SLVS644E February   2006  – December 2014 TPS61080 , TPS61081

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 5-V To 12-V, 250-mA Step-Up DC-DC Converter
  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 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Start Up
      2. 9.3.2 Overcurrent and Short Circuit Protection
      3. 9.3.3 Overvoltage Protection
      4. 9.3.4 Undervoltage Lockout (UVLO)
      5. 9.3.5 Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable
      2. 9.4.2 Frequency Selection
      3. 9.4.3 Maximum and Minimum Output Current
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Program Output Voltage
      2. 10.1.2 Feed Forward Capacitor
      3. 10.1.3 Soft Start Capacitor
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Inductor Selection
        2. 10.2.2.2 Input And Output Capacitor Selection
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
      1. 10.3.1 Torch Light and Flash Light
      2. 10.3.2 24Vout Output Converter
      3. 10.3.3 30 WLEDs Driver in Media Factor Form Display
        1. 10.3.3.1 ±15 V Dual Output Converter
        2. 10.3.3.2 Step-Up DC-DC Converter with Output Doubler
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  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 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 2.5-V to 6-V Input Voltage Range
  • Up to 27-V Output Voltage
  • 0.5-A Integrated Switch (TPS61080)
    1.3-A Integrated Switch (TPS61081)
  • 12-V/400-mA and 24-V/170-mA From 5-V Input (Typical)
  • Integrated Power Diode
  • 1.2-MHz/600-kHz Selectable Fixed Switching Frequency
  • Input-to-Output Isolation
  • Short-Circuit Protection
  • Programmable Soft Start
  • Overvoltage Protection
  • Up to 87% Efficiency
  • 10-Pin 3-mm × 3-mm QFN Package

2 Applications

  • 3.3-V to 12-V, 5-V to 12-V, and 24-V Boost Converter
  • White LED Backlight for Media Form Factor Display
  • OLED Power Supply
  • xDSL Applications
  • TFT-LCD Bias Supply
  • White LED Flash Light

3 Description

The TPS6108x is a 1.2 MHz/600 kHz fixed-frequency boost regulator designed for high integration, which integrates a power switch, an I/O isolation switch, and a power diode. When a short-circuit condition is detected, the isolation switch opens up to disconnect the output from the input. As a result, the IC protects itself and the input source from any pin, except VIN, from being shorted to ground. The isolation switch also disconnects the output from input during shutdown to prevent any leakage current. Other provisions for protection include 0.5 A/1.3 A peak-to-peak overcurrent protection, programmable soft start (SS), over voltage protection (OVP), thermal shutdown, and under voltage lockout (UVLO).

The IC operates from input supplies including single Li-ion battery, triple NiMH, and regulated 5 V, such as USB output. The output can be boosted up to 27 V. TPS6108x can provide the supply voltages of OLED, TFT-LCD bias, 12-V and 24-V power rails. The output of TPS6108x can also be configured as a current source to power up to seven WLEDs in flash light applications.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61080 VSON (10) 3.00 mm × 3.00 mm
TPS61081
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 5-V To 12-V, 250-mA Step-Up DC-DC Converter

typ_app_lvs644.gif