Product details

Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 5 Iq (Typ) (uA) 455 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Power Good, Synchronous Rectification, Tracking, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 140 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 5 Iq (Typ) (uA) 455 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Power Good, Synchronous Rectification, Tracking, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 140 Rating Catalog Regulated outputs (#) 1
WQFN (RTE) 16 9 mm² 3 x 3
  • Two 30 mΩ (typical) MOSFETs for high efficiency
    at 5-A loads
  • 200kHz to 2MHz Switching Frequency
  • 0.6 V Voltage Reference With ± 1% Initial Accuracy
  • Adjustable Slow Start / Sequencing
  • UV and OV Power Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-up into Pre-Biased Output
  • Cycle by Cycle Current Limit, Thermal and Frequency
    Fold Back Protection
  • –40°C to 140°C Operating Junction
    Temperature Range
  • Thermally Enhanced 3mm × 3mm 16-pin QFN
  • Two 30 mΩ (typical) MOSFETs for high efficiency
    at 5-A loads
  • 200kHz to 2MHz Switching Frequency
  • 0.6 V Voltage Reference With ± 1% Initial Accuracy
  • Adjustable Slow Start / Sequencing
  • UV and OV Power Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-up into Pre-Biased Output
  • Cycle by Cycle Current Limit, Thermal and Frequency
    Fold Back Protection
  • –40°C to 140°C Operating Junction
    Temperature Range
  • Thermally Enhanced 3mm × 3mm 16-pin QFN

The TPS54519 device is a full featured 6 V, 5 A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54519 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.

Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency fold back and thermal shutdown protects the device during an overcurrent condition.

The TPS54519 is supported in the SwitcherPro Software Tool at www.ti.com/switcherpro.

For more SWIFT documentation, see the TI website at www.ti.com/swift.

The TPS54519 device is a full featured 6 V, 5 A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54519 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.

Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency fold back and thermal shutdown protects the device during an overcurrent condition.

The TPS54519 is supported in the SwitcherPro Software Tool at www.ti.com/switcherpro.

For more SWIFT documentation, see the TI website at www.ti.com/swift.

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Technical documentation

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Type Title Date
* Data sheet 2.95-V to 6-V Input, 5-A Synchronous Step Down SWIFT Converter datasheet (Rev. A) 13 Dec 2013
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
User guide TPS54519EVM-037, 5-A, SWIFT(TM) Regulator Evaluation Module 15 Aug 2011

Design & development

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

Evaluation board

TPS54478EVM-037 — Evaluation Module for TPS54478 Synchronous Step-Down Converter with Pre-bias Start-Up

The TPS54478EVM-037 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54478 Synchronous Step-Down Switcher. The EVM operates from a 3V to 6V supply and provides a 1.8V output at 4A.
In stock
Limit: 1
Evaluation board

TPS54519EVM-037 — Evaluation Module for TPS54519 Synchronous Step-Down Converter

The TPS54519EVM-037 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54519 Synchronous Step-Down Converter. The EVM operates from a 3V to 6V supply and provides a 1.8V output at 5A.
In stock
Limit: 1
Simulation model

TPS54519 Unencrypted PSpice Average Model Package (Rev. B)

SLVM377B.ZIP (287 KB) - PSpice Model
Simulation model

TPS54519 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMA72A.ZIP (836 KB) - PSpice Model
Simulation model

TPS54519 TINA-TI Steady State Reference Design (Rev. A)

SLVMB99A.TSC (391 KB) - TINA-TI Reference Design
Simulation model

TPS54519 TINA-TI Startup Reference Design

SLVMBA0.TSC (392 KB) - TINA-TI Reference Design
Simulation model

TPS54519 TINA-TI Transient Spice Model

SLVMBA1.ZIP (50 KB) - TINA-TI Spice Model
Simulation model

TPS54519 TINA-TI Average Reference Design

SLVMBS8.TSC (106 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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