SLVSAC3D May   2011  – December 2014 TPS62730 , TPS62732 , TPS62733

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  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 DCS-Control™
      2. 9.3.2 ON/BYP Mode Selection
      3. 9.3.3 STAT Open-Drain Output
    4. 9.4 Device Functional Modes
      1. 9.4.1 Start-Up
      2. 9.4.2 Automatic Transition from DC-DC to Bypass Operation
      3. 9.4.3 Internal Current Limit
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Output Filter Design (Inductor and Output Capacitor)
        2. 10.2.2.2 Inductor Selection
        3. 10.2.2.3 DC-DC Output Capacitor Selection
        4. 10.2.2.4 Additional Decoupling Capacitors
        5. 10.2.2.5 Input Capacitor Selection
          1. 10.2.2.5.1 Input Buffer Capacitor Selection
        6. 10.2.2.6 Checking Loop Stability
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
  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

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ

1 Features

  • Input Voltage Range VIN From 1.9 V to 3.9 V
  • Typ. 30-nA Ultra Low-Power Bypass Mode
  • Typ. 25-μA DC-DC Quiescent Current
  • Internal Feedback Divider Disconnect
  • Typical 2.1-Ω Bypass Switch Between VIN and VOUT
  • Automatic Transition from DC-DC to Bypass Mode
  • Up to 3-MHz Switch Frequency
  • Up to 95% DC-DC Efficiency
  • Open-Drain Status Output STAT
  • Output Peak Current up to 100 mA
  • Fixed Output Voltages 1.9 V, 2.05 V, 2.1 V, 2.3 V
  • Small External Output Filter Components 2.2 μH and 2.2 μF
  • Optimized For Low Output Ripple Voltage
  • Small 1 × 1.5 × 0.6-mm3 USON Package
  • 12-mm2 Minimum Solution Size

2 Applications

  • CC2540 Bluetooth™ Low-Energy
    System-On-Chip Solution
  • Low-Power Wireless Applications
  • RF4CE, Metering

3 Description

The TPS62730 is a high frequency synchronous step-down DC-DC converter optimized for ultra low-power wireless applications. The device is optimized to supply TI's Low-Power Wireless sub 1-GHz and 2.4-GHz RF transceivers and System-On-Chip (SoC) solutions. The TPS62730 reduces the current consumption drawn from the battery during TX and RX mode by a high efficient step-down voltage conversion. The device provides an output current of up to 100 mA and allows the use of tiny and low-cost chip inductors and capacitors. With an input voltage range of 1.9 V to 3.9 V, the device supports Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2, and also two cell alkaline batteries.

The TPS62730 features an Ultra Low-Power bypass mode with typical 30-nA current consumption to support sleep and low power modes of TI's CC2540 Bluetooth Low Energy and CC430 SoC solutions. In this bypass mode, the output capacitor of the DC-DC converter is connected through an integrated typical 2.1-Ω bypass switch to the battery.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS62730 USON (6) 1.45 mm x 1.00 mm
TPS62732
TPS62733
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application

apps_dwg_lvsac3.gif

Battery Current Reduction Using TPS62730

batcur_cc2540_lvsac3.gif