SLVSI31 April   2026 TPS61371

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 I2C Timing Requirements
    7. 5.7 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  Undervoltage Lockout
      2. 6.3.2  Enable and Disable
      3. 6.3.3  Output Voltage Setting
      4. 6.3.4  Reference Voltage Slew Rate
      5. 6.3.5  Error Amplifier
      6. 6.3.6  Bootstrap Voltage (BST)
      7. 6.3.7  Load Disconnect
      8. 6.3.8  Output Discharge
      9. 6.3.9  Overvoltage Protection
      10. 6.3.10 Thermal Shutdown
      11. 6.3.11 Start-Up
      12. 6.3.12 Short Protection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operation
      2. 6.4.2 Auto PFM Mode
      3. 6.4.3 Forced PWM Mode
      4. 6.4.4 Mode Selectable
    5. 6.5 Programming
      1. 6.5.1 Serial Interface Description
      2. 6.5.2 Standard-, Fast-, and Fast-Mode Plus Protocol
      3. 6.5.3 I2C Update Sequence
      4. 6.5.4 I2C Target Address
        1. 6.5.4.1 I2C Target Address Description
  8. 7 Register Map
    1. 7.1 Register Description
      1. 7.1.1 Register Map
      2. 7.1.2 Register CONTROL (Register address: 0x01; Default: 0x01)
      3. 7.1.3 Register VOUT (Register address: 0x02; Default: 0x36)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting the Output Voltage
        2. 8.2.2.2 Selecting the Inductor
        3. 8.2.2.3 Selecting the Output Capacitors
        4. 8.2.2.4 Selecting the Input Capacitors
        5. 8.2.2.5 Loop Stability and Compensation
          1. 8.2.2.5.1 Small Signal Model
        6. 8.2.2.6 Loop Compensation Design Steps
        7. 8.2.2.7 Selecting the Bootstrap Capacitor
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
        1. 8.4.2.1 Thermal Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    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. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The TPS61371 is a fully-integrated synchronous boost converter with the load disconnect built-in. The device supports output voltage up to 16V with a 3.8A current limit. The output voltage can be changed either by the feedback resistors or by the I2C controlled reference voltage VREF. The input voltage ranges from 2.7V to 5.5V supporting applications powered by a single-cell Lithium-ion battery or 5V bus.

The TPS61371 uses the peak current mode with the adaptive off-time control topology. The device works in PWM operation of 1.5MHz at moderate-to-heavy loads. At the light load conditions, the device can be configured in either auto PFM or forced PWM operation. The mode is determined by the connection of the MODE pin and the I2C register. Auto PFM mode has the benefit of high efficiency at light load while forced PWM operation keeps the switching frequency constant across the whole load range. The TPS61371 has a soft start to minimize the inrush current during start-up. The TPS61371 features of the load disconnect during shutdown and provides latch type overvoltage and output short protections. In addition, the device implements thermal shutdown protection.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
TPS61371VAR (WQFN-HR, 14)2.5mm × 2.5mm
(1) For more information, see Section 11.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPS61371 Typical Application Circuit Typical Application Circuit