ZHCSOF9B april   2022  – june 2023 TPS25981

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 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
      1.      16
    8. 7.8 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Lockout (UVLO and UVP)
      2. 8.3.2 Overvoltage Lockout (OVLO)
      3. 8.3.3 Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 8.3.3.1 Slew Rate (dVdt) and Inrush Current Control
        2. 8.3.3.2 Circuit-Breaker During Steady-State
        3. 8.3.3.3 Active Current Limiting During Start-Up
        4. 8.3.3.4 Short-Circuit Protection
      4. 8.3.4 Analog Load Current Monitor
      5. 8.3.5 Overtemperature Protection (OTP)
      6. 8.3.6 Fault Response and Indication (FLT)
      7. 8.3.7 Power Good Indication (PG)
      8. 8.3.8 Quick Output Discharge (QOD)
      9. 8.3.9 Reverse Current Blocking FET Driver
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Single Device, Self-Controlled
      2. 9.1.2 Parallel Operation
    2. 9.2 Typical Application
      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 Output Voltage Rise Time (tR)
        3. 9.2.2.3 Setting Overcurrent Threshold (ILIM)
        4. 9.2.2.4 Setting Overcurrent Blanking Interval (tITIMER)
        5. 9.2.2.5 Voltage Drop
      3. 9.2.3 Application Curves
  11. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 接收文档更新通知
    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
  14. 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, OUT = Open, VEN/UVLO = 2 V, VOVLO = 0 V, RILM = 611 Ω , dVdT = Open, ITIMER = Open, FLT = Open, PG = Open. All voltages referenced to GND.
Test Parameter Description MIN TYP MAX UNITS
INPUT SUPPLY (IN)
IQ(ON) IN supply quiescent current 417 610 µA
IQ(OFF) IN supply OFF state current (VSD(F) < VEN < VUVLO(F)) 68 90 µA
ISD IN supply shutdown current (VEN < VSD(F)) 3 25 µA
VUVP(R) IN supply UVP rising threshold 2.44 2.53 2.64 V
VUVP(F) IN supply UVP falling threshold 2.35 2.42 2.55 V
OUTPUT LOAD CURRENT MONITOR (ILM)
GIMON Analog load current monitor gain (IMON : IOUT), IOUT = 1.5 A, IOUT < ILIM 82.9 95.3 107.6 µA/A
Analog load current monitor gain (IMON : IOUT), IOUT = 3 A, IOUT < ILIM 87 95.3 104.5 µA/A
Analog load current monitor gain (IMON : IOUT), IOUT = 4.5 A, IOUT < ILIM 87.6 95.3 103.1 µA/A
Analog load current monitor gain (IMON : IOUT), IOUT = 8 A, IOUT < ILIM 87.7 95.3 102.6 µA/A
Analog load current monitor gain (IMON : IOUT), IOUT = 10 A, IOUT < ILIM 87.8 95.3 102.4 µA/A
OVERCURRENT PROTECTION (OUT)
ILIM Overcurrent threshold, RILM = 3320 Ω 1.72 1.99 2.26 A
Overcurrent threshold, RILM = 2212 Ω 2.64 2.98 3.32 A
Overcurrent threshold, RILM = 1102 kΩ 5.43 5.98 6.52 A
Overcurrent threshold, RILM = 750 Ω 7.95 8.73 9.52 A
Overcurrent threshold, RILM = 611 Ω 9.8 10.76 11.73 A
ISPFLT Circuit-Breaker threshold, ILM pin open (Single point failure) 0.1 A
ISPFLT Circuit-Breaker threshold, ILM pin shorted to GND (Single point failure) 2.24 3.3 A
IFT Fixed fast-trip current threshold 39.5 A
ISCGain Scalable fast-trip threshold (ISC) : ILIM ratio  170 193 242 %
VFB VOUT threshold to exit current limit foldback 1.55 1.91 2.23 V
ON RESISTANCE (IN - OUT)
RON 2.7 ≤ VIN ≤ 4 V, IOUT = 3 A, TJ = 25℃ 6.07 mΩ
4 < VIN ≤ 16 V, IOUT = 3 A, TJ = 25℃ 5.81 mΩ
2.7 ≤ VIN ≤ 16 V, IOUT = 3 A, –40℃ ≤ TJ ≤ 125℃ 8.4 mΩ
ENABLE/UNDERVOLTAGE LOCKOUT (EN/UVLO)
VUVLO(R) EN/UVLO rising threshold 1.176 1.20 1.224 V
VUVLO(F) EN/UVLO falling threshold 1.073 1.09 1.116 V
VSD(F) EN/UVLO falling threshold for lowest shutdown current 0.45 0.75 V
IENLKG EN/UVLO pin leakage current –0.1 0.1 µA
OVERVOLTAGE LOCKOUT (EN/OVLO) 
VOV(R) OVLO rising threshold 1.176 1.20 1.224 V
VOV(F) OVLO falling threshold 1.074 1.09 1.116 V
IOVLKG OVLO pin leakage current (0.5 V < VOVLO < 1.5 V) –0.1 0.1 µA
OVERCURRENT FAULT TIMER (ITIMER)
IITIMER ITIMER pin internal discharge current, IOUT > ILIM 1.25 2 2.72 µA
RITIMER ITIMER pin internal pullup resistance 15.4 kΩ
VINT ITIMER pin internal pullup voltage 2.1 2.57 2.74 V
VITIMER(F) ITIMER comparator threshold, IOUT > ILIM 0.6 1.06 1.37 V
ΔVITIMER ITIMER discharge differential voltage threshold, IOUT > ILIM 1.28 1.51 1.74 V
POWER GOOD INDICATION (PG)
VPGD PG pin voltage while de-asserted. VIN < VUVP(F), VEN < VSD(F), Weak pullup (IPG = 26 μA) 0.66 0.80 V
PG pin voltage while de-asserted. VIN < VUVP(F), VEN < VSD(F), Strong pullup (IPG = 242 μA) 0.78 0.90 V
PG pin voltage while de-asserted, VIN > VUVP(R) 0 0.60 V
IPGLKG PG pin leakage current, PG asserted 3 µA
RFLTB FLT pin internal pulldown resistance 12.57 Ω
FAULT INDICATION (FLT)
IFLTLKG FLT pin leakage current –1 1 µA
OVERTEMPERATURE PROTECTION (OTP)
TSD Thermal Shutdown rising threshold, TJ↑ 154 °C
TSDHYS Thermal Shutdown hysteresis, TJ↓ 10 °C
DVDT
IdVdt dVdt pin internal charging current 1.4 3.45 5.7 µA
QUICK OUTPUT DISCHARGE (OUT)
RQOD Quick Output Discharge Resistance, VEN < VUVLO(F) 455 488 530 Ω