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Step-down (buck) regulators
Buck converters (integrated switch)

LM5010A

ACTIVE

6-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator

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Data sheet

A newer version of this product is available

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NEW LMR38010 ACTIVE SIMPLE SWITCHER® 80-V, 1.0-A, 2.2-MHz step-down converter with 40-µA IQ Smaller footprint, lower EMI, lower IQ, higher efficiency and spread spectrum.

LM5010A

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 6 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 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (Max) (%) 99
Vin (Min) (V) 6 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 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (Max) (%) 99
HTSSOP (PWP) 14 22 mm² 5 x 4.4 WSON (DPR) 10 16 mm² 4 x 4
  • LM5010A-Q1 Qualified for Automotive
    Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device Temperature Grade 0: –40°C to 150°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Wide 6-V to 75-V Input Voltage Range
  • Valley Current Limit at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 80-V N-Channel Buck Switch
  • Integrated High Voltage Bias Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency With Line
    and Load Variations
  • Adjustable Output Voltage
  • 2.5-V, ±2% Feedback Reference
  • Programmable Soft-Start
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation
  • LM5010A-Q1 Qualified for Automotive
    Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device Temperature Grade 0: –40°C to 150°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Wide 6-V to 75-V Input Voltage Range
  • Valley Current Limit at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 80-V N-Channel Buck Switch
  • Integrated High Voltage Bias Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency With Line
    and Load Variations
  • Adjustable Output Voltage
  • 2.5-V, ±2% Feedback Reference
  • Programmable Soft-Start
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation

The LM5010Ax step-down switching regulator is an enhanced version of the LM5010 with the input operating range extended to 6-V minimum. The LM5010Ax features all the functions needed to implement a low-cost, efficient, buck regulator capable of supplying in excess of 1-A load current. This high-voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The constant ON-time regulation scheme requires no loop compensation resulting in fast load transient response and simplified 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 LM5010Ax step-down switching regulator is an enhanced version of the LM5010 with the input operating range extended to 6-V minimum. The LM5010Ax features all the functions needed to implement a low-cost, efficient, buck regulator capable of supplying in excess of 1-A load current. This high-voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The constant ON-time regulation scheme requires no loop compensation resulting in fast load transient response and simplified 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 LM5010A, LM5010A-Q1 High-Voltage 1-A Step-Down Switching Regulator datasheet (Rev. F) PDF | HTML 24 May 2016
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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

Evaluation board

LM5010AEVAL — Wide Vin 1A Step Down Switching Regulator Evaluation Module

LM5010A High Voltage 1A Step Down Switching Regulator

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

LM5010AQUICK-CALC — LM5010A Quick Start Calculator

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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 (...)
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Reference designs

TIDA-00874 —

High Fidelity 175-W Class-D Audio Amplifier with Digital Inputs and Processing Reference Design

This design turns the extremely high performance analog input TPA3251 Class-D amplifier into a digital input system with audio processing using the highly versatile PCM5242 differential output DAC. Now the full performance of TPA3251 amplifier can be realized with a variety of digital input (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP8660 — Automotive Buck Conv for High-temp Ambient (105 deg) Providing 15V @ 160mA Reference Design

This design is a buck converter for automotive applications covering an input voltage range of 30..60V. It provides an output voltage of 15.0V @ 160mA and can operate up to 105 deg ambient temperature.
Test report: PDF
Reference designs

PMP8508 — 5.0V @ 0.35A Buck Converter

This design is a buck converter for automotive as well as for non-automotive applications. It delivers an output voltage of 5.0V @ 0.35A at an input voltage range of 7.5-24V. It can operate up to 60V for a short time.
Test report: PDF
Package Pins Download
HTSSOP (PWP) 14 View options
WSON (DPR) 10 View options

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