SLVS510E July   2006  – March 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Typical Application Circuit
  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
      1. 8.6.1 Table of Graphs
  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
        1. 10.3.1.1 Synchronous Rectifier
        2. 10.3.1.2 Device Enable
        3. 10.3.1.3 Undervoltage Lockout
        4. 10.3.1.4 Soft Start and Short-Circuit Protection
    4. 10.4 Device Functional Modes
      1. 10.4.1 Power-Save Mode
  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 Inductor Selection
        3. 11.2.2.3 Capacitor Selection
          1. 11.2.2.3.1 Input Capacitor
          2. 11.2.2.3.2 Output Capacitor
        4. 11.2.2.4 Small Signal Stability
      3. 11.2.3 Application Curves
    3. 11.3 System Examples
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    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

  • 90% Efficient Synchronous Boost Converter
    • 75-mA Output Current at 3.3 V From 0.9-V Input
    • 150-mA Output Current at 3.3 V From 1.8-V Input
  • Device Quiescent Current: 19 µA (Typ)
  • Input Voltage Range: 0.9 V to 5.5 V
  • Adjustable Output Voltage Up to 5.5 V
  • Power-Save Mode Version Available for
    Improved Efficiency at Low Output Power
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Small 6-Pin Thin SOT23 Package

2 Applications

  • All One-Cell, Two-Cell, and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li
    Battery-Powered Products
  • Portable Audio Players
  • PDAs
  • Cellular Phones
  • Personal Medical Products
  • White LED Lighting

3 Description

The TPS6107x devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery. Output currents can go as high as 75 mA while using a single-cell alkaline, and discharge it down to 0.9 V. It can also be used for generating 5 V at 200 mA from a 3.3-V rail or a Li-ion battery. The 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 TPS61070 and TPS61073 enter the power-save mode to maintain a high efficiency over a wide load current range. The power-save mode is disabled in the TPS61071 and TPS61072, forcing the converters to operate at a fixed switching frequency. The maximum peak current in the boost switch is typically limited to a value of 600 mA.

The TPS6107x output voltage is programmed by an external resistor divider. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. The device is packaged in a 6-pin thin SOT23 package (DDC).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61070 SOT (6) 2.90 mm x 1.60 mm
TPS61071
TPS61072
TPS61073
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Typical Application Circuit

TPS61070 TPS61071 TPS61072 TPS61073 typ_app_fp_lvs510.gif