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LM5006

ACTIVE

6-75V Wide Vin, 600mA Constant On-Time Non-Synchronous Buck Regulator

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Product details

Vin (min) (V) 6 Vin (max) (V) 75 Vout (min) (V) 2.5 Vout (max) (V) 75 Iout (max) (A) 0.65 Iq (typ) (mA) 1 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection, Power good, UVLO adjustable Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (max) (%) 99 Type Converter
Vin (min) (V) 6 Vin (max) (V) 75 Vout (min) (V) 2.5 Vout (max) (V) 75 Iout (max) (A) 0.65 Iq (typ) (mA) 1 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection, Power good, UVLO adjustable Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (max) (%) 99 Type Converter
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • Operating Input Voltage Range: 6V to 75V
  • Integrated 80V, N-Channel Buck Switch
  • Internal Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with Line and Load Variations
  • Adjustable Output Voltage from 2.5V
  • Precision Internal Reference, ±2.5%
  • Intelligent Current Limit Reduces Foldback
  • Programmable Input UV Detector with Status Flag Output
  • Gate Output Driver for Synchronous Rectifier
  • Pre-Charge Switch Enables Bootstrap Gate Drive with no Load
  • Thermal Shutdown

Package

  • VSSOP - 10

All trademarks are the property of their respective owners.

  • Operating Input Voltage Range: 6V to 75V
  • Integrated 80V, N-Channel Buck Switch
  • Internal Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with Line and Load Variations
  • Adjustable Output Voltage from 2.5V
  • Precision Internal Reference, ±2.5%
  • Intelligent Current Limit Reduces Foldback
  • Programmable Input UV Detector with Status Flag Output
  • Gate Output Driver for Synchronous Rectifier
  • Pre-Charge Switch Enables Bootstrap Gate Drive with no Load
  • Thermal Shutdown

Package

  • VSSOP - 10

All trademarks are the property of their respective owners.

The LM5006 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient Buck bias regulator. This high voltage regulator contains an 80V N-Channel MOSFET Switch and a startup regulator. The device is easy to implement and is provided in an VSSOP-10 package. The regulator’s control scheme uses an on-time inversely proportional to VIN. This feature results in the operating frequency remaining relatively constant with line and load variations. The control scheme requires no loop compensation, resulting in fast transient response. An intelligent current limit is implemented with a forced off-time which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, VCC Under Voltage Lock-out, Max Duty Cycle Limiter, a Pre-charge Switch, a programmable Under Voltage Detector with a status flag output, and a gate driver output for a synchronous rectifier.

The LM5006 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient Buck bias regulator. This high voltage regulator contains an 80V N-Channel MOSFET Switch and a startup regulator. The device is easy to implement and is provided in an VSSOP-10 package. The regulator’s control scheme uses an on-time inversely proportional to VIN. This feature results in the operating frequency remaining relatively constant with line and load variations. The control scheme requires no loop compensation, resulting in fast transient response. An intelligent current limit is implemented with a forced off-time which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, VCC Under Voltage Lock-out, Max Duty Cycle Limiter, a Pre-charge Switch, a programmable Under Voltage Detector with a status flag output, and a gate driver output for a synchronous rectifier.

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Technical documentation

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Type Title Date
* Data sheet LM5006 80V, 600 mA Constant On-Time Buck Switching Regulator datasheet (Rev. B) 21 Mar 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 Sep 2013
User guide AN-2050 LM5006 Evaluation Board (Rev. A) 25 Apr 2013
Application note AN-2171 Designing Constant-On-Time Buck Regulators for Low Drop-Out Voltage (Rev. A) 23 Apr 2013
More literature High-Voltage PoL Power Solutions 30 Jan 2012

Design & development

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

Evaluation board

LM5006EVAL — Evaluation Board for the LM5006 Wide Vin Constant On-time Buck Switching Regulator

The LM5006EVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 6V to 75V. The circuit delivers load currents to 500 mA, with current (...)
User guide: PDF
Not available on TI.com
Simulation model

LM5006 PSPICE Transient Model

SNVM703.ZIP (34 KB) - PSpice Model
Simulation model

LM5006 Unencrypted PSpice Transient Model

SNVMAL5.ZIP (3 KB) - PSpice Model
Calculation tool

LM5006QUICK-CALC — LM5006 Quick Start Calculator

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 (...)
Reference designs

PMP9676 — Class 1 Non-isolated Buck Converter (5V/560mA) for PoE PD Applications Reference Design

This converter is used for Class 1 PoE PD applications where isolation is not required.  The TPS2378 PD controller plus LM5006 buck converter provide 5V/560mA with good efficieny in a small size.  The LM5006 can be configured with a diode rectifier for lowest cost or a synchronous FET (...)
Test report: PDF
Schematic: PDF
Package Pins Download
VSSOP (DGS) 10 View options

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