SLVSBO4C October 2012  – December 2014 TPS62736 , TPS62737

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Device Voltage Options
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1Absolute Maximum Ratings
    2. 8.2Handling Ratings
    3. 8.3Recommended Operating Conditions
    4. 8.4Thermal Information
    5. 8.5Electrical Characteristics
    6. 8.6Typical Characteristics
  9. Detailed Description
    1. 9.1Overview
    2. 9.2Functional Block Diagram
    3. 9.3Feature Description
      1. 9.3.1Step-Down (Buck) Converter Operation
      2. 9.3.2Programming OUT Regulation Voltage and VIN_OK
      3. 9.3.3Nano-Power Management and Efficiency
    4. 9.4Device Functional Modes
      1. 9.4.1Enable Controls
      2. 9.4.2Startup Behavior
  10. 10Application and Implementation
    1. 10.1Application Information
    2. 10.2Typical Applications
      1. 10.2.1TPS62737 3-Resistor Typical Application Circuit
        1. 10.2.1.1Design Requirements
        2. 10.2.1.2Detailed Design Procedure
          1. 10.2.1.2.1Inductor Selection
          2. 10.2.1.2.2Output Capacitor Selection
          3. 10.2.1.2.3Input Capacitor Selection
          4. 10.2.1.2.4Resistor Selection
        3. 10.2.1.3Application Curves
      2. 10.2.2TPS62736 4-Resistor Typical Application Circuit
        1. 10.2.2.1Design Requirements
        2. 10.2.2.2Detailed Design Procedure
        3. 10.2.2.3Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1Layout Guidelines
    2. 12.2Layout Example
  13. 13Device and Documentation Support
    1. 13.1Device Support
      1. 13.1.1Third-Party Products Disclaimer
    2. 13.2Related Links
    3. 13.3Trademarks
    4. 13.4Electrostatic Discharge Caution
    5. 13.5Glossary
  14. 14Mechanical, Packaging, and Orderable Information

1 Features

  • Industry's Highest Efficiency at Low Output Currents: > 90% With IOUT = 15 µA
  • Ultra-Low Power Buck Converter
    • TPS62736 Optimized for 50-mA Output Current
    • TPS62737 Optimized for 200-mA Output Current
    • 1.3-V to 5-V Resistor Programmable Output Voltage Range
    • 2-V to 5.5-V Input Operating Range
    • 380-nA and 375-nA Quiescent Current During Active Operation for TPS62736 and TPS62737
    • 10-nA Quiescent Current During Ship Mode Operation
    • 2% Voltage Regulation Accuracy
  • 100% Duty Cycle (Pass Mode)
  • EN1 and EN2 Control
    • Two Power-Off States:
      1. Shipmode (Full Power-Off State)
      2. Standby Mode Includes VIN_OK Indication
  • Input Power-Good Indication (VIN_OK)
    • Push-Pull Driver
    • Resistor Programmable Threshold Level

2 Applications

  • Ultra-Low Power Applications
  • 2-Cell and 3-Cell Alkaline-Powered Applications
  • Energy Harvesting
  • Solar Chargers
  • Thermal Electric Generator (TEG) Harvesting
  • Wireless Sensor Networks (WSN)
  • Low-Power Wireless Monitoring
  • Environmental Monitoring
  • Bridge and Structural Health Monitoring (SHM)
  • Smart Building Controls
  • Portable and Wearable Health Devices
  • Entertainment System Remote Controls

3 Description

The TPS6273x family provides a highly integrated ultra low power buck converter solution that is well suited for meeting the special needs of ultra-low power applications such as energy harvesting. The TPS6273x provides the system with an externally programmable regulated supply to preserve the overall efficiency of the power-management stage compared to a linear step-down converter. This regulator is intended to step-down the voltage from an energy storage element such as a battery or super capacitor to supply the rail to low-voltage electronics. The regulated output has been optimized to provide high efficiency across low-output currents (<10 µA) to high currents (200 mA).

The TPS6273x integrates an optimized hysteretic controller for low-power applications. The internal circuitry uses a time-based sampling system to reduce the average quiescent current.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TPS6273xVQFN (14)3.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.
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Efficiency vs Output Current

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