SLVSCK4A September   2015  – May 2016 TPS61235P , TPS61236P

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature 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. 8.3.4.1 Constant Voltage Operation
        2. 8.3.4.2 Output Current Monitor
        3. 8.3.4.3 Constant 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. 8.3.10 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 PWM Mode
      2. 8.4.2 PFM Mode
      3. 8.4.3 CV Mode and CC Mode
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 TPS61236P 3-V to 4.35-V Input, 5-V Output Voltage, 3-A Maximum Output Current
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Programming the Output Voltage
          2. 9.2.1.2.2 Program the Constant Output Current
          3. 9.2.1.2.3 Inductor and Capacitor Selection
            1. 9.2.1.2.3.1 Inductor Selection
            2. 9.2.1.2.3.2 Output Capacitor Selection
            3. 9.2.1.2.3.3 Input Capacitor Selection
          4. 9.2.1.2.4 Loop Stability, Feed Forward Capacitor
          5. 9.2.1.2.5 INACT Pin Pull-up Resistor
        3. 9.2.1.3 TPS61236P 5-V Output Application Curves
      2. 9.2.2 TPS61236P 2.3-V to 5-V Input, 5-V 2-A Output Converter
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 TPS61236P 5-V Output Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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订购信息

6 Pin Configuration and Functions

RWL Package
9-Pin VQFN
Top View
TPS61235P TPS61236P Package_SLVSCK4.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NUMBER
PGND 1 PWR Power ground.
SW 2 PWR The switch pin of the boost converter. It is connected to the drain of the internal Power MOSFETs.
VIN 3 I IC power supply input.
CC 4 I Constant output current programming pin. Connect a resistor to this pin to program the constant output current. A capacitor should be connected in parallel to stabilize the control loop. Connect this pin to the AGND pin to disable the constant output current function.
AGND 5 I/O Analog ground.
FB 6 I Voltage feedback pin of adjustable version (TPS61236P). Must be connected to VOUT pin on fixed output voltage version (TPS61235).
EN 7 I Enable logic input. Logic high enables the device. Logic low disables the device and puts it in shutdown mode. This pin must be terminated and cannot be left floating. An external pull down resistor connected to this pin is recommended.
INACT 8 O Load status indication. Open drain output. Can be left float or connected to AGND pin if not used.
VOUT 9 PWR Boost converter output.