SLVSJF4 October   2025 TPS7E66-Q1

ADVANCE INFORMATION  

  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
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Enable (EN)
      2. 6.3.2 Dropout Voltage
      3. 6.3.3 Power-Good (PG)
      4. 6.3.4 Adjustable Power-Good Delay Timer (DELAY)
      5. 6.3.5 Undervoltage Lockout
      6. 6.3.6 Thermal Shutdown
      7. 6.3.7 Foldback Current Limit
      8. 6.3.8 Power Limit
      9. 6.3.9 Output Pulldown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Functional Mode Comparison
      2. 6.4.2 Normal Operation
      3. 6.4.3 Dropout Operation
      4. 6.4.4 Disabled
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Adjustable Device Feedback Resistor Selection
      2. 7.1.2 Recommended Capacitor Types
      3. 7.1.3 Input and Output Capacitor Selection
      4. 7.1.4 Reverse Current
      5. 7.1.5 Feed-Forward Capacitor
      6. 7.1.6 Dropout Voltage
      7. 7.1.7 Estimating Junction Temperature
      8. 7.1.8 Power Dissipation (PD)
      9. 7.1.9 Power Dissipation Versus Ambient Temperature
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Choose Feedback Resistors
      3. 7.2.3 Setting the Adjustable Power-Good Delay
    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 Development Support
        1. 8.1.1.1 Evaluation Module
        2. 8.1.1.2 Spice Models
      2. 8.1.2 Device Nomenclature
    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

6.1 Overview

The TPS7E66-Q1 low-dropout regulator (LDO) consumes ultra-low quiescent current (2.8μA (typ), in fixed configuration) at no-load current. The device offers a wide input voltage range (3.0V to 40V), wide output range (1.2V to 38V, in adjustable configuration) and up-to 150mA of load current. The device is stable with the output capacitor range of 2.2μF to 100μF. The device also provide power-good functionality with delay and de-glitch mechanisms. The delay for power-good can be programmed also using external components on the delay pin.

The low quiescent current across the complete load current range makes the TPS7E66-Q1 designed for powering off-battery loads. The TPS7E66-Q1 has an internal soft-start mechanism that provides an uniform start-up with controlled inrush current. This LDO also has over-current (fold-back), over-power and thermal protection during a load-short or fault condition on the output for better reliability.