Product details

Vin (Min) (V) 3.5 Vin (Max) (V) 42 Vout (Min) (V) 0.8 Vout (Max) (V) 39 Iout (Max) (A) 0.5 Iq (Typ) (uA) 116 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2500 Features Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 3.5 Vin (Max) (V) 42 Vout (Min) (V) 0.8 Vout (Max) (V) 39 Iout (Max) (A) 0.5 Iq (Typ) (uA) 116 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2500 Features Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
HVSSOP (DGQ) 10 9 mm² 3 x 3
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-Mode™
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD™
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-Mode™
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD™
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)

The TPS54040 device is a 42-V, 0.5-A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.

The TPS54040 device is a 42-V, 0.5-A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.

Download

Similar products you might be interested in

open-in-new Compare products
Same functionality with different pin-out to the compared device.
TPS560430 ACTIVE SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode Next-generation 36-V, 600-mA buck regulator with high-efficiency sleep mode.

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ datasheet (Rev. B) 15 Jan 2016
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Understanding Eco-mode(TM) Operation 05 Dec 2016
Application note Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 05 Mar 2015
Application note Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A 17 Apr 2013
Application note Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26 Oct 2012
Application note Level Shifting Control for an Inverting Buck-boost 10 Oct 2012
White paper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) 28 Mar 2012
EVM User's guide TPS54040EVM-456 0.5-A, SWIFT™ Regulator Evaluation Module 20 Mar 2009

Design & development

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

Evaluation board

TPS54040EVM-456 — TPS54040 42V Input, 5V Output, 0.5A Evaluation Module

The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated (...)
Simulation model

TPS54040 PSpice Transient Model

SLIM069.ZIP (66 KB) - PSpice Model
Simulation model

TPS54040 TINA-TI Transient Spice Model

SLIM277.ZIP (68 KB) - TINA-TI Spice Model
Simulation model

TPS54040 TINA-TI Transient Reference Design

SLIM278.TSC (482 KB) - TINA-TI Reference Design
Simulation model

TPS54040 PSpice Average Model

SLVM913.ZIP (85 KB) - PSpice Model
Simulation model

TPS54040 Unencrypted PSpice Average Model

SLVMCU4.ZIP (1 KB) - PSpice Model
Simulation model

TPS54040 Unencrypted PSpice Transient Model

SLVMD06.ZIP (7 KB) - PSpice Model
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 (...)
Calculation tool

SWIFTINV-CALC — Inverting Power Supply Calculator for SWIFT DC/DC with Integrated FETs

The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
Calculation tool

SWIFTPOSNEG-CALC — Positive and Negative Output Voltage Split Rail Calculator for SWIFT DC/DC Converters

The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.

This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)

Reference designs

PMP7220 — Boost Power Supply for Automotive eCall System

This design is a buck converter for automotive as well as for non-automotive applications. It delivers an output voltage of 5.0V @ 70mA at an input voltage range of 9-14V. It can withstand input peaks up to 40V.
Reference designs

PMP8538 — 3.3V @ 0.3A Buck Converter

This design is a buck converter for automotive as well as for non-automotive applications. It delivers an output voltage of 3.3V @ 0.3A at an input voltage range of 9-14V. It can withstand input peaks up to 40V.
Package Pins Download
HVSSOP (DGQ) 10 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos