SLVS431C june   2002  – September 2015 TPS61130 , TPS61131

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Available Output Voltage Options
  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 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Controller Circuit
      2. 9.3.2 Synchronous Rectifier
      3. 9.3.3 Device Enable
      4. 9.3.4 Undervoltage Lockout
      5. 9.3.5 Soft-Start
      6. 9.3.6 Power Good
      7. 9.3.7 Low Battery Detector Circuit—LBI/LBO
      8. 9.3.8 Low-EMI Switch
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power Save Mode
      2. 9.4.2 LDO
      3. 9.4.3 LDO Enable
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 Typical Application Circuit for Adjustable Output Voltage Option
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Programming the Output Voltage
            1. 10.2.1.2.1.1 DC-DC Converter
          2. 10.2.1.2.2 LDO
          3. 10.2.1.2.3 Programming the LBI/LBO Threshold Voltage
          4. 10.2.1.2.4 Inductor Selection
          5. 10.2.1.2.5 Capacitor Selection
            1. 10.2.1.2.5.1 Input Capacitor
            2. 10.2.1.2.5.2 Flying Capacitor DC-DC Converter
            3. 10.2.1.2.5.3 Output Capacitor DC-DC Converter
            4. 10.2.1.2.5.4 Small Signal Stability
            5. 10.2.1.2.5.5 Output Capacitor LDO
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Solution for Maximum Output Power
      3. 10.2.3 Low Profile Solution, Maximum Height 1.8 mm
      4. 10.2.4 Single Output Using LDO as Filter
      5. 10.2.5 Dual Input Power Supply Solution
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Consideration
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Related Links
    3. 13.3 Community Resource
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Synchronous, Up to 90% Efficient, SEPIC Converter With 300-mA Output Current From
    2.5-V Input
  • Integrated 200-mA Reverse Voltage Protected LDO for DC-DC Output Voltage Post Regulation or Second Output Voltage
  • 40-μA (Typical) Quiescent Current
  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options up to 5.5 V
  • Power Save Mode for Improved Efficiency at Low-Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4-mm × 4-mm VQFN-16 or in a TSSOP-16 Package

2 Applications

  • All Single Cell Li, Dual or Triple Cell Battery or USB Powered Products as MP-3 Player, PDAs, and Other Portable Equipment
  • Dual Input or Dual Output Mode
  • High Efficient Li-Ion to 3.3-V Conversion

Typical Application Schematic

TPS61130 TPS61131 TPS61132 page1_cir_LVS431.gif

3 Description

The TPS6113x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer, or two- to four-cell Alkaline, NiCd, or NiMH batteries. The devices can generate two regulated output voltages. It provides a simple and efficient buck-boost solution for generating 3.3 V out of an input voltage that can be both higher and lower than the output voltage. The converter provides a maximum output current of at least 300 mA with supply voltages down to 1.8 V. The implemented SEPIC converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the SEPIC switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing, and in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the SEPIC stage provides additional control of any connected circuits like cascaded power supply stages, or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the SEPIC output or directly from the battery. The output voltage of this LDO can be programmed by an external resistor divider or is fixed internally on the chip. The LDO can be enabled separately, that is, using the power good of the SEPIC stage. The device is packaged in a 16-pin VQFN package measuring 4 mm × 4 mm (RSA) or in a 16-pin TSSOP (PW) package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61130 TSSOP (16) 5.00 mm × 4.40 mm
VQFN (16) 4.00 mm × 4.00 mm
TPS61131 TSSOP (16) 5.00 mm × 4.40 mm
TPS61132
  1. For all available packages, see the orderable addendum at the end of the data sheet.