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AC/DC & DC/DC converters (integrated FET)

LM5007

ACTIVE

9-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator

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Data sheet

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LM5007

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 73 Iq (typ) (µA) 500 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 73 Iq (typ) (µA) 500 Duty cycle (max) (%) 99
VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • Internal High-Voltage VCC Regulator
    • Adjustable Output Voltage
    • High Efficiency Operation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop Compensation Required
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with Input Voltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • External Shutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer
  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • Internal High-Voltage VCC Regulator
    • Adjustable Output Voltage
    • High Efficiency Operation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop Compensation Required
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with Input Voltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • External Shutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

The LM5007 0.5-A step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. The device is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSON packages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no loop compensation and provides fast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This current limiting scheme ensures short-circuit protection while providing reduced load current foldback. Other protection features include thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and maximum duty cycle limiter.

The LM5007 0.5-A step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. The device is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSON packages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no loop compensation and provides fast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This current limiting scheme ensures short-circuit protection while providing reduced load current foldback. Other protection features include thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and maximum duty cycle limiter.
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Technical documentation

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Type Title Date
* Data sheet LM5007 75-V, 0.5-A DC/DC Buck Converter With 80-V Integrated Power MOSFET datasheet (Rev. H) PDF | HTML 06 Nov 2018
Application note Stability Analysis and Design of COT Type-3 Ripple Circuit 20 Mar 2019
Technical article Simplifying 100V wide VIN power conversion PDF | HTML 11 Nov 2016
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 Sep 2013
EVM User's guide AN-1298 LM5007 Evaluation Board (Rev. A) 30 Apr 2013
Application note Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) 30 Apr 2013
Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 23 Apr 2013
More literature LM5007 Quick Start Calculator 27 Jan 2012

Design & development

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

Evaluation board

LM5007EVAL — 80V Wide Vin Step Down Switching Regulator Evaluation Board

LM5007 High Voltage (80 V) Step Down Switching Regulator

User guide: PDF
Not available on TI.com
Simulation model

LM5007 PSpice Transient Model

SNVM301.ZIP (84 KB) - PSpice Model
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Simulation model

LM5007 Unencrypted PSpice Transient Model

SNVMAL6.ZIP (2 KB) - PSpice Model
Download
Calculation tool

LM5007QUICK-CALC — LM5007 Quick Start Calculator

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Reference designs

TIDA-00290 — PoE PSE Type 2 (30W) IEEE 802.3at Fully Autonomous Quad Port Solution.

This reference design is fully autonomous IEEE802.3at, Type-2 (30 W) Power-over-Ethernet (PoE) 4-port power sourcing equipment (PSE). An additional configuration of two non-standard, high-power ports (<60 W) is provided. Both configurations support gigabit Ethernet data pass through in (...)
Schematic: PDF
Reference designs

PMP23320 — 500-W interleaved SEPIC reference design

This 500-W interleaved SEPIC converter reference design supplies a non-isolated adjustable 5 V to 110 V output voltage with a maximum output current of 5 A. The main power stage uses two LM5122 controllers to power the primary and secondary phases of the SEPIC. A LM5007 buck converter is used to (...)
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
VSSOP (DGK) 8 Ultra Librarian
WSON (NGT) 8 Ultra Librarian
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