ZHCSHZ6A April   2018  – December 2018 TPS746

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     Device Images
      1.      典型应用
  4. 修订历史记录
  5. Pin Configuration and Functions
    1.     Pin 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 Diagram
    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
    2. 8.2 Feed-Forward Capacitor (CFF)
    3. 8.3 Typical Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
        1. 8.3.2.1 Input Current
        2. 8.3.2.2 Thermal Dissipation
      3. 8.3.3 Application Curve
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 术语表
  12. 12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

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)
TPS746 D041-SBVS337.gif
VOUT = 3.3 V, IOUT = 1 mA
Figure 1. 3.3-V Line Regulation vs VIN
TPS746 D053-SBVS337.gif
VOUT = 5.5 V, IOUT = 1 mA
Figure 3. 5.5-V Line Regulation vs VIN
TPS746 D006-SBVS337.gif
Figure 5. 0.55-V Dropout Voltage vs IOUT
TPS746 D021-SBVS337.gif
IOUT = 1 A
Figure 7. VDO vs VOUT
TPS746 D002-SBVS337.gif
VEN = 0 V
Figure 9. ISHDN vs VIN
TPS746 D039-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V
Figure 11. 3.3-V Load Regulation vs IOUT
TPS746 D055-SBVS337.gif
VIN = 6 V, VOUT = 5.5 V
Figure 13. 5-V Load Regulation vs IOUT
TPS746 D044-SBVS337.gif
Figure 15. PGLTH and PGHTH vs Temperature
TPS746 D045-SBVS337.gif
Figure 17. VOL(PG) vs PG Pin Sink Current
TPS746 D059-SBVS337.gif
Figure 19. tPGDH vs Temperature (For TPS746B Only)
TPS746 D000-SBVS337.gif
Figure 21. VEN(HI) and VEN(LO) vs Temperature
TPS746 D010-SBVS337.gif
Figure 23. 3.3-V Foldback Current Limit vs IOUT
TPS746 D012-SBVS337.gif
VOUT = 3.3 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 25. 3.3-V Line Transient
TPS746 D014-SBVS337.gif
VOUT = 5 V, VIN = 5.5 V, IOUT slew rate = 1 A/µs
Figure 27. 1-mA to 1-A Load Transient (5 V)
TPS746 D016-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 29. VIN Power-Up
TPS746 D022-SBVS337.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 31. PSRR vs Frequency and VIN
TPS746 D025-SBVS337.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 33. PSRR vs Frequency and VIN
TPS746 D026-SBVS337.gif
IOUT = 500 mA, COUT = 2.2 µF
Figure 35. PSRR vs Frequency
TPS746 D028-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 37. PSRR vs Frequency and COUT
TPS746 D031-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF
Figure 39. PSRR vs Frequency and ILOAD
TPS746 D033-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF,
VRMS BW = 10 Hz to 100 kHz
Figure 41. Output Spectral Noise Density
TPS746 D035-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 100 mA, CFF = 0 µF,
VRMS BW = 10 Hz to 100 kHz
Figure 43. Output Spectral Noise Density vs
Frequency and COUT
TPS746 D004-SBVS337.gif
VOUT = 0.55 V, IOUT = 1 mA
Figure 2. 0.55-V Line Regulation vs VIN
TPS746 D038-SBVS337.gif
Figure 4. 3.3-V Dropout Voltage vs IOUT
TPS746 D051-SBVS337.gif
Figure 6. 5.5-V Dropout Voltage vs IOUT
TPS746 D008-SBVS337.gif
Figure 8. IGND vs IOUT
TPS746 D056-SBVS337.gif
VOUT = 3.3 V, IOUT = 0 mA
Figure 10. IQ vs VIN
TPS746 D005-SBVS337.gif
VIN = 2 V, VOUT = 0.55 V
Figure 12. 0.55-V Load Regulation vs IOUT
TPS746 D046-SBVS337.gif
Figure 14. VOUT vs IOUT Pulldown Resistor
TPS746 D009-SBVS337.gif
Figure 16. IIkg(PG) vs Temperature and PG Pin Voltage
TPS746 D058-SBVS337.gif
Figure 18. tPGDH vs Temperature
TPS746 D060-SBVS337.gif
Figure 20. tPGDL vs Temperature
TPS746 D007-SBVS337.gif
VEN = 5.5 V
Figure 22. IEN vs VIN
TPS746 D011-SBVS337.gif
VOUT = 0.55 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 24. 0.55-V Line Transient
TPS746 D013-SBVS337.gif
VOUT = 0.55 V, VIN = 2 V, IOUT slew rate = 1 A/µs
Figure 26. 1-mA to 1-A Load Transient (0.55 V)
TPS746 D015-SBVS337.gif
VOUT = 3.3 V, VIN = 3.8 V, IOUT slew rate = 1 A/µs
Figure 28. 1-mA to 1-A Load Transient (3.3 V)
TPS746 D018-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 30. Startup With EN
TPS746 D023-SBVS337.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 32. PSRR vs Frequency and VIN
TPS746 D024-SBVS337.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 34. PSRR vs Frequency and VIN
TPS746 D027-SBVS337.gif
IOUT = 1 A, COUT = 2.2 µF
Figure 36. PSRR vs Frequency
TPS746 D029-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 38. PSRR vs Frequency and CFF
TPS746 D032-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 4.7 µF,
VRMS BW = 10 Hz to 100 kHz
Figure 40. Output Spectral Noise Density
TPS746 D034-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF,
VRMS BW = 10 Hz to 100 kHz
Figure 42. Output Spectral Noise Density vs
Frequency and CFF
TPS746 D042-SBVS337.gif
IOUT = 500 mA, COUT = 2.2 µF, VRMS BW = 10 Hz to 100 kHz
Figure 44. Output Spectral Noise Density vs Frequency