SLUS534G September   2002  – March 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Controller Circuit
      2. 10.3.2 Synchronous Rectifier
    4. 10.4 Device Functional Modes
      1. 10.4.1 Device Enable
        1. 10.4.1.1 Undervoltage Lockout
      2. 10.4.2 Softstart
      3. 10.4.3 Power Save Mode And Synchronization
      4. 10.4.4 Low Battery Detector Circuit—LBI/LBO
      5. 10.4.5 Low-EMI Switch
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Programming The Output Voltage
        2. 11.2.2.2 Programming The LBI/LBO Threshold Voltage
        3. 11.2.2.3 Inductor Selection
        4. 11.2.2.4 Capacitor Selection
          1. 11.2.2.4.1 Input Capacitor
          2. 11.2.2.4.2 Output Capacitor
            1. 11.2.2.4.2.1 Small Signal Stability
      3. 11.2.3 Application Curves
      4. 11.2.4 System Examples
        1. 11.2.4.1 Power Supply Solution For Maximum Output Power
        2. 11.2.4.2 Power Supply Solution With Auxiliary Positive Output Voltage
        3. 11.2.4.3 Power Supply Solution with Auxiliary Negative Output Voltage
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Considerations
    2. 13.2 Layout Example
    3. 13.3 Thermal Considerations
  14. 14Device and Documentation Support
    1. 14.1 Device Support
      1. 14.1.1 Third-Party Products Disclaimer
    2. 14.2 Related Links
    3. 14.3 Trademarks
    4. 14.4 Electrostatic Discharge Caution
    5. 14.5 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

1 Features

  • 96% Efficient Synchronous Boost Converter With 1000-mA Output Current
    From 1.8-V Input
  • Device Quiescent Current: 20-µA (Typ)
  • 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
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Over-Temperature Protection
  • Available in a Small 4 mm x 4 mm QFN-16 or in a TSSOP-16 Package

2 Applications

    All Single Cell Li or Dual Cell Battery Operated Products as MP-3 Player, PDAs, and Other Portable Equipment

3 Description

The TPS6103x devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is either adjusted by an external resistor divider or fixed internally on the chip. It provides high efficient power conversion and is capable of delivering output currents up to 1 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the converter enters Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. It can also operate synchronized to an external clock signal that is applied to the SYNC pin. The maximum peak current in the boost switch is limited to a value of 4500 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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61030 TSSOP (16) 5.00 mm × 4.40 mm
TPS61031
TPS61032
TPS61030 QFN (16) 4.00 mm x 4.00 mm
TPS61031
TPS61032
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Simplified Schematic

TPS61030 TPS61031 TPS61032 typ_app_fb.gif