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

LM5010

ACTIVE

8-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator

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TPSM365R6 ACTIVE 3-V to 65-V input, 1-V to 13-V output, 0.6-A synchronous buck converter power module Smaller design with an integrated-inductor power module.

LM5010

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 8 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 70 Iq (typ) (µA) 650 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 8 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 70 Iq (typ) (µA) 650 Duty cycle (max) (%) 99
HTSSOP (PWP) 14 32 mm² 5 x 6.4 WSON (DPR) 10 16 mm² 4 x 4
  • Input Voltage Range: 8 V to 75 V
  • Valley Current Limit At 1.25 A
  • Switching Frequency Can Exceed 1 MHz
  • Integrated N-Channel Buck Switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant With
    Load and Line Variations
  • Maximum Duty Cycle Limited During Start-Up
  • Adjustable Output Voltage
  • Precision 2.5-V Feedback Reference
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation
  • Input Voltage Range: 8 V to 75 V
  • Valley Current Limit At 1.25 A
  • Switching Frequency Can Exceed 1 MHz
  • Integrated N-Channel Buck Switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant With
    Load and Line Variations
  • Maximum Duty Cycle Limited During Start-Up
  • Adjustable Output Voltage
  • Precision 2.5-V Feedback Reference
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation

The LM5010 step-down switching regulator features all the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying in excess of 1-A load current. This high-voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The hysteretic regulation scheme requires no loop compensation, resulting in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the ON-time. The valley current limit detection is set at 1.25 A. Additional features include: VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.

The LM5010 step-down switching regulator features all the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying in excess of 1-A load current. This high-voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The hysteretic regulation scheme requires no loop compensation, resulting in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the ON-time. The valley current limit detection is set at 1.25 A. Additional features include: VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.
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Technical documentation

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Type Title Date
* Data sheet LM5010 High-Voltage 1-A Step-Down Switching Regulator datasheet (Rev. G) PDF | HTML 27 Apr 2016
EVM User's guide AN-1352 LM5010 Evaluation Board (Rev. A) 30 Apr 2013
EVM User's guide AN-1423 LM5010A Evaluation Board (Rev. A) 30 Apr 2013
Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 23 Apr 2013

Design & development

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

Evaluation board

LM5010-EVAL — Wide Vin 1A Step Down Switching Regulator Evaluation Module

LM5010 High Voltage 1A Step Down Switching Regulator

User guide: PDF
Not available on TI.com
Evaluation board

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User guide: PDF
Not available on TI.com
Evaluation board

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The TPA3244EVM Ultra-HD evaluation module demonstrates the TPA3244DDW integrated circuit from Texas Instruments. The TPA3244DDW is a high-performance class-D amplifier that enables true premium sound quality with high efficiency class-D technology. It features an advanced integrated feedback (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPA3245EVM — TPA3245 115W Stereo / 230W Mono Ultra-HD Analog-In Audio Class-D Module

The TPA3245EVM Ultra-HD evaluation module demonstrates the TPA3245DDV integrated circuit from Texas Instruments. The TPA3245DDV is a high-performance class-D amplifier that enables true premium sound quality with high efficiency class-D technology. It features an advanced integrated feedback (...)
User guide: PDF
Not available on TI.com
Simulation model

LM5010A PSpice Transient Model

SNVM493.ZIP (39 KB) - PSpice Model
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Simulation model

LM5010A Unencrypted PSpice Transient Model

SNVM976.ZIP (4 KB) - PSpice Model
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Calculation tool

LM5010QUICK-CALC — LM5010 Quick Start Calculator

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Reference designs

PMP10812 — Class 2 Non-isolated PoE Buck Converter (5V/1A) Reference Design

The PMP10812 reference design is ideal for Class 2 PoE PD applications that do not require isolation.  The TPS2378 PD controller provides the interface to the PSE.  The LM5010 buck converter has an integrated high side FET and external low side diode rectifier for low cost.
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 14 Ultra Librarian
WSON (DPR) 10 Ultra Librarian
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