ZHCSHM2C June   2018  – May 2022 TPS746-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 Undervoltage Lockout (UVLO)
      2. 7.3.2 Shutdown
      3. 7.3.3 Foldback Current Limit
      4. 7.3.4 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 Curve
  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-68F14633-AE73-417E-B158-E24EC44B1E53-low.gif
VOUT = 3.3 V, IOUT = 1 mA
Figure 6-1 3.3-V Line Regulation vs VIN
GUID-298FA8F9-189C-4010-82FE-51BD4E1290E3-low.gif
VOUT = 5.5 V, IOUT = 1 mA
Figure 6-3 5.5-V Line Regulation vs VIN
GUID-E343FE82-7315-40FC-B00A-417E3E67C786-low.gif
 
Figure 6-5 0.55-V Dropout Voltage vs IOUT
GUID-8AF79561-17A4-4618-B6E6-EB127CBF2A84-low.gif
IOUT = 1 A
Figure 6-7 VDO vs VOUT
GUID-5DBC97AC-B842-4472-A571-B2DF7F34E01E-low.gif
VEN = 0 V
Figure 6-9 ISHDN vs VIN
GUID-3F0226C6-7A4E-4687-A800-C0E814F5524B-low.gif
VIN = 3.8 V, VOUT = 3.3 V
Figure 6-11 3.3-V Load Regulation vs IOUT
GUID-7174ED17-A997-40AA-A20F-F49695CB908C-low.gif
VIN = 6 V, VOUT = 5 V
Figure 6-13 5-V Load Regulation vs IOUT
GUID-0C87177C-64DB-4079-B3AF-8DFDDD38B9D8-low.gif
 
Figure 6-15 PGLTH and PGHTH vs Temperature
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VIN = 3.8 V, VOUT = 3.3 V
Figure 6-17 VOL(PG) vs PG Pin Sink Current
GUID-1E78C726-1DCF-450F-B7B9-1B708DC7907E-low.gif
 
Figure 6-19 tPGDH vs Temperature (For TPS746B Only)
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Figure 6-21 VEN(HI) and VEN(LO) vs Temperature
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Figure 6-23 3.3-V Foldback Current Limit vs IOUT
GUID-85944DC4-A826-486E-8211-C65B034F5895-low.gif
VOUT = 3.3 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 6-25 3.3-V Line Transient
GUID-EF4D80A8-00D9-42F3-9C60-C3DD370D92D4-low.gif
VOUT = 5 V, VIN = 5.5 V, IOUT slew rate = 1 A/µs
Figure 6-27 1-mA to 1-A Load Transient (5 V)
GUID-FB0C5B16-B0ED-4534-8EE0-83E6A0D175D2-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 6-29 VIN Power-Up
GUID-FA2502D9-43BA-4260-8E7D-0967A6166DCB-low.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 6-31 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 6-33 PSRR vs Frequency and VIN
GUID-12A7C7E1-AFB3-47E3-AC7B-B457773AA29E-low.gif
IOUT = 500 mA, COUT = 2.2 µF
Figure 6-35 PSRR vs Frequency
GUID-BE5C6805-CD8E-4DC4-8DD6-FEC4D7FE3757-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 6-37 PSRR vs Frequency and COUT
GUID-EBAE8D7C-7D15-4053-BB39-8B052011E547-low.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF
 
Figure 6-39 PSRR vs Frequency and ILOAD
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 6-41 Output Spectral Noise Density vs Frequency and IOUT
GUID-01FEF41B-8114-4279-B0F0-B1CA65ED0F20-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 100 mA, CFF = 0 µF, VRMS BW = 10 Hz to 100 kHz
Figure 6-43 Output Spectral Noise Density vs Frequency and COUT
GUID-D85087F7-55A7-4A5D-840C-9AF0E99FE4D8-low.gif
VOUT = 0.55 V, IOUT = 1 mA
Figure 6-2 0.55-V Line Regulation vs VIN
GUID-5DF276B9-A343-4A0C-8733-339766111B57-low.gif
 
Figure 6-4 3.3-V Dropout Voltage vs IOUT
GUID-31D0F8EA-E18A-4A25-B478-80D9E708699B-low.gif
 
Figure 6-6 5.5-V Dropout Voltage vs IOUT
GUID-C43EAA59-F7D0-400D-8B62-67D4BAD21CE4-low.gif
 
Figure 6-8 IGND vs IOUT
GUID-B80EDBF4-FCB5-4A1E-BD86-90EBE7956B5D-low.gif
VOUT = 3.3 V, IOUT = 0 mA
Figure 6-10 IGND vs VIN
GUID-7DCD75CA-642C-4FF0-8891-89FE35D19876-low.gif
VIN = 2 V, VOUT = 0.55 V
Figure 6-12 0.55-V Load Regulation vs IOUT
GUID-58A3BAC2-2772-4496-A2D3-DE388BB58644-low.gif
 
Figure 6-14 VOUT vs IOUT Pulldown Resistor
GUID-0F3231F8-E37A-4F9B-AC4A-0E3E9035BEFF-low.gif
 
Figure 6-16 IIkg(PG) vs Temperature and PG Pin Voltage
GUID-01B02F53-978A-4FA8-A745-088F6189CD7E-low.gif
 
Figure 6-18 tPGDH vs Temperature
GUID-5F239EDB-698F-4831-A66F-9445D6D62AEE-low.gif
 
Figure 6-20 tPGDL vs Temperature
GUID-BF9E1012-6CDF-4BCC-8227-EE5E398E3A0B-low.gif
VEN = 5.5 V
Figure 6-22 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 6-24 0.55-V Line Transient
GUID-4A111DE9-F753-4619-9CF9-B126A3B14B6F-low.gif
VOUT = 0.55 V, VIN = 2 V, IOUT slew rate = 1 A/µs
Figure 6-26 1-mA to 1-A Load Transient (0.55 V)
GUID-6AD1DDE5-A740-420C-BB16-113AC72A1066-low.gif
VOUT = 3.3 V, VIN = 3.8 V, IOUT slew rate = 1 A/µs
Figure 6-28 1-mA to 1-A Load Transient (3.3 V)
GUID-D09F5568-6F50-4A6F-A697-E537C8BACD46-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 6-30 Startup With EN
GUID-0F8FD331-6CD2-4474-8729-7564ACED6A6D-low.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 6-32 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 6-34 PSRR vs Frequency and VIN
GUID-265264C1-D5FE-4005-989E-5B9416CB32D7-low.gif
IOUT = 1 A, COUT = 2.2 µF
Figure 6-36 PSRR vs Frequency
GUID-FCBD8027-3C41-4F2B-BACB-66FBD041F934-low.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 6-38 PSRR vs Frequency and CFF
GUID-3D755697-0B3A-4C33-9EB1-8D9B2BFD3023-low.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 4.7 µF, VRMS BW = 10 Hz to 100 kHz
Figure 6-40 Output Spectral Noise Density vs Frequency and IOUT
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 6-42 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 6-44 Output Spectral Noise Density vs Frequency