ZHCSHL0C June   2019  – May 2022 TPS745-Q1

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Pin Configuration and Functions
  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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 TPS745-Q1 Comparison
      2. 7.3.2 Undervoltage Lockout (UVLO)
      3. 7.3.3 Shutdown
      4. 7.3.4 Foldback Current Limit
      5. 7.3.5 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Functional Mode Comparison
      2. 7.4.2 Normal Operation
      3. 7.4.3 Dropout Operation
      4. 7.4.4 Disabled
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjustable Device Feedback Resistors
      2. 8.1.2 Input and Output Capacitor Selection
      3. 8.1.3 Dropout Voltage
      4. 8.1.4 Exiting Dropout
      5. 8.1.5 Reverse Current
      6. 8.1.6 Power Dissipation (PD)
      7. 8.1.7 Power-Good Function
      8. 8.1.8 Feed-Forward Capacitor (CFF)
      9. 8.1.9 Start-Up Sequencing
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Current
        2. 8.2.2.2 Thermal Dissipation
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 接收文档更新通知
    4. 11.4 支持资源
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 术语表
      1.      Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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订购信息

Typical Characteristics

at operating temperature range TJ = 25°C, VIN = VOUT(NOM) + 0.5 V or 1.5 V (whichever is greater), IOUT = 1 mA, VEN = VIN, and CIN = COUT = 1 µF (unless otherwise noted)

GUID-07A1989C-BF78-475B-9BFB-BB833B02A849-low.gif
VOUT = 0.55 V, IOUT = 1 mA
Figure 6-1 Output Voltage vs Ambient Temperature
GUID-0DEE4C5C-17DD-4D40-9C94-13D49916E3A0-low.gif
VOUT = 5 V, IOUT = 1 mA
Figure 6-3 Output Voltage vs Ambient Temperature
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0.65-V, 3.3-V, and 5-V options, IOUT = 1 mA
Figure 6-5 Temperature Drift Histogram (25°C to 150°C)
GUID-D85087F7-55A7-4A5D-840C-9AF0E99FE4D8-low.gif
VOUT = 0.55 V, IOUT = 1 mA
Figure 6-7 0.55-V Line Regulation vs VIN
GUID-15AD6D28-4FD7-4B68-9B5C-3C6DBD1D6B2E-low.gif
Figure 6-9 3.3-V Dropout Voltage vs IOUT
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Figure 6-11 5.5-V Dropout Voltage vs IOUT
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Figure 6-13 IGND vs IOUT
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VOUT = 3.3 V, IOUT = 0 mA
Figure 6-15 IQ vs VIN
GUID-69FDA44D-E31A-4B2B-A765-9A48C638EFF7-low.gif
VIN = 2 V, VOUT = 0.55 V
Figure 6-17 0.55-V Load Regulation vs IOUT
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Figure 6-19 VOUT vs IOUT Pulldown Resistor
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Figure 6-21 IIkg(PG) vs Temperature and PG Pin Voltage
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VIN = 1.5 V, VOUT = 0.55 V
Figure 6-23 VOL(PG) vs PG Pin Sink Current
GUID-1E78C726-1DCF-450F-B7B9-1B708DC7907E-low.gif
B version
Figure 6-25 tPGDH vs Temperature (For TPS746B Only)
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Figure 6-27 VEN(HI) and VEN(LO) vs Temperature
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Figure 6-29 3.3-V VOUT vs IOUT
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VOUT = 3.3 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 6-31 3.3-V Line Transient
GUID-BAA29233-0160-4226-A2C7-9CE1ABA39A16-low.gif
VIN = 2 V, VOUT = 0.55 V, IOUT slew rate = 1 A/µs
Figure 6-33 0.55-V, 1-mA to 500-mA Load Transient
GUID-FB0C5B16-B0ED-4534-8EE0-83E6A0D175D2-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 6-35 VIN Power-Up
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VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 6-37 PSRR vs Frequency and VIN
GUID-17FC1E1A-E22F-41EC-833E-BAC968E059EF-low.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 6-39 PSRR vs Frequency and VIN
GUID-12A7C7E1-AFB3-47E3-AC7B-B457773AA29E-low.gif
IOUT = 500 mA, COUT = 2.2 µF
Figure 6-41 PSRR vs Frequency
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VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 6-43 PSRR vs Frequency and CFF
GUID-45B7B2D3-8957-471B-8719-3E7483D0178C-low.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF, VRMS BW = 10 Hz to 100 kHz
Figure 6-45 Output Spectral Noise Density vs Frequency and IOUT
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VIN = 3.8 V, VOUT = 3.3 V, IOUT = 100 mA, CFF = 0 µF, VRMS BW = 10 Hz to 100 kHz
Figure 6-47 Output Spectral Noise Density vs Frequency and COUT
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VOUT = 3.3 V, IOUT = 1 mA
Figure 6-2 Output Voltage vs Ambient Temperature
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0.65-V, 3.3-V, and 5-V options, IOUT = 1 mA
Figure 6-4 Temperature Drift Histogram (–40°C to +25°C)
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VOUT = 3.3 V, IOUT = 1 mA
Figure 6-6 3.3-V Line Regulation vs VIN
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VOUT = 5.5 V, IOUT = 1 mA
Figure 6-8 5.5-V Line Regulation vs VIN
GUID-B4D9425C-9E66-480C-B16B-3BB994BC9501-low.gif
Figure 6-10 0.55-V Dropout Voltage vs IOUT
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IOUT = 500 mA
Figure 6-12 VDO vs VOUT
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VEN = 0 V
Figure 6-14 ISHDN vs VIN
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VIN = 3.8 V, VOUT = 3.3 V
Figure 6-16 3.3-V Load Regulation vs IOUT
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VIN = 6 V, VOUT = 5.5 V
Figure 6-18 5.5-V Load Regulation vs IOUT
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Figure 6-20 PGLTH and PGHTH vs Temperature
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VIN = 3.8 V, VOUT = 3.3 V
Figure 6-22 VOL(PG) vs PG Pin Sink Current
GUID-01B02F53-978A-4FA8-A745-088F6189CD7E-low.gif
 
Figure 6-24 tPGDH vs Temperature
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Figure 6-26 tPGDL vs Temperature
GUID-BF9E1012-6CDF-4BCC-8227-EE5E398E3A0B-low.gif
VEN = 5.5 V
Figure 6-28 IEN vs VIN
GUID-B1CDC2C2-966A-4363-A916-1ECA19638753-low.gif
VOUT = 0.55 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 6-30 0.55-V Line Transient
GUID-5F67490C-A18A-42E5-9FBC-BB2152A48B55-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT slew rate = 1 A/µs
Figure 6-32 3.3-V, 1-mA to 500-mA Load Transient
GUID-8A0216C1-AE09-4A44-91F3-FB73883B3336-low.gif
VIN = 5.5 V, VOUT = 5 V, IOUT slew rate = 1 A/µs
Figure 6-34 5-V, 1-mA to 500-mA Load Transient
GUID-D09F5568-6F50-4A6F-A697-E537C8BACD46-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 6-36 Start-Up With EN
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VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 6-38 PSRR vs Frequency and VIN
GUID-4125A3B3-28D7-4986-AC15-9EE7C79C0809-low.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 6-40 PSRR vs Frequency and VIN
GUID-BE5C6805-CD8E-4DC4-8DD6-FEC4D7FE3757-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 6-42 PSRR vs Frequency and COUT
GUID-CB87CAEE-1375-4011-A7EA-2A40F5284E97-low.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF
Figure 6-44 PSRR vs Frequency and ILOAD
GUID-5948C06C-026A-4DDA-87F9-351B41D48804-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF, VRMS BW = 10 Hz to 100 kHz
Figure 6-46 Output Spectral Noise Density vs Frequency and CFF
GUID-F492157F-3B4D-430F-A906-D8A6B692D9AE-low.gif
IOUT = 500 mA, COUT = 2.2 µF, VRMS BW = 10 Hz to 100 kHz
 
Figure 6-48 Output Spectral Noise Density vs Frequency