ZHCSL90 August   2020 TPS25980

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     7
  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 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 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 Undervoltage Protection (UVLO and UVP)
      2. 8.3.2 Overvoltage Protection (OVP)
      3. 8.3.3 Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 8.3.3.1 Slew Rate and Inrush Current Control (dVdt)
        2. 8.3.3.2 Circuit Breaker
        3. 8.3.3.3 Short-Circuit Protection
      4. 8.3.4 Overtemperature Protection (OTP)
      5. 8.3.5 Analog Load Current Monitor (IMON)
      6. 8.3.6 Power Good (PG)
      7. 8.3.7 Load Detect/Handshake (LDSTRT)
    4. 8.4 Fault Response
    5. 8.5 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application: Patient Monitoring System in Medical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Device Selection
        2. 9.2.2.2 Setting the Current Limit Threshold: RILIM Selection
        3. 9.2.2.3 Setting the Undervoltage Lockout Set Point
        4. 9.2.2.4 Choosing the Current Monitoring Resistor: RIMON
        5. 9.2.2.5 Setting the Output Voltage Ramp Time (TdVdt)
          1. 9.2.2.5.1 Case 1: Start-Up Without Load: Only Output Capacitance COUT Draws Current
          2. 9.2.2.5.2 Case 2: Start-Up With Load: Output Capacitance COUT and Load Draw Current
        6. 9.2.2.6 Setting the Load Handshake (LDSTRT) Delay
        7. 9.2.2.7 Setting the Transient Overcurrent Blanking Interval (tITIMER)
        8. 9.2.2.8 Setting the Auto-Retry Delay and Number of Retries
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Optical Module Power Rail Path Protection
        1. 9.3.1.1 Design Requirements
        2. 9.3.1.2 Device Selection
        3. 9.3.1.3 External Component Settings
        4. 9.3.1.4 Voltage Drop
        5. 9.3.1.5 Application Curves
      2. 9.3.2 Input Protection for 12-V Rail Applications: PCIe Cards, Storage Interfaces and DC Fans
  10. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
        1. 12.1.1.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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7.5 Electrical Characteristics

(Test conditions unless otherwise noted) –40°C ≤ TJ ≤ 125°C, VIN = 12 V for TPS259804x/7x, 5 V for TPS259803x, 3.3 V for TPS259802x, VEN/UVLO = 2 V, RILIM = 1650 Ω , CdVdT = Open, OUT = Open. All voltages referenced to GND. 
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY (IN)
VIN Input Voltage Range 2.7 24 V
IQ IN Quiescent Current VEN ≥ VUVLO(R) 800 1200 µA
ISD IN Shutdown Current VSD < VEN < VUVLO 204 300 µA
VEN < VSD 3.67 20 µA
VUVP IN Undervoltage Protection Threshold VIN Rising 2.46 2.53 2.6 V
VIN Falling 2.35 2.42 2.49 V
OVERVOLTAGE PROTECTION (IN)
VOVP(R) Overvoltage Protection Threshold TPS259802x, VIN Rising 3.62 3.7 3.76 V
TPS259803x, VIN Rising 7.39 7.6 7.76 V
TPS259804x, VIN Rising 16.32 16.9 17.31 V
VOVP(F) TPS259802x, VIN Falling 3.52 3.6 3.66 V
TPS259803x, VIN Falling 7.22 7.4 7.55 V
TPS259804x, VIN Falling 15.80 16.4 16.81 V
OUTPUT CURRENT MONITOR (IMON)
GIMON Current Monitor Gain (IIMON:IOUT) 3 A ≤ IOUT ≤ min(8 A, ILIM) 228.78 246 263.22 µA/A
OUTPUT CURRENT LIMIT (ILIM)
ILIM IOUT Current Limit Threshold RILIM = 773 Ω, TJ = 25 ℃ 1.76 2 2.17 A
RILIM = 773 Ω, TJ = -40 to 125 ℃ 1.53 2 2.43 A
RILIM = 300 Ω, TJ = 25 ℃ 4.75 4.98 5.23 A
RILIM = 300 Ω, TJ = -40 to 125 ℃ 4.36 4.98 5.66 A
RILIM = 182 Ω, TJ = 25 ℃ 7.77 8.13 8.54 A
RILIM = 182 Ω, TJ = -40 to 125 ℃ 7.23 8.13 9.07 A
RILIM = Open 0 A
ICB IOUT Circuit Breaker Threshold During ILIM pin Short to GND Condition (Single point failure) RILIM = Short to GND, TJ = 25 ℃ 20 A
ISC Short-circuit Fast Trip Threshold 210 % ILIM
ON-RESISTANCE (IN - OUT)
RON ON State Resistance TJ = 25 ℃, IOUT = 2 A 3 mΩ
TJ = -40 to 125 ℃, IOUT = 2 A 5 mΩ
ENABLE / UNDERVOLTAGE LOCKOUT (EN/UVLO)
VUVLO(R) EN/UVLO Pin Voltage Threshold VEN Rising 1.18 1.2 1.23 V
VUVLO(F) VEN Falling 1.08 1.1 1.13 V
VSD EN/UVLO Pin Voltage Threshold for Lowest Shutdown Current VEN Falling 0.59 0.8 V
IENLKG EN/UVLO Pin Leakage Current 0.1 µA
POWER GOOD INDICATION (PG)
VPGD PG Pin Low Voltage (PG de-asserted) VIN < VUVP, VEN < VSD, IPG = 26 µA 651 786 mV
VIN = 3.3V, IPG ≤ 5 mA 320 mV
VIN ≥ 5V, IPG ≤ 5 mA 100 mV
IPGLKG PG Pin Leakage Current (PG asserted) PG pulled up to 5 V through 10 kΩ 1.7 µA
RON(PGA) RON When PG is asserted 4.2 mΩ
VPGTHD VIN - VOUT Threshold when PG is de-asserted 0.224 0.326 0.450 V
AUTO-RETRY DELAY INTERVAL (RETRY_DLY)
VRETRY_DLY(R) RETRY_DLY Oscillator Comparator Threshold 1.1 V
VRETRY_DLY(F) 0.35 V
VRETRY_DLY_HYS RETRY_DLY Oscillator Hysteresis 0.65 0.75 0.85 V
IRETRY_DLY RETRY_DLY Pin Bias Current 1.7 2.05 2.5 µA
NUMBER OF AUTO-RETRIES (NRETRY)
VNRETRY(R) NRETRY Oscillator Comparator Threshold 1.1 V
VNRETRY(F) 0.35 V
VNRETRY_HYS NRETRY Oscillator Hysteresis 0.65 0.75 0.85 V
INRETRY NRETRY Pin Bias Current 1.7 2.05 2.5 µA
CURRENT FAULT TIMER (ITIMER)
IITIMER ITIMER Discharge Current ISC > IOUT > ILIM 1.4 2.1 2.8 µA
RITIMER ITIMER Internal Pull-up Resistance IOUT < ILIM 23 kΩ
VINT ITIMER Pin Default Voltage IOUT < ILIM 2.5 V
VITIMER ITIMER Comparator Falling Threshold ISC > IOUT > ILIM, ITIMER Voltage Rising 1.53 V
ΔVITIMER ITIMER Comparator Voltage Threshold Delta ISC > IOUT > ILIM, ITIMER Voltage Falling 0.7 0.98 1.3 V
LDSTRT
VLDSTRT LDSTRT Rising Threshold LDSTRT voltage rising 1.1 1.21 1.3 V
ILDSTRT LDSTRT Charging Current PG asserted 1.7 2.05 2.4 µA
RLDSTRT LDSTRT Internal Pull-down Resistance 31 Ω
RQOD QOD