High-Accuracy Voltage Supervisor With Programmable Window Watchdog Timer - TPS3852

TPS3852 (ACTIVE)

High-Accuracy Voltage Supervisor With Programmable Window Watchdog Timer

 

Description

The TPS3852 is a precision voltage supervisor with an integrated window watchdog timer. The TPS3852 includes a precision undervoltage supervisor with an undervoltage threshold (VITN) that achieves 0.8% accuracy over the specified temperature range of –40°C to +125°C. In addition, the TPS3852 includes accurate hysteresis making the device ideal for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timer.

The TPS3852 includes a programmable window watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled to avoid undesired watchdog timeouts during the development process.

The TPS3852 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package.

Features

  • VDD Input Voltage Range: 1.6 V to 6.5 V
  • 0.8% Voltage Threshold Accuracy
  • Low Supply Current: IDD = 10 µA (typical)
  • User-Programmable Watchdog Timeout
  • Factory Programmed Precision Watchdog and Reset Timers:
    • ±15% Accurate WDT and RST Delays
  • Open-Drain Outputs
  • Manual Reset Input (MR)
  • Precision Undervoltage Monitoring
    • Supports Common Rails from 1.8 V to 5 V
    • 4% and 7% Thresholds Available
    • 0.5% Hysteresis
  • Watchdog Disable Feature
  • Available in a Small 3-mm × 3-mm, 8-Pin VSON Package

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Parametrics Compare all products in Supervisor and Reset 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)
TPS3852 TPS3850 TPS3851
3.07
3.17   
Adjustable
1.11
1.15
1.67
1.72
2.79
2.88
3.06
3.16
4.65
4.8   
1.67
1.73
2.32
2.4
2.79
2.88
3.07
3.17
4.65
4.8   
1    1    1   
6.5    6.5    6.5   
1.6    1.6    1.6   
Active-low
Open-drain   
Active-low
Open-drain   
Active-low
Open-drain   
200    Programmable    200   
Active Low Enable
Manual Reset
Watchdog Disable
Watchdog Timer
Window Watchdog   
Over Voltage Sense
Watchdog Disable
Watchdog Timer
Window Comparator
Window Watchdog   
Active Low Enable
Manual Reset
Watchdog Disable
Watchdog Timer   
Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125   
Programmable    Programmable    Programmable   

Other qualified versions of TPS3852

Version Part Number Definition
Automotive TPS3852-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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