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TPS563231

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4.5-V to 17-V input, 3-A synchronous step-down voltage regulator

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Data sheet

TPS563231

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00022 Duty cycle (max) (%) 87
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00022 Duty cycle (max) (%) 87
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • 3-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
  • 600-kHz switching frequency
  • Low shutdown current Less than 12 µA
  • 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
  • 3-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
  • 600-kHz switching frequency
  • Low shutdown current Less than 12 µA
  • 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

The TPS563231 is a simple, easy-to-use, 3-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, TPS563231 operates in pulse skip mode (PSM), which maintains high efficiency. The TPS563231 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.

The TPS563231 is a simple, easy-to-use, 3-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, TPS563231 operates in pulse skip mode (PSM), which maintains high efficiency. The TPS563231 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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Top documentation Type Title Format options Date
* Data sheet TPS563231 4.5-V to 17-V Input, 3-A Synchronous Step-Down Voltage Regulator in SOT563 datasheet (Rev. B) PDF | HTML 10 Oct 2019
White paper Achieving Fast Load-Transient Response and Low EMI with the AECM DC/DC Control (Rev. A) PDF | HTML 24 Oct 2022
Application note How to Understand LC Table and Select LC About TPS563202 PDF | HTML 17 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Understanding and managing buck regulator output ripple PDF | HTML 18 Jun 2020
Application note How Output Capacitor Reduction Affects Load Transient in TPS563231 13 Aug 2019
Technical article How a small SOT563 DC/DC converter supplies multirail power in industrial applicat PDF | HTML 21 Jan 2019
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 Jan 2013

Design & development

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

Evaluation board

TPS563231EVM-032 — 3-A, synchronous step-down converter evaluation module

The TPS563231 is a simple, easy-to-use, 3 A synchronous step-down converter with Eco-Mode in SOT563-6 package. The TPS563231EVM is a fully assembled and tested circuit for evaluating the TPS563231 step-Down Converter. The TPS563231EVM operates from 4.5-V to 17-V input (12-V nominal) and provides a (...)
User guide: PDF | HTML
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Simulation model

TPS563231 PSpice Transient Model

SLUM638.ZIP (95 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
SOT-5X3 (DRL) 6 Ultra Librarian
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