SLVSDI1C April   2016  – November 2025 TPS7B4254-Q1

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 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 Short-Circuit and Overcurrent Protection
      2. 6.3.2 Integrated Inductive Clamp Protection
      3. 6.3.3 OUT Short-to-Battery and Reverse-Polarity Protection
      4. 6.3.4 Undervoltage Shutdown
      5. 6.3.5 Thermal Protection
      6. 6.3.6 Regulated Output (OUT)
      7. 6.3.7 Adjustable Output Voltage (FB and ADJ)
        1. 6.3.7.1 OUT Voltage Equal to the Reference Voltage
        2. 6.3.7.2 OUT Voltage Higher Than Reference Voltage
        3. 6.3.7.3 Output Voltage Lower Than Reference Voltage
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operation With VIN < 4V
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Application With Output Voltage Equal to the Reference Voltage
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Input Capacitor
          2. 7.2.1.2.2 Output Capacitor
        3. 7.2.1.3 Application Curve
      2. 7.2.2 High-Accuracy LDO
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
      2. 8.1.2 Development Support
    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
    1. 10.1 Mechanical Data

5.3 Recommended Operating Conditions

over operating ambient temperature range (unless otherwise noted)(1)
MINMAXUNIT
VINUnregulated input voltage(2)440V
VADJReference input voltage218V
VFBFeedback input voltage for the tracker218V
VOUTRegulated output voltage240V
COUTOutput capacitor requirements(3)10500µF
Output ESR requirements(4)0.00120Ω
TJOperating junction temperature–40150°C
(1) Within the functional range the device operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the related Electrical Characteristics table.
(2) VIN > VADJ + VDROPOUT
(3) The minimum output capacitance requirement is applicable for a worst-case capacitance tolerance of 30%. When a resistor divider is connected between the OUT and FB pins (the output voltage is higher than reference voltage), a 47nF feedforward capacitor is required to be connected between the OUT and FB pins for loop stability, and the ESR range of the output capacitor is required to be from 0.001 to 10Ω.
(4) Relevant ESR value at f = 10kHz