SBVS263B July   2017  – June 2025 TPS7A39

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Start-Up Characteristics
    7. 5.7 Timing Diagram
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Voltage Regulation
        1. 6.3.1.1 DC Regulation
        2. 6.3.1.2 AC and Transient Response
      2. 6.3.2 User-Settable Buffered Reference
      3. 6.3.3 Active Discharge
      4. 6.3.4 System Start-Up Controls
        1. 6.3.4.1 Start-Up Tracking
        2. 6.3.4.2 Sequencing
          1. 6.3.4.2.1 Enable (EN)
          2. 6.3.4.2.2 Undervoltage Lockout (UVLO) Control
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Disabled
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1  Setting the Output Voltages on Adjustable Devices
      2. 7.1.2  Capacitor Recommendations
      3. 7.1.3  Input and Output Capacitor (CINx and COUTx)
      4. 7.1.4  Feed-Forward Capacitor (CFFx)
      5. 7.1.5  Noise-Reduction and Soft-Start Capacitor (CNR/SS)
      6. 7.1.6  Buffered Reference Voltage
      7. 7.1.7  Overriding Internal Reference
      8. 7.1.8  Start-Up
        1. 7.1.8.1 Soft-Start Control (NR/SS)
          1. 7.1.8.1.1 In-Rush Current
        2. 7.1.8.2 Undervoltage Lockout (UVLOx) Control
      9. 7.1.9  AC and Transient Performance
        1. 7.1.9.1 Power-Supply Rejection Ratio (PSRR)
        2. 7.1.9.2 Channel-to-Channel Output Isolation and Crosstalk
        3. 7.1.9.3 Output Voltage Noise
        4. 7.1.9.4 Optimizing Noise and PSRR
        5. 7.1.9.5 Load Transient Response
      10. 7.1.10 DC Performance
        1. 7.1.10.1 Output Voltage Accuracy (VOUT x)
        2. 7.1.10.2 Dropout Voltage (VDO)
      11. 7.1.11 Reverse Current
      12. 7.1.12 Power Dissipation (PD)
        1. 7.1.12.1 Estimating Junction Temperature
    2. 7.2 Typical Applications
      1. 7.2.1 Design 1: Single-Ended to Differential Isolated Supply
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Switcher Choice
          2. 7.2.1.2.2 Full Bridge Rectifier With Center-Tapped Transformer
          3. 7.2.1.2.3 Total Solution Efficiency
          4. 7.2.1.2.4 Feedback Resistor Selection
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Design 2: Getting the Full Range of a SAR ADC
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Detailed Design Description
          1. 7.2.2.3.1 Regulation of –0.2V
          2. 7.2.2.3.2 Feedback Resistor Selection
        4. 7.2.2.4 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Board Layout Recommendations to Improve PSRR and Noise Performance
        2. 7.4.1.2 Package Mounting
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Evaluation Modules
        2. 8.1.1.2 Spice Models
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.8 Typical Characteristics

at TJ = 25°C, VINP = VOUTP(nom) + 1.0 V or VIN = 3.3 V (whichever is greater), VINN = VOUTN(nom) – 1 V or –3.3 V (whichever is less), VEN = VIN, IOUT = 1 mA, CIN = 10-μF ceramic, COUT = 10-μF ceramic, and CFFP = CFFN = CNR/SS = 10 nF (unless otherwise noted)

TPS7A39 Positive PSRR vs Frequency and VINP
VOUTP = 5 V, IOUTP = 150 mA, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-2 Positive PSRR vs Frequency and VINP
TPS7A39 Positive PSRR vs Frequency and IOUTP
VOUTP = 5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-4 Positive PSRR vs Frequency and IOUTP
TPS7A39 Positive PSRR vs Frequency and COUTP
VOUTP = 5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-6 Positive PSRR vs Frequency and COUTP
TPS7A39 Positive PSRR vs Frequency and CFFP
VOUTP = 5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = 10 nF
Figure 5-8 Positive PSRR vs Frequency and CFFP
TPS7A39 Positive PSRR vs Frequency and CNR/SS
VOUTP = 5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CFFx = 10 nF
Figure 5-10 Positive PSRR vs Frequency and CNR/SS
TPS7A39 Crosstalk Positive to Negative
 
Figure 5-12 Crosstalk Positive to Negative
TPS7A39 Positive Spectral Noise Density vs Frequency and VOUTP
IOUTP = 150 mA, VINP = VEN, VOUTN = –VOUTP, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-14 Positive Spectral Noise Density vs Frequency and VOUTP
TPS7A39 Positive Spectral Noise Density vs Frequency and CNR/SS
VOUTP = 5 V, IOUTP = 150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CFFx = 10 nF
Figure 5-16 Positive Spectral Noise Density vs Frequency and CNR/SS
TPS7A39 Positive Spectral Noise Density vs Frequency and CFF
VOUTP = 5 V, IOUTP = 150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = 10 nF
Figure 5-18 Positive Spectral Noise Density vs Frequency and CFF
TPS7A39 Positive Spectral Noise Density vs Frequency and COUT
VOUTP = 5 V, IOUTP = 150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-20 Positive Spectral Noise Density vs Frequency and COUT
TPS7A39 Positive Spectral Noise Density vs Frequency and IOUT
VOUTP = 5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTN = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-22 Positive Spectral Noise Density vs Frequency and IOUT
TPS7A39 Startup (VINP = VEN)
VOUTP = –VOUTN = 5 V, VINP = –VINN = 12 V
Figure 5-24 Startup (VINP = VEN)
TPS7A39 Line Transient Positive Regulator
VINP = 5.5 V to 10 V at 1 V/µs, VOUTP = –VOUTN = 5 V, IOUTN = 0 mA, IOUTP = 150 mA
Figure 5-26 Line Transient Positive Regulator
TPS7A39 Line Transient Positive Regulator
VINP = 5.5 V to 10 V at 4 V/µs, VOUTP = –VOUTN = 5 V, IOUTN = 0 mA, IOUTP = 150 mA
Figure 5-28 Line Transient Positive Regulator
TPS7A39 Load Transient Positive Regulator
VINP = 6 V, VOUTP = –VOUTN = 5 V, IOUTN = 0 mA, IOUTP = 1 mA to 150 mA at 1 A/µs
Figure 5-30 Load Transient Positive Regulator
TPS7A39 Negative Line Regulation
VOUTN = 0 V
Figure 5-32 Negative Line Regulation
TPS7A39 Negative Line Regulation
VOUTN = –1.19 V
Figure 5-34 Negative Line Regulation
TPS7A39 Negative Line Regulation
VOUTN = –24 V
Figure 5-36 Negative Line Regulation
TPS7A39 Negative Load Regulation
VOUTN = –15 V, VINN = –16 V
Figure 5-38 Negative Load Regulation
TPS7A39 Positive Load Regulation
VOUTP = 1.188 V, VINP = 3.3 V
Figure 5-40 Positive Load Regulation
TPS7A39 Positive Load Regulation
VOUTP = 30 V, VINP = 33 V
Figure 5-42 Positive Load Regulation
TPS7A39 Positive Line Regulation
VOUTP = 15 V
Figure 5-44 Positive Line Regulation
TPS7A39 Positive Regulator Current Limit
VOUTP = 1.188 V
Figure 5-46 Positive Regulator Current Limit
TPS7A39 Positive Regulator Dropout Voltage vs Input Voltage
 
Figure 5-48 Positive Regulator Dropout Voltage vs Input Voltage
TPS7A39 Positive Regulator Dropout Voltage vs Output Current
VINP = 3.3 V
Figure 5-50 Positive Regulator Dropout Voltage vs Output Current
TPS7A39 Enable Threshold vs Temperature
 
Figure 5-52 Enable Threshold vs Temperature
TPS7A39 Positive Output Discharge Current vs Output Voltage
 
Figure 5-54 Positive Output Discharge Current vs Output Voltage
TPS7A39 Positive Supply Current vs Output Current
VOUTP = 1.188 V
Figure 5-56 Positive Supply Current vs Output Current
TPS7A39 Buffer Accuracy vs Buffer Current
VOUTN = –1.19 V
Figure 5-58 Buffer Accuracy vs Buffer Current
TPS7A39 Negative PSRR vs Frequency and VINN
VOUTP = 5 V, IOUTP = 0 mA, VOUTN = –5 V, IOUTN = 150 mA, CNR/SS = CFFx = 10 nF
Figure 5-3 Negative PSRR vs Frequency and VINN
TPS7A39 Negative PSRR vs Frequency and IOUTN
VOUTP = 5 V, IOUTP = 0 mA, VINN = –6 V, VOUTN = –5 V, CNR/SS = CFFx = 10 nF
Figure 5-5 Negative PSRR vs Frequency and IOUTN
TPS7A39 Negative PSRR vs Frequency and COUTN
VOUTP = 5 V, IOUTP = 0 mA, VINN = –6 V, VOUTN = –5 V, CNR/SS = CFFx = 10 nF, COUTP = 10 µF
Figure 5-7 Negative PSRR vs Frequency and COUTN
TPS7A39 Negative PSRR vs Frequency and CFFN
VOUTP = 5 V, IOUTP = 0 mA, VINN = –6 V, VOUTN = –5 V, CNR/SS = CFFP = 10 nF
Figure 5-9 Negative PSRR vs Frequency and CFFN
TPS7A39 Negative PSRR vs Frequency and CNR/SS
VOUTP = 5 V, IOUTP = 0 mA, VINN = –6 V, VOUTN = –5 V, CFFx = 10 nF
Figure 5-11 Negative PSRR vs Frequency and CNR/SS
TPS7A39 Crosstalk Negative to Positive
 
Figure 5-13 Crosstalk Negative to Positive
TPS7A39 Negative Spectral Noise Density vs Frequency and VOUTN
IOUTN = –150 mA, VINP = VEN, VOUTN = –VOUTP, IOUTP = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-15 Negative Spectral Noise Density vs Frequency and VOUTN
TPS7A39 Negative Spectral Noise Density vs Frequency and CNR/SS
VOUTN = –5 V, IOUTN = –150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTP = 0 mA, CFFx = 10 nF
Figure 5-17 Negative Spectral Noise Density vs Frequency and CNR/SS
TPS7A39 Negative Spectral Noise Density vs Frequency and CFF
VOUTN = –5 V, IOUTN = –150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTP = 0 mA, CNR/SS = 10 nF
Figure 5-19 Negative Spectral Noise Density vs Frequency and CFF
TPS7A39 Negative Spectral Noise Density vs Frequency and COUT
VOUTN = –5 V, IOUTN = –150 mA, VINP = VEN = 6 V, VOUTN = –5 V, IOUTP = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-21 Negative Spectral Noise Density vs Frequency and COUT
TPS7A39 Negative Spectral Noise Density vs Frequency and IOUT
VOUTN = –5 V, VINP = VEN = 6 V, VOUTN = –5 V, IOUTP = 0 mA, CNR/SS = CFFx = 10 nF
Figure 5-23 Negative Spectral Noise Density vs Frequency and IOUT
TPS7A39 Startup With EN
VOUTP = –VOUTN = 5 V, VINP = –VINN = 15 V
Figure 5-25 Startup With EN
TPS7A39 Line Transient Negative Regulator
VINN = –5.5 V to –10 V at 1 V/µs, VOUTP = –VOUTN = 5 V, IOUTN = –150 mA, IOUTP = 0 mA
Figure 5-27 Line Transient Negative Regulator
TPS7A39 Line Transient Negative Regulator
VINN = –5.5 V to –10 V at 4 V/µs, VOUTP = –VOUTN = 5 V, IOUTN = –150 mA, IOUTP = 0 mA
Figure 5-29 Line Transient Negative Regulator
TPS7A39 Load Transient Negative Regulator
VINN = –6 V, VOUTP = –VOUTN = 5 V, IOUTN = 0 mA, IOUTN = –1 mA to –150 mA at 1 A/µs
Figure 5-31 Load Transient Negative Regulator
TPS7A39 Negative Load Regulation
VOUTN = 0 V, VINN = –3.3 V
Figure 5-33 Negative Load Regulation
TPS7A39 Negative Line Regulation
VOUTN = –15 V
Figure 5-35 Negative Line Regulation
TPS7A39 Negative Load Regulation
VOUTN = –1.2 V, VINN = –3.3 V
Figure 5-37 Negative Load Regulation
TPS7A39 Negative Load Regulation
VOUTN = –30 V, VINN = –33 V
Figure 5-39 Negative Load Regulation
TPS7A39 Positive Load Regulation
VOUTP = 15 V, VINP = 16 V
Figure 5-41 Positive Load Regulation
TPS7A39 Positive Line Regulation
VOUTP = 1.188 V
Figure 5-43 Positive Line Regulation
TPS7A39 Positive Line Regulation
VOUTP = 24 V
Figure 5-45 Positive Line Regulation
TPS7A39 Negative Regulator Current Limit
VOUTN = –1.19 V
Figure 5-47 Negative Regulator Current Limit
TPS7A39 Negative Regulator Dropout Voltage vs Input Voltage
 
Figure 5-49 Negative Regulator Dropout Voltage vs Input Voltage
TPS7A39 Negative Regulator Dropout Voltage vs Output Current
VOUTN = –3.3 V
Figure 5-51 Negative Regulator Dropout Voltage vs Output Current
TPS7A39 INR/SS vs VNR/SS
 
Figure 5-53 INR/SS vs VNR/SS
TPS7A39 Negative Output Discharge Current vs Output Voltage
 
Figure 5-55 Negative Output Discharge Current vs Output Voltage
TPS7A39 Negative Supply Current vs Output Current
VOUTN = –1.19 V
Figure 5-57 Negative Supply Current vs Output Current