TPS3852-Q1 Automotive High-Accuracy Voltage Supervisor With Integrated Watchdog Timer | TI.com

TPS3852-Q1 (ACTIVE)

Automotive High-Accuracy Voltage Supervisor With Integrated Watchdog Timer

 

Description

The TPS3852-Q1 is a precision voltage supervisor with an integrated window watchdog timer. The TPS3852-Q1 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-Q1 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-Q1 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-Q1 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package. The TPS3852-Q1 features wettable flanks that allow for easy optical inspection.
















Features

  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • VDD Input Voltage Range: 1.6 V to 6.5 V
  • 0.8% Voltage Threshold Accuracy
  • Low Supply Current: IDD = 10 µA (typ)
  • 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 Voltage Monitoring:
    • Supports Common Rails from 1.8 V to 5.0 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

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Part number Order 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)
TPS3852-Q1 Order now 1.67
1.73
3.07
3.17    
1     6.5     1.6     Active-low
Open-drain    
200     Active-low enable
Manual reset
Watchdog disable
Watchdog timer
Window watchdog    
Automotive     -40 to 125     Programmable    
TPS3430 Order now   1     6.5     1.6     Active-low
Open-drain    
Programmable     Watchdog timer
Window watchdog
Watchdog disable    
Catalog     -40 to 125     Programmable    
TPS3430-Q1 Order now   1     6.5     1.6     Active-low
Open-drain    
Programmable     Watchdog timer
Window watchdog
Watchdog disable    
Automotive     -40 to 125     Programmable    
TPS3431 Order now   1     6.5     1.8     Active-low
Open-drain    
200     Watchdog timer
Watchdog disable
Active-low enable    
Catalog     -40 to 125     Programmable    
TPS3431-Q1 Order now   1     6.5     1.8     Active-low
Open-drain    
200     Watchdog timer
Watchdog disable
Active-low enable    
Automotive     -40 to 125     Programmable    
TPS3700 Order now Adjustable     1
2    
18     1.8     Active-low
Open-drain    
0     Undervoltage and overvoltage monitor
Wide input voltage
Dual output    
Catalog     -40 to 125     None    
TPS3700-Q1 Order now Adjustable     1
2    
18     1.8     Active-low
Open-drain    
0     Undervoltage and overvoltage monitor
Wide input voltage
Dual output    
Automotive     -40 to 125     None    
TPS3702 Order now 1
1.2
1.8
3.3
5    
1     18     2     Active-low
Open-drain    
0     Undervoltage and overvoltage monitor
Wide input voltage
Dual output    
Catalog     -40 to 125     None