SLVS413L October   2002  – August 2026 TPS61040 , TPS61041

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Peak Current Control
      2. 6.3.2 Soft Start
      3. 6.3.3 Enable
      4. 6.3.4 Undervoltage Lockout
      5. 6.3.5 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Inductor Selection, Maximum Load Current
        2. 7.2.2.2 Setting the Output Voltage
        3. 7.2.2.3 Line and Load Regulation
        4. 7.2.2.4 Output Capacitor Selection
        5. 7.2.2.5 Input Capacitor Selection
        6. 7.2.2.6 Diode Selection
      3. 7.2.3 Application Curves
    3. 7.3 System Examples
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

3 Description

The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is designed to generate output voltages up to 28V from a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generate standard 3.3V or 5V to 12V power conversions.

The TPS6104x operates with a switching frequency up to 1MHz. This frequency allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin WSON package, the TPS6104x gives a very small overall design size. The TPS61040 device has an internal 400mA switch current limit, while the TPS61041 device has a 250mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications. The low quiescent current (typically 28μA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

Device Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2)
TPS61040 DBV (SOT-23, 5) 2.9mm × 2.8mm
DDC (SOT-23-THN, 5) 2.9mm × 2.8mm
DRV (WSON, 6) 2mm × 2mm
TPS61041 DBV (SOT-23, 5) 2.9mm × 2.8mm
DRV (WSON, 6) 2mm × 2mm
(1) For more information, see Section 10.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPS61040 TPS61041 Typical Application Schematic Typical Application Schematic