SLVS165N April   1998  – July 2022 TPS3820 , TPS3823 , TPS3824 , TPS3825 , TPS3828

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Electrical Characteristics for TPS3823A-33 only
    7. 7.7 Timing Requirements
    8. 7.8 Switching Characteristics
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Manual Reset (MR)
      2. 8.3.2 Active-High or Active-Low Output
      3. 8.3.3 Push-Pull or Open-Drain Output
      4. 8.3.4 Watchdog Timer (WDI)
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Supply Rail Monitoring With Watchdog Time-Out and 200-ms Delay
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Decoupling WDI During Reset Event
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Spice Models
      2. 12.1.2 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.6 Electrical Characteristics for TPS3823A-33 only

over operating junction temperature range -40°C to 125°C (unless otherwise noted) for TPS3823A-33 only

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOH High-level output voltage RESET VDD = VIT− + 0.2 V, IOH = –30 μA 0.8 × VDD V
VOL Low-level output voltage RESET VDD = VIT− – 0.2 V, IOL = 1.2 mA 0.45 V
Power-up reset voltage(1) VDD ≥ 1.1 V, IOL = 20 μA 0.4 V
VIT− Negative-going input
threshold voltage (2)		 2.83 2.93 3 V
Vhys Hysteresis at VDD input 30 mV
IIH(AV) Average high-level input current WDI WDI = VDD, time average (DC = 88%) 120 µA
IIL(AV) Average low-level input current WDI = 0.3 V, VDD = 5.5 V time average (DC = 12%) –15
IIH High-level input current WDI WDI = VDD 140 190 µA
MR MR = VDD × 0.7, VDD = 5.5 V –40 –60
IIL Low-level input current WDI WDI = 0.3 V, VDD = 5.5 V 140 190 µA
MR MR = 0.3 V, VDD = 5.5 V –110 –160
IOS Output short-circuit current(3) RESET VDD = VIT, max + 0.2 V, VO = 0 V –400 µA
IDD Supply current WDI, MR, and outputs unconnected 15 25 µA
Internal pullup resistor at MR 52 kΩ
Ci Input capacitance at MR, WDI VI = 0 V to 5.5 V 5 pF
(1) The lowest supply voltage at which RESET becomes active. tr, VDD ≥ 15 μs/V.
(2) To ensure best stability of the threshold voltage, a bypass capacitor (ceramic, 0.1 μF) must be placed near the supply terminals.
(3) The RESET short-circuit current is the maximum pullup current when RESET is driven low by a microprocessor bidirectional reset pin.