SLVS165O April   1998  – March 2025 TPS3820 , TPS3823 , TPS3824 , TPS3825 , TPS3828

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Electrical Characteristics for TPS3823A-33 only
    7. 6.7  Timing Requirements
    8. 6.8  Switching Characteristics
    9. 6.9  Timing Diagram
    10. 6.10 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Manual Reset (MR)
      2. 7.3.2 Active-High or Active-Low Output
      3. 7.3.3 Push-Pull or Open-Drain Output
      4. 7.3.4 Watchdog Timer (WDI)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Supply Rail Monitoring With Watchdog Time-Out and 200ms Delay
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Decoupling WDI During Reset Event
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 Spice Models
      2. 9.1.2 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

TPS3820 TPS3823 TPS3824 TPS3825 TPS3828 5-Pin SOT-23 TPS3820, TPS3823, TPS3823A, TPS3828: DBV Package (Top View) Figure 5-1 5-Pin SOT-23 TPS3820, TPS3823, TPS3823A, TPS3828: DBV Package (Top View)
TPS3820 TPS3823 TPS3824 TPS3825 TPS3828 5-Pin SOT-23TPS3824: DBV Package(Top View) Figure 5-2 5-Pin SOT-23TPS3824: DBV Package(Top View)
TPS3820 TPS3823 TPS3824 TPS3825 TPS3828 5-Pin SOT-23TPS3825: DBV Package(Top View) Figure 5-3 5-Pin SOT-23TPS3825: DBV Package(Top View)
Table 5-1 Pin Functions
PIN I/O DESCRIPTION
NAME TPS3820, TPS3823, TPS3823A, TPS3828 TPS3824 TPS3825
GND 2 2 2 — Ground connection
MR 3 — 4 I Manual-reset input. Pull low to force a reset. RESET remains low as long as MR is low and for the time-out period after MR goes high. Leave unconnected or connect to VDD when unused.
RESET — 3 3 O Active-high reset output. Either push-pull or open-drain output stage.
RESET 1 1 1 O Active-low reset output. Either push-pull or open-drain output stage.
VDD 5 5 5 I Supply voltage. Powers the device and monitors the device voltage.
WDI 4 4 — I Watchdog timer input. If WDI remains high or low longer than the time-out period, then reset is triggered. The timer clears when reset is asserted or when WDI sees a falling edge. If left floating, the device generates pulses internally to prevent watchdog reset event. WDI must be driven low or high for watchdog error to assert output.