ZHCSHI4D January   2018  – December 2019 TPS25221

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Over-current Conditions
      2. 9.3.2 Fault Response
      3. 9.3.3 Undervoltage Lockout (UVLO)
      4. 9.3.4 Enable, (EN)
      5. 9.3.5 Thermal Sense
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 Programming the Current-Limit Threshold
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Constant-Current
    2. 10.2 Typical Applications
      1. 10.2.1 Two-Level Current-Limit Circuit
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedures
          1. 10.2.1.2.1 Designing Above a Minimum Current Limit
          2. 10.2.1.2.2 Designing Below a Maximum Current Limit
          3. 10.2.1.2.3 Accounting for Resistor Tolerance
          4. 10.2.1.2.4 Input and Output Capacitance
        3. 10.2.1.3 Application Curve
      2. 10.2.2 Auto-Retry Functionality
        1. 10.2.2.1 Design Requirements (added)
        2. 10.2.2.2 Detailed Design Procedure
      3. 10.2.3 Typical Application as USB Power Switch
        1. 10.2.3.1 Design Requirements
          1. 10.2.3.1.1 USB Power-Distribution Requirements
        2. 10.2.3.2 Detailed Design Procedure
          1. 10.2.3.2.1 Universal Serial Bus (USB) Power-Distribution Requirements
  11. 11Power Supply Recommendations
    1. 11.1 Self-Powered and Bus-Powered Hubs
    2. 11.2 Low-Power Bus-Powered and High-Power Bus-Powered Functions
    3. 11.3 Power Dissipation and Junction Temperature
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 第三方米6体育平台手机版_好二三四免责声明
    2. 13.2 文档支持
      1. 13.2.1 相关文档
    3. 13.3 接收文档更新通知
    4. 13.4 社区资源
    5. 13.5 商标
    6. 13.6 静电放电警告
    7. 13.7 Glossary
  14. 14机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.5 Electrical Characteristics

over recommended operating conditions, VEN = VIN, RFAULT = 10 kΩ (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SWITCH
rDS(on) Static drain-source on-state resistance DBV package, TJ = 25°C 70 80 mΩ
DBV package, –40°C ≤TJ ≤125°C 110
DRV package, TJ = 25°C 70 92
DRV package, –40°C ≤TJ ≤125°C 122
r Rise time, output VIN = 5.5 V CL = 1 µF, RL = 100 Ω,
(see Figure 1)		 0.55 0.95 ms
VIN = 2.5 V 0.35 0.62
tf Fall time, output VIN = 5.5 V 0.24 0.3
VIN = 2.5 V 0.22 0.28
ENABLE INPUT EN OR EN
Enable pin turn on/off threshold 0.8 1.6 V
IEN Input current VEN = 0 V or 5.5 V -0.5 0 0.5 µA
ton Turnon time CL = 1 µF, RL = 100 Ω, (see Figure 2 ) 3 ms
toff Turnoff time CL = 1 µF, RL = 100 Ω, (see Figure 2) 0.7 ms
CURRENT LIMIT
IOS Current-limit threshold (Maximum DC output current IOUT delivered to load) and Short-circuit current, OUT connected to GND RILIM = 20 kΩ TJ = 25°C 2585 2720 2850 mA
–40°C ≤TJ ≤125°C 2560 2880
RILIM = 30 kΩ TJ = 25°C 1710 1820 1930
–40°C ≤TJ ≤125°C 1700 1945
RILIM = 80 kΩ TJ = 25°C 630 690 755
–40°C ≤TJ ≤125°C 610 790
RILIM = 210 kΩ TJ = 25°C 220 275 330
–40°C ≤TJ ≤125°C 210 370
tIOS Response time to short circuit VIN = 5 V (see Figure 4) 1.5 µs
SUPPLY CURRENT
ISD Supply current, switch disable VIN = 5.5 V, No load on OUT, VEN = 0 V,RILIM = 20 kΩ 0.02 0.5 µA
ISE Supply current, switch enable VIN = 5.5 V, No load on OUT ,RILIM = 20 kΩ 75 90 µA
UNDERVOLTAGE LOCKOUT
UVLO Low-level input voltage, IN VIN rising 2.37 2.47 V
Hysteresis, IN TJ = 25 °C 45 mV
FAULT FLAG
VOL Output low voltage, FAULT I/FAULT = 1 mA 180 mV
Off-state leakage V/FAULT = 5.5 V 0.5 µA
FAULT deglitch FAULT assertion or de-assertion due to overcurrent condition 6 8 12 ms
THERMAL SHUTDOWN
Thermal shutdown threshold 165 °C
Thermal shutdown threshold in current-limit 145 °C
Hysteresis 20 °C
TPS25221 slvsdt3_power_on_and_off_timing.gifFigure 1. Power-On and Off Timing
TPS25221 slvsdt3_enable_timing_active_high_enable.gifFigure 2. Enable Timing, Active High Enable
TPS25221 slvsdt3_enable_timing_active_low_enable.gifFigure 3. Enable Timing, Active Low Enable
TPS25221 slvsdt3_output_short_circuit_parameters.gifFigure 4. Output Short Circuit Parameters
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