TPS563249

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17-V, 3-A, constant 1.4-MHz synchronous step-down voltage regulator

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 3 Iq (Typ) (uA) 260 Switching frequency (Min) (kHz) 1400 Switching frequency (Max) (kHz) 1400 Features Enable, Forced PWM, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, 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-23-THN (DDC) 6 SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)

Features

  • 3-A Converter Integrated 70-mΩ and 30-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
  • Forced Continuous Conduction Mode
  • Constant 1.4-MHz Switching Frequency
  • Low Shutdown Current Less than 10 µA
  • 1% Feedback Voltage Accuracy (25ºC)
  • Startup from Pre-Biased Output Voltage
  • Cycle-by-Cycle Overcurrent Limit
  • Hiccup-mode Overcurrent Protection
  • Non-Latch UVP and TSD Protections
  • Fixed Soft Start: 1.7 ms

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Description

The TPS563249 is a simple, easy-to-use, 3 A synchronous step-down converter in SOT-23 package.

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

This switching regulator employs 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.

TPS563249 operates in Forced Continuous Conduction Mode (FCCM), which maintains fixed 1.4 MHz switching frequency during light load operation and eliminates system interference. The TPS563249 is available in a 6-pin 1.6-mm × 2.9-mm SOT (DDC) 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
* Data sheet TPS563249 17-V, 3-A, Constant 1.4-MHz Synchronous Step-Down Voltage Regulator datasheet (Rev. A) Dec. 14, 2018
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Technical article Understanding and managing buck regulator output ripple Jun. 18, 2020
Technical article Options for reducing the MLCC count for DC/DC switching regulators Sep. 17, 2019
Application note How to Do PCB Modeling For a Power Converter (Rev. A) Apr. 02, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Technical article 3 tips for reducing wireless network interference in access point equipment Oct. 08, 2018
User guide TPS563249EVM-031 17-V, 3-A, Regulator Evaluation Module Jan. 24, 2018
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- Jan. 02, 2013

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

The TPS563249 is a simple, easy-to-use, 3-A synchronous step-down converter in SOT-23 package. The device is optimized to operate with minimum external component counts and also optimized to achieve low standby current. This switch mode power supply (SMPS) device employs D-CAP2 mode control (...)

Features
  • Supports  4.5 V to 17 V Power Bus
  • Synchronous buck converter with integrated FETs
  • DCAP2 control
  • Internal soft start
  • 3-A output current

Design tools & simulation

SIMULATION MODEL Download
SLVMCY3.ZIP (84 KB) - PSpice Model
SIMULATION TOOL Download
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 (...)
Features
  • 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

Package Pins Download
SOT-23-THIN (DDC) 6 View options

Ordering & quality

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