1600-mA, High-Efficiency Step-Down Converter optimized for small solution size


Product details


Vin (Min) (V) 3.25 Vin (Max) (V) 5.5 Vout (Min) (V) 2.85 Vout (Max) (V) 2.85 Iout (Max) (A) 1.6 Iq (Typ) (uA) 5800 Switching frequency (Min) (kHz) 3500 Switching frequency (Max) (kHz) 5250 Features Enable, Light Load Efficiency, Output Discharge, Spread Spectrum, Synchronous Rectification Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

DSBGA (YFF) 6 0 mm² 1.444 x 1.148 open-in-new Find other Buck converters (integrated switch)


  • VIN Range From 3.25V to 5.5V
  • Total Solution Size <12 mm2
  • Three Surface-Mount External Components Required
    (One 0805 MLCC Inductor, Two small Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Spread Spectrum, PWM Frequency Dithering
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Up to 1600mA load current
  • 5.5MHz Regulated Frequency Operation
  • Available in a 6-Pin NanoFree (WCSP)
    • Tablet PC
    • Cell Phones, Smart-Phones
    • Digital TV, WLAN, GPS and Bluetooth Applications
  • open-in-new Find other Buck converters (integrated switch)


    The TPS62684 is 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 TPS62684 is optimized for high efficiency and low output voltage ripple, supports up to 1600-mA load current and allows the use of low cost chip inductor and capacitors. With a input voltage range of 3.25V to 5.5V, the device supports applications powered by Li-Ion batteries as well as 5V rails.

    The TPS62684 operates at a 5.5-MHz switching frequency with PWM 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 2.85V 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.

    open-in-new Find other Buck converters (integrated switch)

    Technical documentation

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    Type Title Date
    * Data sheet TPS62684 1600-mA, High-Efficiency Step-Down Converter Optimized for Smallest Solution Size datasheet Mar. 31, 2014
    Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
    Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
    Application note Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
    Application note Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
    Technical article How to do a BOM review for a low-power DC/DC converter design Feb. 20, 2015
    Application note Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
    User guide TPS62684EVM-647 User's Guide Apr. 08, 2014
    Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
    Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

    Design & development

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    Hardware development

    document-generic User guide

    The TPS62684EVM-647 is designed to help the user easily evaluate and test the operation and functionality of the TPS62684. The EVM converts up to a 5.5-V input voltage to a 2.85-V regulated output voltage at up to 1.6A of output current. The TPS62684 supports a total solution size of 12 mm2.

    • Up to 5.5V Input Voltage Range
    • 2.85V Output Voltage
    • 1.6A Output Current
    • 12 mm2 total solution size

    Design tools & simulation

    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    GERBER FILE Download
    SLVC568.ZIP (182 KB)

    CAD/CAE symbols

    Package Pins Download
    DSBGA (YFF) 6 View options

    Ordering & quality

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