Product details

Vin (Min) (V) 9 Vin (Max) (V) 75 Vout (Min) (V) 2.5 Vout (Max) (V) 73 Iout (Max) (A) 0.5 Iq (Typ) (uA) 500 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 800 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 9 Vin (Max) (V) 75 Vout (Min) (V) 2.5 Vout (Max) (V) 73 Iout (Max) (A) 0.5 Iq (Typ) (uA) 500 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 800 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
VSSOP (DGK) 8 15 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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Design & development

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Evaluation board

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

LM5007 High Voltage (80 V) Step Down Switching Regulator

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Simulation model

LM5007 PSpice Transient Model

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

LM5007 Unencrypted PSpice Transient Model

SNVMAL6.ZIP (2 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

LM5007QUICK-CALC — LM5007 Quick Start Calculator

Reference designs

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

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VSSOP (DGK) 8 View options
WSON (NGT) 8 View options

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