SBVS326A April   2018  – December 2018 TPS745

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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. 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. 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)
    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. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.7 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)
TPS745 D041-SBVS337.gif
VOUT = 3.3 V, IOUT = 1 mA
Figure 1. 3.3-V Line Regulation vs VIN
TPS745 D053-SBVS337.gif
VOUT = 5.5 V, IOUT = 1 mA
Figure 3. 5.5-V Line Regulation vs VIN
TPS745 D050-SBVS337.gif
Figure 5. 0.55-V Dropout Voltage vs IOUT
TPS745 D020-SBVS337.gif
IOUT = 500 mA
Figure 7. VDO vs VOUT
TPS745 D002-SBVS337.gif
VEN = 0 V
Figure 9. ISHDN vs VIN
TPS745 D040-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V
Figure 11. 3.3-V Load Regulation vs IOUT
TPS745 D054-SBVS337.gif
VIN = 6 V, VOUT = 5.5 V
Figure 13. 5-V Load Regulation vs IOUT
TPS745 D044-SBVS337.gif
Figure 15. PGLTH and PGHTH vs Temperature
TPS745 D045-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V
Figure 17. VOL(PG) vs PG Pin Sink Current
TPS745 D058-SBVS337.gif
Figure 19. tPGDH vs Temperature
TPS745 D000-SBVS337.gif
Figure 21. VEN(HI) and VEN(LO) vs Temperature
TPS745 D036-SBVS337.gif
Figure 23. 3.3-V Foldback Current Limit vs IOUT
TPS745 D012-SBVS337.gif
VOUT = 3.3 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 25. 3.3-V Line Transient
TPS745 D062-SBVS337.gif
VIN = 2 V, VOUT = 0.55 V, IOUT slew rate = 1 A/µs
Figure 27. 0.55-V, 1-mA to 500-mA Load Transient
TPS745 D016-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 29. VIN Power-Up
TPS745 D022-SBVS337.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 31. PSRR vs Frequency and VIN
TPS745 D025-SBVS337.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 33. PSRR vs Frequency and VIN
TPS745 D026-SBVS337.gif
IOUT = 500 mA, COUT = 2.2 µF
Figure 35. PSRR vs Frequency
TPS745 D029-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 37. PSRR vs Frequency and CFF
TPS745 D033-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF,
VRMS BW = 10 Hz to 100 kHz
Figure 39. Output Spectral Noise Density
TPS745 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 41. Output Spectral Noise Density vs
Frequency and COUT
TPS745 D004-SBVS337.gif
VOUT = 0.55 V, IOUT = 1 mA
Figure 2. 0.55-V Line Regulation vs VIN
TPS745 D037-SBVS337.gif
Figure 4. 3.3-V Dropout Voltage vs IOUT
TPS745 D052-SBVS337.gif
Figure 6. 5.5-V Dropout Voltage vs IOUT
TPS745 D048-SBVS337.gif
Figure 8. IGND vs IOUT
TPS745 D056-SBVS337.gif
VOUT = 3.3 V, IOUT = 0 mA
Figure 10. IQ vs VIN
TPS745 D047-SBVS337.gif
VIN = 2 V, VOUT = 0.55 V
Figure 12. 0.55-V Load Regulation vs IOUT
TPS745 D046-SBVS337.gif
Figure 14. VOUT vs IOUT Pulldown Resistor
TPS745 D009-SBVS337.gif
Figure 16. IIkg(PG) vs Temperature and PG Pin Voltage
TPS745 D064-SBVS337.gif
VIN = 1.5 V, VOUT = 0.55 V
Figure 18. VOL(PG) vs PG Pin Sink Current
TPS745 D060-SBVS337.gif
Figure 20. tPGDL vs Temperature
TPS745 D007-SBVS337.gif
1.
VEN = 5.5 V
Figure 22. IEN vs VIN
TPS745 D011-SBVS337.gif
VOUT = 0.55 V, IOUT = 1 mA, VIN slew rate = 1 V/µs
Figure 24. 0.55-V Line Transient
TPS745 D049-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT slew rate = 1 A/µs
Figure 26. 3.3-V, 1-mA to 500-mA Load Transient
TPS745 D063-SBVS337.gif
A.
VIN = 5.5 V, VOUT = 5 V, IOUT slew rate = 1 A/µs
Figure 28. 5-V, 1-mA to 500-mA Load Transient
TPS745 D018-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 1 mA
Figure 30. Startup With EN
TPS745 D023-SBVS337.gif
VOUT = 3.3 V, IOUT = 500 mA, COUT = 2.2 µF
Figure 32. PSRR vs Frequency and VIN
TPS745 D024-SBVS337.gif
VOUT = 3.3 V, IOUT = 250 mA, COUT = 2.2 µF
Figure 34. PSRR vs Frequency and VIN
TPS745 D028-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, IOUT = 500 mA
Figure 36. PSRR vs Frequency and COUT
TPS745 D030-SBVS337.gif
VIN = 3.8 V, VOUT = 3.3 V, COUT = 2.2 µF
Figure 38. PSRR vs Frequency and ILOAD
TPS745 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 40. Output Spectral Noise Density vs
Frequency and CFF
TPS745 D042-SBVS337.gif
IOUT = 500 mA, COUT = 2.2 µF, VRMS BW = 10 Hz to 100 kHz
Figure 42. Output Spectral Noise Density vs Frequency