SBVS360A February   2020  – November 2020 TPS7B85-Q1

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  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 Switching Characteristics
    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 Enable (EN)
      2. 7.3.2 Power-Good (PG)
        1. 7.3.2.1 Adjustable Power-Good (PGADJ)
      3. 7.3.3 Adjustable Power-Good Delay Timer (DELAY)
      4. 7.3.4 Sense Comparator
      5. 7.3.5 Undervoltage Lockout
      6. 7.3.6 Thermal Shutdown
      7. 7.3.7 Current Limit
    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 Input and Output Capacitor Selection
      2. 8.1.2 Dropout Voltage
      3. 8.1.3 Reverse Current
      4. 8.1.4 Power Dissipation (PD)
        1. 8.1.4.1 Thermal Performance Versus Copper Area
      5. 8.1.5 Estimating Junction Temperature
      6. 8.1.6 SI Pin
        1. 8.1.6.1 Calculating the Sense Input (SI) Pin Threshold
        2. 8.1.6.2 Different Uses for the Sense Input Pin
          1. 8.1.6.2.1 Monitoring Input Voltage
          2. 8.1.6.2.2 Creating OV and UV Power-Good
          3. 8.1.6.2.3 Monitoring a Separate Supply Voltage
      7. 8.1.7 Pulling Up the SO and PG Pins to a Different Voltage
      8. 8.1.8 Power-Good
        1. 8.1.8.1 Setting the Adjustable Power-Good Threshold
        2. 8.1.8.2 Setting the Adjustable Power-Good Delay
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Capacitor
        2. 8.2.2.2 Output Capacitor
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Package Mounting
      2. 10.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary

Typical Characteristics

specified at TJ = –40°C to +150°C, VIN = 13.5 V,  IOUT = 100 µA, COUT = 2.2 µF, 1 mΩ < COUT ESR < 2 Ω, CIN = 1 µF, and
VEN = 2 V
(unless otherwise noted)

GUID-20201027-CA0I-DDKM-P3CH-PR9RCVP3TSLK-low.gif
 
Figure 6-1 Accuracy vs Temperature
GUID-896D7D48-FF74-44BE-AF66-E3F937604688-low.gif
VOUT = 5 V, IOUT = 5 mA
Figure 6-3 Line Regulation vs VIN
GUID-B1187C01-56B3-4FFD-AED2-7FB678B6445A-low.gif
VOUT = 5 V
Figure 6-5 Load Regulation vs IOUT
GUID-20201021-CA0I-CBQM-GHBT-V70TN0WBPK9K-low.gif
 COUT = 10 µF
Figure 6-7 Line Regulation at 100 mA
GUID-7ED1A0CC-CC95-4C14-8160-EC2B6EBD9043-low.gif
COUT = 10 µF (X7R 50 V), VOUT = 5 V
Figure 6-9 PSRR vs Frequency and IOUT
GUID-20201015-CA0I-89HN-KGSX-SMJJCVXR0730-low.gif
VOUT = 3.3 V, COUT = 10 µF
Figure 6-11 Noise vs Frequency at 3.3 V
GUID-07A57807-C8BC-4CF4-8BB4-DCB689CDEAE1-low.gif
VOUT = 5 V, IOUT = 1 mA, VIN = 13.5 V to 40 V,
slew rate = 2.7 V/µs, VEN = 3.3 V, COUT = 10 µF
Figure 6-13 Line Transients at 13.5 V to 40 V
GUID-20201007-CA0I-FSKW-WKPD-JCF9J7V48ZKN-low.gif
VOUT = 5 V, IOUT = 0 mA to 100 mA, slew rate = 1 A/µs,
VEN = 3.3 V, COUT = 10 µF
Figure 6-15 Load Transient, No Load to 100 mA
GUID-20201007-CA0I-XXDB-P5P2-KJBVXVQCXJ7T-low.gif
VOUT = 5 V, IOUT = 45 mA to 105 mA, slew rate = 0.1 A/µs,
VEN = 3.3 V, COUT = 10 µF
Figure 6-17 Load Transient, 45 mA to 105 mA
GUID-20201007-CA0I-18PB-ZCVC-V2MGLJCQXZCX-low.gif
VOUT = 5 V, IOUT = 0 mA to 150 mA, slew rate = 1 A/µs,
VEN = 3.3 V, COUT = 10 µF
Figure 6-19 Load Transient, No Load to 150 mA
GUID-20201027-CA0I-N393-9XQ7-1BMFXB9TZBSK-low.gif
VIN = VOUT + 1 V, VOUT = 90% × VOUT(NOM)
 
Figure 6-21 Output Current Limit vs Temperature
GUID-CEA41038-9B8D-419E-B704-17233FA7998C-low.gif
VOUT = 5 V 
Figure 6-23 Quiescent Current (IQ) vs VIN
GUID-20201015-CA0I-8XBR-GQZS-KGXMHHPSMXVN-low.gif
 IOUT = 100 mA
Figure 6-25 Ground Current
GUID-A29ACE32-6488-45FC-B77D-5B6C1C8D572A-low.gif
 
Figure 6-27 EN Threshold vs Temperature
GUID-20614705-7DFC-430A-AB80-6E083B2F02CB-low.gif
 
Figure 6-29 PG Threshold vs Temperature
GUID-A5B1FC77-962E-4423-9BEB-BE8BDD4F6311-low.gif
 
Figure 6-31 PGADJ Threshold vs Temperature
GUID-20201116-CA0I-JCNC-MRCV-TSPWK3HHZCJK-low.gif
 VIN = 13.5 V, COUT = 10 µF
Figure 6-33 Startup Plot With EN
GUID-55805630-BA54-4F70-83AC-C2FC6F9F6D92-low.gif
VDELAY = 1 V
Figure 6-35 Delay Pin Current vs Temperature
GUID-20201026-CA0I-NWZ7-HZPH-KTDLZFDJLS11-low.gif
 
Figure 6-37 Thermal Shutdown
GUID-051B3500-00D7-4B86-881F-EB2526320CAF-low.gif
VOUT = 5 V, IOUT = 150 mA
Figure 6-2 Line Regulation vs VIN
GUID-8648F713-49EC-4C70-8F9D-E33C53B163F3-low.gif
VOUT = 5 V, IOUT = 1 mA
Figure 6-4 Line Regulation vs VIN
GUID-20201021-CA0I-TGTX-H3VS-QZ1SXM8QS1GQ-low.gif
COUT = 10 µF 
Figure 6-6 Line Regulation at 50 mA
GUID-EA8B6FBB-A60C-425F-A0F4-E7F84BE341FF-low.gif
VIN = 3 V
Figure 6-8 Dropout Voltage (VDO) vs IOUT
GUID-55E9C6E0-B8E0-4F5D-9A06-BC6D0A7CC1C5-low.gif
COUT = 10 µF (X7R 50 V), IOUT = 150 mA, VOUT = 5 V
Figure 6-10 PSRR vs Frequency and VIN
GUID-20201015-CA0I-CVBC-WZSQ-6NJ0T4FKWWNZ-low.gif
VOUT = 5 V, COUT = 10 µF
Figure 6-12 Noise vs Frequency at 5.0 V
GUID-20201015-CA0I-GCTX-X5FM-09CFSZWT4QDX-low.gif
VOUT = 5 V, VIN = 5.5 V to 6.5 V, trise = 1 µs, COUT = 10 µF
 
Figure 6-14 Line Transients at 5.5 V to 6.5 V
GUID-20201007-CA0I-W14F-5C3L-LKPXN4MCRBNS-low.gif
VOUT = 5 V, IOUT = 0 mA to 100 mA, slew rate = 1 A/µs,
VEN = 3.3 V, COUT = 10 µF
Figure 6-16 Load Transient, No Load to 100-mA Rising Edge
GUID-20201007-CA0I-CCDT-KMW0-VHVXRW627VWF-low.gif
VOUT = 5 V, IOUT = 45 mA to 105 mA, slew rate = 0.1 A/µs,
VEN = 3.3 V, COUT = 10 µF
Figure 6-18 Load Transient, 45-mA to 105-mA Rising Edge
GUID-20201007-CA0I-FJZJ-DHRN-FX7XBHP8LVSD-low.gif
VOUT = 5 V, IOUT = 0 mA to 150 mA, slew rate = 1 A/µs, VEN = 3.3 V, COUT = 10 µF
Figure 6-20 Load Transient, No Load to 150-mA Rising Edge
GUID-4DAFAF4F-2320-444F-8409-3899D39989EF-low.gif
VOUT = 5 V  
Figure 6-22 Quiescent Current (IQ) vs VIN
GUID-20201007-CA0I-PTWH-GFXF-HDLJ2LGRNH0V-low.gif
 
Figure 6-24 Ground Current (IGND) vs IOUT
GUID-20201015-CA0I-1J2Q-ZP3W-W53N7QBCL1DS-low.gif
 IOUT = 500 µA
Figure 6-26 Ground Current
GUID-B7D3BEC4-1B81-4038-91EB-C40C2AABAE41-low.gif
 
Figure 6-28 Undervoltage Lockout (UVLO) Threshold vs Temperature
GUID-3BD4EE6D-24DF-4DE5-BDA3-4EE5D73CC2F6-low.gif
 
Figure 6-30 Sense Input Threshold vs Temperature
GUID-A4387F39-0238-4116-98D2-F05E8C92583E-low.gif
 COUT = 10 µF
Figure 6-32 Startup Plot Inrush Current
GUID-20201007-CA0I-D1VX-J0WP-9VQ2LRMGG91G-low.gif
COUT = 10 µF
Figure 6-34 Startup Plot
GUID-20201026-CA0I-WCHH-BDZP-ZPQDPS44DCH9-low.gif
 
Figure 6-36 Output Voltage vs Injected Current
GUID-20201116-CA0I-4NWX-DC0T-5VBZZZPPTSN3-low.gif
 
Figure 6-38 Stability ESR vs COUT