SLVSBR0C October   2014  – June 2015 TPS8268090 , TPS8268105 , TPS8268120 , TPS8268150 , TPS8268180

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  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 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Soft Start
      2. 8.3.2 Undervoltage Lockout
      3. 8.3.3 Short-Circuit Protection
      4. 8.3.4 Thermal Shutdown
      5. 8.3.5 Enable
      6. 8.3.6 MODE Pin
    4. 8.4 Device Functional Modes
      1. 8.4.1 Spread Spectrum, PWM Frequency Dithering
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input Capacitor Selection
        2. 9.2.2.2 Output Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Surface Mount Information
    4. 11.4 Thermal and Reliability Information
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 References
    2. 12.2 Related Links
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Summary
    2. 13.2 MicroSiP™ DC/DC Module Package Dimensions

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • SIP|9
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Wide VIN Range From 2.5V to 5.5V
  • Total Solution Size < 6.7 mm2
  • Sub 1-mm Profile Solution
  • ±1.5% DC Voltage Accuracy
  • Up to 1600-mA Load Current
  • Up to 90% Efficiency
  • Fixed Output Voltage:
    • TPS8268180: 1.80V
    • TPS8268150: 1.50V
    • TPS8268120: 1.20V
    • TPS8268105: 1.05V
    • TPS8268090: 0.90V
  • Low EMI by Spread Spectrum PWM Frequency Dithering
  • Best in Class Load and Line Transient Response
  • Internal Soft Start
  • Current Overload and Thermal Shutdown Protection

2 Applications

  • Optical Modules
  • Cell Phones, Smart-Phones
  • Solid State Disk Drive Applications
  • Space constrained applications

3 Description

The TPS8268x device is a complete DC/DC step-down power supply optimized for small solution size. Included in the package are the switching regulator, inductor and input/output capacitors. Integration of all passive components enables a tiny solution size of only 6.7mm2.

The TPS8268x is based on a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS8268x is optimized for high efficiency and low output voltage ripple and supports up to 1600-mA load current. With an input voltage range of 2.5-V to 5.5-V, the device supports applications powered by Li-Ion batteries as well as 5-V and 3.3-V rails.

The TPS8268x operates at a 5.5-MHz switching frequency with spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a fixed output voltage, requiring no external feedback network.

These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency with the same size.

The TPS8268x is packaged in a compact (2.3mm x 2.9mm) and low profile BGA package suitable for automated assembly by standard surface mount equipment.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS8268180 µSIP 2.30 mm × 2.90 mm
TPS8268150 µSIP 2.30 mm × 2.90 mm
TPS8268120 µSIP 2.30 mm × 2.90 mm
TPS8268105 µSIP 2.30 mm × 2.90 mm
TPS8268090 µSIP 2.30 mm × 2.90 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

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Typical Application

TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 FP_sch2_TPS8268180.gif

Efficiency vs Load Current for TPS8268180

TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C006_SLVSBR0.png