LM5010

ACTIVE

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

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Product details

Parameters

Vin (Min) (V) 8 Vin (Max) (V) 75 Vout (Min) (V) 2.5 Vout (Max) (V) 70 Iout (Max) (A) 1 Iq (Typ) (uA) 650 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HTSSOP (PWP) 14 32 mm² 5 x 6.4 WSON (DPR) 10 16 mm² 4 x 4 open-in-new Find other Buck converters (integrated switch)

Features

  • 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
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Description

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
* Datasheet LM5010 High-Voltage 1-A Step-Down Switching Regulator datasheet (Rev. G) Apr. 27, 2016
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide AN-1352 LM5010 Evaluation Board (Rev. A) Apr. 30, 2013
User guide AN-1423 LM5010A Evaluation Board (Rev. A) Apr. 30, 2013
Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) Apr. 23, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

LM5010 High Voltage 1A Step Down Switching Regulator

Features
  • 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 Startup Regulator
  • No Loop Compesation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant With Load and Line Variations
  • Maximum Duty Cycle (...)
EVALUATION BOARD Download
document-generic User guide
149
Description
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 design (...)
Features
  • Self-contained protection system (short circuit, clip and thermal)
  • Standard 2VRMS differential input  or single-ended line input
  • BTL, PBTL and SE output configurations support
  • Double-sided, plated-through, 2oz. cu 4 layer PCB layout
  • Supports Audio Plug-In Boards through its AIB connector
  • Supports (...)
EVALUATION BOARD Download
document-generic User guide
149
Description
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 design (...)
Features
  • Stereo Ultra-HD evaluation module
  • Self-contained protection system (short circuit, clip and thermal)
  • Standard 2VRMS differential input  or single ended line input
  • BTL, PBTL and SE output configurations support
  • Double-sided, plated-through, 2oz. cu 2 layer PCB layout

Design tools & simulation

SIMULATION MODEL Download
SNVM493.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SNVM976.ZIP (4 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download

Reference designs

REFERENCE DESIGNS Download
Class 2 Non-isolated PoE Buck Converter (5V/1A) Reference Design
PMP10812 — 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.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 14 View options
WSON (DPR) 10 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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