervisors with Manual Reset | TI.com

TPS3801 (ACTIVE)

Small Supply Voltage Supervisors with Manual Reset

Small Supply Voltage Supervisors with Manual Reset - TPS3801
Datasheet
 

Description

The TPS380x family of supervisory circuits monitor supply voltages to provide circuit initialization and timing supervision, primarily for DSPs and other processor-based systems.

These devices assert a push-pull RESET signal when the SENSE (adjustable version) or VDD (fixed version) drops below a preset threshold. The RESET output remains asserted for the factory programmed delay time after the SENSE or VDD return above its threshold.

The TPS380x devices, except the TPS3801-01, incorporate a manual reset input (MR). A low level at MR causes RESET to become active.

The TPS380x uses a precision reference to achieve an overall threshold accuracy of 2%—2.5%. These devices are available in a 5-pin SC-70 package, which is only about half the size of a 5-pin SOT-23 package.

The TPS380x devices are fully specified over a temperature range of –40°C to +85°C.

Features

  • Small, 5-Pin SC-70 (SOT-323) Package
  • Supply Current of 9 µA
  • Power-On Reset Generator With Fixed Delay Time
    • TPS3800 = 100 ms
    • TPS3801 = 200 ms
    • TPS3802 = 400 ms
  • Precision Supply Voltage Monitor 1.8 V, 2.5 V,
    2.7 V, 3 V, 3.3 V, 5 V, and Adjustable
  • Manual Reset Input (Except TPS3801-01)
  • Temperature Range:  –40°C to +85°C
  • APPLICATIONS
    • Applications Using DSPs, Microcontrollers, or Microprocessors
    • Wireless Communication Systems
    • Portable/Battery-Powered Equipment
    • Programmable Controls
    • Intelligent Instruments
    • Industrial Equipment
    • Notebook/Desktop Computers
    • Automotive Systems

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Parametrics Compare all products in Supervisor & reset ICs

 
Threshold Voltage 1 (Typ) (V)
Number 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)
TPS3801 TPS3800G27 TPS3802
Adjustable
1.71
2.25
2.64
2.93
4
4.55    
2.5     2.64
2.93    
1     1     1    
6     6     6    
2     2     2    
Active-low
Push-pull    
Active-low
Push-pull    
Active-low
Push-pull    
200     100     400    
Active-low enable
Manual reset    
Active-low enable
Manual reset    
Active-low enable
Manual reset    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
None     None     None