5.5V to 36V Input, 5A, 500kHz Step Down Converter


Product details


Vin (Min) (V) 5.5 Vin (Max) (V) 36 Vout (Min) (V) 1.22 Vout (Max) (V) 31 Iout (Max) (A) 5 Iq (Typ) (mA) 3 Iq (Typ) (uA) 3000 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Buck converters (integrated switch)


  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 5-A Continuous (6-A Peak) Output Current
  • High Efficiency Greater Than 90% Enabled by 110-mΩ
    Integrated MOSFET Switch
  • Wide Output Voltage Range: Adjustable Down to 1.22 V
    With 1.5% Initial Accuracy
  • Internal Compensation Minimizes External Part Count
  • Fixed 500-kHz Switching Frequency for Small Filter Size
  • 18-µA Shutdown Supply Current
  • Improved Line Regulation and Transient Response by Input
    Voltage Feed Forward
  • System Protected by Overcurrent Limiting, Overvoltage
    Protection and Thermal Shutdown
  • –40°C to 125°C Operating Junction
    Temperature Range
  • Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™
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The TPS5450 is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 μA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

The TPS5450 device is available in a thermally-enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LM73605 ACTIVE 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter Next-generation 3.5-V to 36-V, 5-A synchronous step-down voltage converter.

Technical documentation

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No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS5450 5-A, Wide Input Range, Step-Down Converter datasheet (Rev. D) Dec. 10, 2014
Application notes Power-supply margining circuit for SMPS using a precision DAC (Rev. A) Sep. 03, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guides TPS5450EVM-254 5-A, Swift Regulator Evaluation Module Apr. 26, 2007
Application notes Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) Mar. 21, 2007

Design & development

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

Hardware development

5A Evaluation Module
document-generic User guide

This evaluation module is designed to demonstrate a typical printed-circuit-board application using the TPS5450 regulator (Vin 10 V - 31 V, up to 5 A). This does not reflect the full range of possible input and output voltages that may be used when designing with this part.

The switching frequency is (...)

  • Input Voltage Range 10 V to 31 V
  • Output Current Range up to 5 A
document-generic User guide
The TUSB319EVM provides a complete reference design, which is a DFP controller ideal for Type-C USB chargers, it supports up to 3A@5V VBUS power signaling and VBUS detection.
  • Supports DFP (Host/Source) Applications with up to 15W Power
  • Supports Type-C Current Mode Advertisement up to 3 A (Default, 1.5 A, 3 A)
  • Channel Configuration (CC), Attach of USB Port Detection, Cable Orientation Detection
  • Supply Voltage 12V or 5V (over micro-B USB2 connector)
  • Compatible to USB (...)

Design tools & simulation

SBAM416.ZIP (42 KB) - TINA-TI Reference Design
SLIM218.TSC (62 KB) - TINA-TI Reference Design
SLIM219.TSM (12 KB) - TINA-TI Spice Model
SLVM679.ZIP (200 KB) - PSpice Model
SLVMCV0.ZIP (3 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
  • (...)

Reference designs

FPGA/ DDR2 Supply
PMP5712 — The PMP5712.1 is the first block of a FPGA/DDR2 power supply. This block provide 5V @ 300mA, 1Amax from 8V…14V input voltage. An external 0…12V input enables the converter.

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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