SBVS392A June   2022  – August 2023 TPS7B4255-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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 Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Tracker Output Voltage (VOUT)
        1. 7.3.1.1 Output Voltage Equal to the Reference Voltage
        2. 7.3.1.2 Output Voltage Less Than the Reference Voltage
      2. 7.3.2 Reverse Current Protection
      3. 7.3.3 Undervoltage Lockout
      4. 7.3.4 Thermal Protection
      5. 7.3.5 Current Limit
      6. 7.3.6 Output Short to Battery
      7. 7.3.7 Tracking Regulator With an Enable Circuit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Operation With VIN < 3 V
      4. 7.4.4 Disable With ADJ/EN Control
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Dropout Voltage
      2. 8.1.2 Reverse Current
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input and Output Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Package Mounting
        2. 8.4.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
        3. 8.4.1.3 Power Dissipation and Thermal Considerations
        4. 8.4.1.4 Thermal Performance Versus Copper Area
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

Package Options

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

6.7 Typical Characteristics

TPS7B4255-Q1 Tracking Error vs Ambient Temperature
VIN = 13.5 V, VADJ = 5 V
Figure 6-1 Tracking Error vs Ambient Temperature
TPS7B4255-Q1 Line Regulation
VADJ = 5 V, TAMB = 25°C
Figure 6-3 Line Regulation
TPS7B4255-Q1 Output Voltage vs Input Voltage
VADJ = 5 V, IOUT = 10 mA
Figure 6-5 Output Voltage vs Input Voltage
TPS7B4255-Q1 Dropout Voltage vs Ambient Temperature
VIN = 5 V, VADJ = 5 V
Figure 6-7 Dropout Voltage vs Ambient Temperature
TPS7B4255-Q1 Ground Current vs Output Current
VIN = 13.5 V, VADJ = 5 V
Figure 6-9 Ground Current vs Output Current
TPS7B4255-Q1 Ground Current vs Input Voltage
VADJ = 5 V, IOUT = 50 mA
Figure 6-11 Ground Current vs Input Voltage
TPS7B4255-Q1 Current Limit Profile vs. Output Voltage
VIN = 13.5 V, VADJ = 5 V
Figure 6-13 Current Limit Profile vs. Output Voltage
TPS7B4255-Q1 Reverse Current vs Output Voltage
VIN = 0 V, VADJ = 5 V
Figure 6-15 Reverse Current vs Output Voltage
TPS7B4255-Q1 Power-Supply Rejection Ratio vs Frequency
VIN = 13.5 V, VADJ = 5 V, COUT = 10 μF, TAMB = 25°C
 
Figure 6-17 Power-Supply Rejection Ratio vs Frequency
TPS7B4255-Q1 Load Transient
VIN = 13.5 V, VADJ = 5 V, COUT = 10 μF, IOUT = 1 mA to 30 mA, IOUT ramp rate = 1 A/μs
Figure 6-19 Load Transient
TPS7B4255-Q1 ESR vs Load Capacitance
1 mΩ ≤ ESR ≤ 3 Ω, 1 μF ≤ COUT ≤ 200 μF
Figure 6-21 ESR vs Load Capacitance
TPS7B4255-Q1 Load Regulation
VIN = 13.5 V, VADJ = 5 V
Figure 6-2 Load Regulation
TPS7B4255-Q1 Line Regulation
VADJ = 5 V, IOUT = 10 mA
Figure 6-4 Line Regulation
TPS7B4255-Q1 Output Voltage vs Adjustable Reference Voltage
VIN = 13.5 V, IOUT = 10 mA
Figure 6-6 Output Voltage vs Adjustable Reference Voltage
TPS7B4255-Q1 Dropout Voltage vs Output Current
VIN = 5 V, VADJ = 5 V
Figure 6-8 Dropout Voltage vs Output Current
TPS7B4255-Q1 Ground Current vs Ambient Temperature
VIN = 13.5 V, VADJ = 5 V
Figure 6-10 Ground Current vs Ambient Temperature
TPS7B4255-Q1 Current Limit vs Ambient Temperature
VIN = 13.5 V, VADJ = 5 V
Figure 6-12 Current Limit vs Ambient Temperature
TPS7B4255-Q1 Adjustable Pin Current vs Adjustable Pin Voltage
VIN = 13.5 V, IOUT = 0 mA
Figure 6-14 Adjustable Pin Current vs Adjustable Pin Voltage
TPS7B4255-Q1 Reverse Current vs Input Voltage
VOUT = 0 V, VADJ = 5 V
Figure 6-16 Reverse Current vs Input Voltage
TPS7B4255-Q1 Line Transient
VADJ = 5 V, COUT = 10 μF, VIN = 9 V to 16 V,
VIN ramp rate = 1 V/μs
Figure 6-18 Line Transient
TPS7B4255-Q1 Start-Up Profile
VIN = 13.5 V, VADJ = 5 V, VIN rate of rise = 1 V/μs, COUT = 1 μF
Figure 6-20 Start-Up Profile