ZHCSIQ0F August   2018  – August 2020 TPS2120 , TPS2121

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     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. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Input Settling Time and Output Soft Start Control (SS)
        1. 9.3.1.1 Slew Rate vs. CSS Capacitor
      2. 9.3.2 Active Current Limiting (ILM)
      3. 9.3.3 Short-Circuit Protection
      4. 9.3.4 Thermal Protection (TSD)
      5. 9.3.5 Overvoltage Protection (OVx)
      6. 9.3.6 Fast Reverse Current Blocking (RCB)
      7. 9.3.7 Output Voltage Dip and Fast Switchover Control (TPS2121 only)
      8. 9.3.8 Input Voltage Comparator (VCOMP)
    4. 9.4 TPS2120 Device Functional Modes
    5. 9.5 TPS2121 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Manual Switchover Schematic
      2. 10.2.2 Design Requirements
      3. 10.2.3 Detailed Design Description
      4. 10.2.4 Design Procedure
        1. 10.2.4.1 Selecting PR1 and CP2 Resistors
        2. 10.2.4.2 Selecting OVx Resistors
        3. 10.2.4.3 Selecting Soft-Start Capacitor and Current Limit Resistors
      5. 10.2.5 Application Curves
    3. 10.3 Automatic Switchover with Priority (XCOMP)
      1. 10.3.1 Application Schematic
      2. 10.3.2 Design Requirements
      3. 10.3.3 Detailed Design Description
      4. 10.3.4 Design Procedure
        1. 10.3.4.1 Selecting PR1 and CP2 Resistors
      5. 10.3.5 Application Curves
    4. 10.4 Automatic Seamless Switchover with Priority (XREF)
      1. 10.4.1 Application Schematic
      2. 10.4.2 Design Requirements
      3. 10.4.3 Detailed Design Description
      4. 10.4.4 Application Curves
    5. 10.5 Highest Voltage Operation (VCOMP)
      1. 10.5.1 Application Schematic
      2. 10.5.2 Design Requirements
      3. 10.5.3 Detailed Design Description
      4. 10.5.4 Detailed Design Procedure
      5. 10.5.5 Application Curves
    6. 10.6 Reverse Polarity Protection with TPS212x
    7. 10.7 Hotplugging with TPS212x
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Links
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 静电放电警告
    6. 13.6 术语表
  14. 14Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • RUX|12
散热焊盘机械数据 (封装 | 引脚)
订购信息

Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSTJMINTYPMAXUNIT
INPUT SOURCE (IN1, IN2)
IQ, INxQuiescent Current
(INx Powering OUT) (1)
OUT = Open-40°C to 125°C300400µA
ISBY, INxStandby Current
(INx not powering OUT)(1)
VOUT = VINx 25°C01525µA
-40°C to 125°C25µA
ILK, INxLeakage Current
(INx to OUT)
|VINx - VOUT| ≤ 5V25°C-11µA
-40°C to 85°C-55µA
-40°C to 125°C-8080µA
|VINx - VOUT| ≤ 22V25°C-11µA
-40°C to 85°C-3535µA
-40°C to 125°C-500500µA
VUV, INxUndervoltage LockoutVINx Rising-40°C to 125°C2.52.652.8V
VINx Falling-40°C to 125°C2.42.552.7V
OUTPUT SWITCHOVER (OUT)
tSWSwitchover TimeVOUT < VINx
CP2 or SEL < VREF
-40°C to 125°C100µs
tFSWFast Switchover Time
(TPS2121 only)
VOUT < VINx
CP2 ≥ VREF
-40°C to 125°C5µs
VCOMPInput Voltage Comparator
(VIN2 referenced to VIN1)
VIN1 ≥ VIN2-40°C to 125°C0280600mV
VIN1 > VIN2, Falling Hysteresis-40°C to 125°C2.53.54.5%
ON-RESISTANCE (INx to OUT)
RONON-State Resistance (TPS2120)IOUT = -200 mA
VPRI > VREF
VINx ≥ 5.0 V
25°C6275
-40°C to 85°C90
-40°C to 105°C100
-40°C to 125°C120
ON-State Resistance (TPS2121)IOUT = -200 mA
VPRI > VREF
VINx ≥ 5.0 V
25°C5670
-40°C to 85°C85
-40°C to 105°C90
-40°C to 125°C100
CURRENT LIMIT (ILM)
ILM (2)Output Current Limit (TPS2120)RILM = 31.6kΩ-40°C to 125°C33.54A
RILM = 46.4kΩ-40°C to 125°C22.53A
RILM = 85kΩ-40°C to 125°C11.52A
RILM < 1kΩ-40°C to 125°C1.52.53.5A
Output Current Limit (TPS2121)RILM = 18.7kΩ-40°C to 125°C4.65.25.8A
RILM = 22.1kΩ-40°C to 125°C44.55A
RILM = 29.8kΩ-40°C to 125°C33.54A
RILM = 44.2kΩ-40°C to 125°C22.53A
RILM = 80kΩ-40°C to 125°C11.52A
RILM < 1kΩ-40°C to 125°C1.52.53.5A
tLM (3)Current Limit Response TimeOutput Steady State-40°C to 125°C250µs
CONTROL PINS (PRI, SEL, OV1, OV2)
VREF, xInternal Voltage ReferenceVPR1, VCP2, VOV1, VOV2 Rising-40°C to 125°C1.011.061.1V
VPR1, VCP2, VOV1, VOV2 Falling-40°C to 125°C0.991.041.09V
VOFSTComparator Offset Voltage
(TPS2121 only)
VPR1 > VREF
VCP2 > VREF
-40°C to 125°C52040mV
ILK, xPin Leakage CurrentVPR1, VCP2, VOV1, VOV2 = 0 V to 5.5 V-40°C to 125°C-0.10.1µA
STATUS INDICATION PIN (ST)
ILK, STPin LeakageVST = 0 V to 5.5 V-40°C to 125°C-0.10.1µA
tSTStatus DelayL to H-40°C to 125°C1µs
FAST REVERSE CURRENT BLOCKING (RCB)
IRCBFast Reverse Current Detection ThresholdVOUT > VINx-40°C to 125°C0.212A
VRCBRCB Release VoltageVOUT > VINx-40°C to 125°C02550mV
tRCBFast Reverse Current Blocking Response Time-40°C to 125°C10µs
THERMAL SHUTDOWN (TSD)
TSDThermal ShutdownShutdownRising160°C
RecoveryFalling150°C