LM25010-Q1

ACTIVE

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

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Product details

Parameters

Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 2.5 Vout (Max) (V) 37 Iout (Max) (A) 1 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Features Enable, Over Current Protection, Soft Start Adjustable Control mode Constant on-time (COT) Duty cycle (Max) (%) 99 Type Converter Operating temperature range (C) -40 to 125, -40 to 150 Rating Automotive open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

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

Features

  • 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
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Description

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
* Datasheet LM25010, LM25010-Q1 42-V, 1-A Step-Down Switching Regulator datasheet (Rev. E) May 24, 2016
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
White papers Buck regulator topologies for wide input/output voltage differentials (Rev. A) Sep. 15, 2016
User guides AN-1431 LM25010 Evaluation Board (Rev. A) Apr. 24, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

LM25010 42V, 1.0A Step-Down Switching Regulator

Features
  • Wide 6V to 42V Input Voltage Range
  • Valley Current Limiting at 1.25A
  • Programmable Switching Frequency Up to 1MHz
  • 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
  • 2.5V (...)

Design tools & simulation

SIMULATION MODELS Download
SNVM493.ZIP (39 KB) - PSpice Model
SIMULATION MODELS Download
SNVM976.ZIP (4 KB) - PSpice Model
CALCULATION TOOLS Download
LM25010 Quick Start Calculator
LM25010QUICK-CALC

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 14 View options

Ordering & quality

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