SBVS291C April   2017  – December 2020 TPS7A84A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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: General
    6. 6.6 Electrical Characteristics: TPS7A8400A
    7. 6.7 Electrical Characteristics: TPS7A8401A
    8. 6.8 Typical Characteristics: TPS7A8400A
    9. 6.9 Typical Characteristics: TPS7A8401A
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Voltage Regulation Features
        1. 7.3.1.1 DC Regulation
        2. 7.3.1.2 AC and Transient Response
      2. 7.3.2 System Start-Up Features
        1. 7.3.2.1 Programmable Soft Start (NR/SS)
        2. 7.3.2.2 Internal Sequencing
          1. 7.3.2.2.1 Enable (EN)
          2. 7.3.2.2.2 Undervoltage Lockout (UVLO) Control
          3. 7.3.2.2.3 Active Discharge
        3. 7.3.2.3 Power-Good Output (PG)
      3. 7.3.3 Internal Protection Features
        1. 7.3.3.1 Foldback Current Limit (ICL)
        2. 7.3.3.2 Thermal Protection (Tsd)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Regulation
      2. 7.4.2 Disabled
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 External Component Selection
        1. 8.1.1.1 Adjustable Operation
        2. 8.1.1.2 ANY-OUT Programmable Output Voltage
        3. 8.1.1.3 ANY-OUT Operation
        4. 8.1.1.4 Increasing ANY-OUT Resolution for LILO Conditions
        5. 8.1.1.5 Current Sharing
        6. 8.1.1.6 Recommended Capacitor Types
        7. 8.1.1.7 Input and Output Capacitor Requirements (CIN and COUT)
        8. 8.1.1.8 Feed-Forward Capacitor (CFF)
        9. 8.1.1.9 Noise-Reduction and Soft-Start Capacitor (CNR/SS)
      2. 8.1.2 Start-Up
        1. 8.1.2.1 Circuit Soft-Start Control (NR/SS)
          1. 8.1.2.1.1 Inrush Current
        2. 8.1.2.2 Undervoltage Lockout (UVLO)
        3. 8.1.2.3 Power-Good (PG) Function
      3. 8.1.3 AC and Transient Performance
        1. 8.1.3.1 Power-Supply Rejection Ratio (PSRR)
        2. 8.1.3.2 Output Voltage Noise
        3. 8.1.3.3 Optimizing Noise and PSRR
          1. 8.1.3.3.1 Charge Pump Noise
        4. 8.1.3.4 Load Transient Response
      4. 8.1.4 DC Performance
        1. 8.1.4.1 Output Voltage Accuracy (VOUT)
        2. 8.1.4.2 Dropout Voltage (VDO)
          1. 8.1.4.2.1 Behavior When Transitioning From Dropout Into Regulation
      5. 8.1.5 Sequencing Requirements
      6. 8.1.6 Negatively Biased Output
      7. 8.1.7 Reverse Current Protection
      8. 8.1.8 Power Dissipation (PD)
        1. 8.1.8.1 Estimating Junction Temperature
        2. 8.1.8.2 Recommended Area for Continuous Operation (RACO)
    2. 8.2 Typical Applications
      1. 8.2.1 Low-Input, Low-Output (LILO) Voltage Conditions
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  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 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Evaluation Models
        2. 11.1.1.2 Spice Models
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary

Package Options

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

6.9 Typical Characteristics: TPS7A8401A

at TA = 25°C, VIN = 1.4 V or VIN = VOUT(nom) + 0.4 V (whichever is greater), VBIAS = open, VOUT(nom) = 0.5 V, VEN = 1.1 V, CIN = 10 μF, COUT = 47 μF, CNR/SS = 0 nF, no CFF, and PG pin pulled up to VIN with 100 kΩ (unless otherwise noted)

GUID-32E86519-C7C6-41F3-A83C-97900667CE3C-low.gif
VIN = 1.1 V, VBIAS = 5 V, COUT = 47 μF || 10 μF || 10 μF,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-43 PSRR vs Frequency and IOUT
GUID-AB2A3807-DAC1-4263-9C30-E20527FF8F6D-low.gif
VIN = 1.4 V, IOUT = 1 A, COUT = 47 μF || 10 μF || 10 μF,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-45 PSRR vs Frequency and VBIAS
GUID-04B2AB2C-BA5B-4F42-A04C-C43FEFFF1283-low.gif
VIN = VOUT + 0.3 V or VIN = 1.1 V (whichever is greater), VBIAS = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-47 PSRR vs Frequency and VOUT With Bias
GUID-B5E49F9D-AB08-4BBB-91EC-DB95D724CA92-low.gif
VIN = 1.4 V, VBIAS = 5 V, VOUT = 1 V, IOUT = 3 A,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-49 PSRR vs Frequency and COUT
GUID-689EA635-4789-4B45-8B7B-30A4781DD0C4-low.gif
VIN = 5.5 V, VOUT = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, CFF = 10 nF
Figure 6-51 PSRR vs Frequency and IOUT
(VOUT = 5 V)
GUID-EF15EB22-619A-4AFA-99AE-19255FC35E5E-low.gif
VIN = VOUT + 0.3 V or VIN = 1.1 V (whichever is greater), VBIAS = 5 V for VIN ≤ 2.2 V, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, CFF = 10 nF, RMS noise BW = 10 Hz to 100 kHz
 
Figure 6-53 Output Voltage Noise vs VOUT
GUID-20200826-CA0I-X1CR-13GM-QJJZWD58TPDL-low.gif
VOUT = 0.7 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, CFF = 10 nF, RMS noise BW = 10 Hz to 100 kHz
Figure 6-55 Output Noise vs Frequency and VIN
GUID-20200826-CA0I-PP1W-DZCZ-BJBRD6FVQQSP-low.gif
VOUT = 0.7 V, VIN = 1.1 V, VBIAS = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, RMS noise BW = 10 Hz to 100 kHz
Figure 6-57 Output Noise vs Frequency and CFF
GUID-56997569-58A1-410E-BA51-33A5044AC97E-low.gif
VIN = 1.2 V, VOUT = 0.7 V, VBIAS = 5 V, IOUT = 3 A,
COUT = 47 μF || 10 μF || 10 μF, CFF = 10 nF
 
Figure 6-59 Start-Up Waveform vs Time and CNR/SS
GUID-B20ABF10-3826-4A0D-9797-2FB4E6FEF21E-low.gif
VIN = VOUT + 0.5 V, VBIAS = 5 V, IOUT = 3 A to 100 mA,
slew rate = 1 A/μs, CNR/SS = CFF = 10 nF,
COUT = 47 μF || 10 μF || 10 μF
Figure 6-61 Load Transient vs Time and VOUT With Bias
GUID-A3044997-1BDA-44C6-B6D2-C2E4A664BD18-low.gif
VIN = VOUT + 0.5 V, VOUT = 0.7 V, IOUT = 3 A to 100 mA,
COUT = 47 μF || 10 μF || 10 μF, CNR/SS = CFF = 10 nF, slew rate = 1 A/μs
Figure 6-63 Load Transient vs Time and VOUT Without Bias
GUID-2B2CCD73-193D-4A91-B6F0-6D7976306F0B-low.gif
VIN = 1.2 V, VOUT = 0.7 V, VBIAS = 5 V, slew rate = 1 A/μs,
COUT = 47 μF || 10 μF || 10 μF, CNR/SS = CFF = 10 nF
Figure 6-65 Load Transient vs Time and DC Load
GUID-2AE3AD04-C37F-49F6-9F2E-C263C2A4622D-low.gif
IOUT = 3 A, VBIAS = 5.0 V
Figure 6-67 Dropout Voltage vs VIN With Bias
GUID-10C4ACC6-4FE4-4DBA-9889-5FFA8A8BEA61-low.gif
VIN = 1.1 V, VBIAS = 5.0 V
Figure 6-69 Dropout Voltage vs IOUT With Bias
GUID-ABF30466-203C-44DB-A005-7AA43E7B1ED7-low.gif
IOUT = 100 mA to 3 A
Figure 6-71 Load Regulation vs VOUT
GUID-B28DD31B-3803-454D-B85D-EEE6888549E1-low.gif
VIN = 3.8 V
Figure 6-73 Load Regulation vs IOUT (3.3-V Output)
GUID-B7CCED47-B84E-418E-A253-B050B99A72CE-low.gif
VOUT = 0.5 V, IOUT = 5 mA
Figure 6-75 Line Regulation vs VIN
GUID-E1F12F88-E9B4-4E3A-97AB-57443F33D227-low.gif
IOUT = 5 mA
Figure 6-77 Line Regulation vs VIN (5.15-V Output)
GUID-2F919B36-3D8E-4788-9056-F3EC212D1373-low.gif
VIN = 1.1 V, IOUT = 5 mA
Figure 6-79 Bias Pin Current With Bias
GUID-517FA019-AA21-4026-B956-066F9BE31EF2-low.gif
VIN = 1.1 V
Figure 6-81 Shutdown Current vs VIN With Bias
GUID-8677CCB6-0751-44CA-B665-4EE45EFAC501-low.gif
 
Figure 6-83 VIN UVLO vs Temperature
GUID-A1176A7B-2AB5-48DD-BB45-7D32CAACCA37-low.gif
VIN = 1.4 V, 6.5 V
Figure 6-85 Enable Threshold vs Temperature
GUID-C504C26F-3A9D-41D0-BC65-FF8C0F5B890B-low.gif
VIN = 6.5 V
Figure 6-87 PG Voltage vs PG Current Sink
GUID-2895A1B7-637D-41B7-9464-3EE45C177B83-low.gif
IOUT = 3 A, VBIAS = 5 V, COUT = 47 μF || 10 μF || 10 μF,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-44 PSRR vs Frequency and VIN With Bias
GUID-17DAABC1-237E-4110-88BF-CE5FAA9369A4-low.gif
IOUT = 1 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF,
CFF = 10 nF
Figure 6-46 PSRR vs Frequency and VIN
GUID-FADB61CB-6FFB-4FA9-8783-ADF022C42D0D-low.gif
IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF,
CFF = 10 nF
 
Figure 6-48 PSRR vs Frequency and VIN
(VOUT = 3.3 V)
GUID-C719FFDD-1B58-4B28-9616-9CAE05FB73C8-low.gif
VOUT = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF,
CNR/SS = 10 nF, CFF = 10 nF
Figure 6-50 PSRR vs Frequency and VIN
(VOUT = 5 V)
GUID-FF93C709-BF09-498D-8046-7DCAD6001F34-low.gif
VIN = VOUT + 0.3 V, VOUT = 1 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, CFF = 10 nF
Figure 6-52 VBIAS PSRR vs Frequency
GUID-20200826-CA0I-VGHW-TQ8Q-JS2G9QT0VVVD-low.gif
VIN = VOUT + 0.3 V or VIN = 1.1 V (whichever is greater), VBIAS = 5 V for VIN ≤ 2.2 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CNR/SS = 10 nF, CFF = 10 nF, RMS noise BW = 10 Hz to 100 kHz
Figure 6-54 Output Noise vs Frequency and VOUT
GUID-20200826-CA0I-49JN-SFT8-XPWWMHJ9MPGD-low.gif
VOUT = 0.7 V, VIN = 1.1 V, VBIAS = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CFF = 10 nF, RMS noise BW = 10 Hz to 100 kHz
Figure 6-56 Output Noise vs Frequency and CNR/SS
GUID-20200826-CA0I-GDGF-PGPS-LTCPKKVTSTMF-low.gif
VIN = VOUT + 0.3 V, VBIAS = 5 V, IOUT = 3 A, COUT = 47 μF || 10 μF || 10 μF, CFF = 10 nF, RMS noise BW = 10 Hz to 100 kHz
Figure 6-58 Output Noise vs Frequency
(5-V Output)
GUID-CDD62893-2F3F-44E5-AE3F-22EBAA88B1FA-low.gif
VIN = VOUT + 0.5 V, VBIAS = 5 V, IOUT = 100 mA to 3 A,
slew rate = 1 A/μs, CNR/SS = CFF = 10 nF,
COUT = 47 μF || 10 μF || 10 μF
Figure 6-60 Load Transient vs Time and VOUT With Bias
GUID-0BE1D923-9854-4EB5-A2A3-3E14D7A92CF6-low.gif
VIN = VOUT + 0.5 V, VOUT = 0.7 V, IOUT = 100 mA to 3 A,
COUT = 47 μF || 10 μF || 10 μF, CNR/SS = CFF = 10 nF, slew rate = 1 A/μs
Figure 6-62 Load Transient vs Time and VOUT Without Bias
GUID-6D5B64D8-393B-4518-966B-23149B4D009F-low.gif
VOUT = 5 V, IOUT, DC = 100 mA, IOUT = 100 mA to 3 A,
COUT = 47 μF || 10 μF || 10 μF, CNR/SS = CFF = 10 nF
Figure 6-64 Load Transient vs Time and Slew Rate
GUID-6A22F765-7C04-414C-BED7-D6CEC545BDC0-low.gif
IOUT = 3 A
 
Figure 6-66 Dropout Voltage vs VIN Without Bias
GUID-2830823A-674B-460A-B19B-69A7F4AE9B21-low.gif
VIN = 1.4 V
Figure 6-68 Dropout Voltage vs IOUT Without Bias
GUID-BE1913B9-70EB-4FA3-8980-9401CB085BAF-low.gif
VIN = 5.6 V
Figure 6-70 Dropout Voltage vs IOUT (High VIN)
GUID-554C6C6F-02A0-4290-9759-C61DC0458220-low.gif
VIN = 1.4 V
Figure 6-72 Load Regulation vs IOUT
GUID-AF6C57CF-018F-44A6-8F2A-D2083E601523-low.gif
VIN = 5.55 V, VOUT = 5.15 V
Figure 6-74 Load Regulation vs IOUT (5-V Output)
GUID-62BF2410-9777-4E40-9381-A16E0B3CBA3C-low.gif
VOUT = 0.5 V, VIN = 1.1 V, IOUT = 5 mA
Figure 6-76 Line Regulation With Bias
GUID-9EB84AD4-7EAD-4630-A95F-68857B0A9928-low.gif
VBIAS = 0 V, IOUT = 5 mA
Figure 6-78 Ground Pin Current vs VIN
GUID-F369BDDD-8F55-4308-B5D3-31896706903F-low.gif
VBIAS = 0 V
Figure 6-80 Shutdown Current vs VIN
GUID-BB3901A3-FFAB-450B-8417-B2C9D7309A32-low.gif
VBIAS = 0 V
Figure 6-82 INR/SS Current vs VIN
GUID-20913F17-094A-43C5-AAE2-7065EA12A1C6-low.gif
VIN = 1.1 V
Figure 6-84 VBIAS UVLO vs Temperature
GUID-4E30CC22-3279-4A15-8D64-57CE5166DCEE-low.gif
VIN = 1.4V
Figure 6-86 PG Voltage vs PG Current Sink
GUID-15FE8F1C-08A4-4924-A923-3989FED57C11-low.gif
 
Figure 6-88 PG Threshold vs Temperature