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LM25010

ACTIVE

6-42V Wide Vin, 1A, Constant On-Time Non-Synchronous Buck Regulator

Product details

Vin (min) (V) 6 Vin (max) (V) 42 Vout (min) (V) 2.5 Vout (max) (V) 37 Iout (max) (A) 1 Iq (typ) (mA) 0.645 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 Control mode Constant on-time (COT) Duty cycle (max) (%) 99 Type Converter
Vin (min) (V) 6 Vin (max) (V) 42 Vout (min) (V) 2.5 Vout (max) (V) 37 Iout (max) (A) 1 Iq (typ) (mA) 0.645 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 Control mode Constant on-time (COT) Duty cycle (max) (%) 99 Type Converter
HTSSOP (PWP) 14 32 mm² 5 x 6.4 WSON (DPR) 10 16 mm² 4 x 4
  • LM25010-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 42-V Input Voltage Range
  • Valley Current Limiting at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 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
  • LM25010-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 42-V Input Voltage Range
  • Valley Current Limiting at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 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

The LM25010 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 LM25010 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 LM25010, LM25010-Q1 42-V, 1-A Step-Down Switching Regulator datasheet (Rev. E) PDF | HTML 24 May 2016
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
White paper Buck regulator topologies for wide input/output voltage differentials (Rev. A) 15 Sep 2016
EVM User's guide AN-1431 LM25010 Evaluation Board (Rev. A) 24 Apr 2013

Design & development

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

Evaluation board

LM25010EVAL — Evaluation Boards for 42V, 1.0A Wide Vin Step-Down Switching Regulator

LM25010 42V, 1.0A Step-Down Switching Regulator

User guide: PDF
Not available on TI.com
Simulation model

LM5010A PSpice Transient Model

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

LM5010A Unencrypted PSpice Transient Model

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

LM25010QUICK-CALC — LM25010 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 (...)
Package Pins Download
HTSSOP (PWP) 14 View options
WSON (DPR) 10 View options

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