4.5-V to 17-V input, 2-A output, synchronous step-down converter


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iq (Typ) (mA) 0.22 Iq (Typ) (uA) 220 Switching frequency (Min) (kHz) 850 Switching frequency (Max) (kHz) 850 Features Light Load Efficiency, Over Current Protection, Soft Start Fixed, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-5X3 (DRL) 6 2 mm² 1.65 x 1.2 open-in-new Find other Buck converters (integrated switch)


  • 2-A converter integrated 95-mΩ and 55-mΩ FETs
  • D-CAP3™ Mode Control with fast transient response
  • Input voltage range: 4.5 V to 17 V
  • Output voltage range: 0.6 V to 7 V
  • Pulse skip mode
  • 850-kHz switching frequency
  • Low shutdown current less than 2 µA (typical)
  • 2% feedback voltage accuracy (25ºC)
  • Startup from pre-biased output voltage
  • Cycle-by-cycle over current limit
  • Hiccup-mode over current protection
  • Non-latch UVP and TSD protections
  • 6-pin SOT563 package
  • Precision enable
  • Pin-to-pin compatible with TPS563231

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The TPS562231 is a simple, easy-to-use, 2-A synchronous step-down converter in SOT563 package.

The device is optimized to operate with minimum external component counts, and also optimized to achieve low standby current.

These switch mode power supply (SMPS) devices employ D-CAP3 mode control providing a fast transient response and supporting both low-equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

During light load operation, TPS562231 operates in pulse skip mode (PSM), which maintains high efficiency. The TPS562231 is available in a 6-pin 1.6-mm × 1.6-mm SOT563 (DRL) package, and specified from a –40°C to 125°C junction temperature.

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Technical documentation

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Type Title Date
* Datasheet TPS562231 4.5-V to 17-V Input, 2-A Synchronous Step-Down Buck Converter in SOT563 datasheet (Rev. B) Oct. 14, 2019
Technical articles Understanding and managing buck regulator output ripple Jun. 18, 2020
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Technical articles Tips for making your embedded system’s power rail design smaller Sep. 23, 2019
Application notes How Output Capacitor Reduction Affects Load Transient in TPS563231 Aug. 13, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guides TPS562231EVM 2-A, Synchronous step-down converter evaluation module Feb. 20, 2019
Technical articles How a small SOT563 DC/DC converter supplies multirail power in industrial applications Jan. 21, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The TPS562231 is a simple, easy-to-use, 2-A synchronous step-down converter with Eco-Mode in SOT563-6 package. The TPS562231 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS562231 step-down converter. The TPS562231EVM operates from 4.5-V to 17-V input (...)
  • 4.5-V to 17-V input voltage range
  • Accurate 5.5-V output
  • Up to 2-A output current
  • Switching frequency 600 KHz
  • DCAP3 control
  • PFM, Eco-Mode™

Design tools & simulation

SLUM682.ZIP (89 KB) - PSpice Model
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
  • (...)

CAD/CAE symbols

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Ordering & quality

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