SLVSCK4A September 2015  – May 2016 TPS61235P , TPS61236P


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1Absolute Maximum Ratings
    2. 7.2ESD Ratings
    3. 7.3Recommended Operating Conditions
    4. 7.4Thermal Information
    5. 7.5Electrical Characteristics
    6. 7.6Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1 Boost Controller Operation
      2. 8.3.2 Soft Start
      3. 8.3.3 Enable and Disable
      4. 8.3.4 Constant Output Voltage and Constant Output Current Operations
        1. Voltage Operation
        2. Current Monitor
        3. Current Operation
      5. 8.3.5 Over Current Protection
      6. 8.3.6 Load Status Indication
      7. 8.3.7 Under voltage Lockout
      8. 8.3.8 Over Voltage Protection and Reverse Current Block
      9. 8.3.9 Short Circuit Protection
      10. 8.3.10Thermal Shutdown
    4. 8.4Device Functional Modes
      1. 8.4.1PWM Mode
      2. 8.4.2PFM Mode
      3. 8.4.3CV Mode and CC Mode
  9. Applications and Implementation
    1. 9.1Application Information
    2. 9.2Typical Applications
      1. 9.2.1TPS61236P 3-V to 4.35-V Input, 5-V Output Voltage, 3-A Maximum Output Current
        1. Requirements
        2. Design Procedure
          1. the Output Voltage
          2. the Constant Output Current
          3. and Capacitor Selection
            1. Selection
            2. Capacitor Selection
            3. Capacitor Selection
          4. Stability, Feed Forward Capacitor
          5. Pin Pull-up Resistor
        3. 5-V Output Application Curves
      2. 9.2.2TPS61236P 2.3-V to 5-V Input, 5-V 2-A Output Converter
        1. Requirements
        2. Design Procedure
        3. 5-V Output Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
    3. 11.3Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1Device Support
      1. 12.1.1Third-Party Products Disclaimer
    2. 12.2Documentation Support
      1. 12.2.1Related Documentation
    3. 12.3Related Links
    4. 12.4Receiving Notification of Documentation Updates
    5. 12.5Community Resources
    6. 12.6Trademarks
    7. 12.7Electrostatic Discharge Caution
    8. 12.8Glossary
  13. 13Mechanical, Packaging, and Orderable Information


机械数据 (封装 | 引脚)

1 Features

  • Up to 97% Efficiency Synchronous Boost
  • Up to 3.5-A IOUT for 3.3-V to 5-V Conversion
  • 10-A 14-mΩ/14-mΩ Internal Power Switches
  • Programmable Constant Output Current
  • Output Current Monitor
  • 10-µA IQ under Light Load Condition
  • Boost Status Indication
  • True disconnection during shutdown
  • Fixed 5.1-V Output Voltage (TPS61235P) or Adjustable Output Voltage from 2.9-V to-5.5 V (TPS61236P)
  • 1-MHz Switching Frequency
  • Softstart, Current Limit, Over Voltage and Over Thermal Protections
  • 2.5 mm x 2.5 mm VQFN Package

2 Applications

  • Power Banks, Battery Backup Units
  • USB Charging Port
  • USB Type-C
  • Battery Powered USB Hub
  • Tablet PCs
  • Battery Powered Products

3 Description

The TPS6123x is a high current, high efficiency synchronous boost converter with constant output current feature for single cell Li-Ion and Li-polymer battery powered products, in a wide range of power bank, tablet, and other portable devices. The IC integrates 14-mΩ/14-mΩ power switches and is capable of delivering up to a 3.5-A output current for 3.3-V to 5-V conversion with up to 97% high efficiency. The device supports a programmable constant output current to control power delivery, so to save power path components and lower total system thermal dissipation effectively.

The device only consumes a 10-µA quiescent current under a light load condition, and can report load status to the system, which make it very suitable for Always-On applications. With the TPS6123x, a simple and flexible system design can be achieved, eliminating external power path components, saving PCB space, and reducing BOM cost.

In shutdown, the output is completely disconnected from the input, and current consumption is reduced to less than 1 µA. Other features like soft start control, reverse current blocking, over voltage protection, and thermal shutdown protection are built-in for system safety.

The devices are available in a 2.5-mm x 2.5-mm VQFN package.

Device Information(1)

TPS61235PVQFN (9) 2.50 mm x 2.50 mm
TPS61236PVQFN (9) 2.50 mm x 2.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.


TPS61235P Typical Application

TPS61235P TPS61236P TypApp.gif

Typical Application Efficiency (TPS61235P)

TPS61235P TPS61236P D002_SLVSCK4.gif