LM25010 - 42V, 1.0A Step-Down Switching Regulator
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Application Notes Knowledge Base

Features
•Wide 6V to 42V Input Voltage Range
•Valley Current Limiting At 1.25A
•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
•2.5V, ±2% Feedback Reference
•Programmable Soft-Start
•Thermal shutdown
•LM25010Q is AEC-Q100 Grade 1 & 0 qualified

General Description

The LM25010 features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. More...


  Typical Application
click for larger image


ParametersValues
Output Current 1000 mA
Input Min Voltage 6 Volt
Input Max Voltage 42 Volt
Output Min 2.5 Volt
Output Max 37 Volt
Frequency Min 50 kHz
Frequency Max 1000 kHz
Efficiency (peak) 95 %
On/Off Pin Yes
Error Flag No
SoftStart Yes
Sync Pin No
Inverting Yes
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Adjustable Output Yes
Adj Switch Frequency Yes
PWM Mode Constant on-time
Topology Buck
Special Features Ultra-fast transient response
Step-Down Yes
Multiple Output Capability No
Output Power Undefined Watt
Output Voltage Undefined Volt
Output Range 2.5V to 37V
Switching Frequency 1000 kHz
Feedback Voltage 2.5 Volt
Regulator Family Undefined
AEC Q-100 Automotive Grade 1
Automotive Yes
Synchronous Rectification No


Typical Performance

*click for larger image


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LM25010
 
6.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 42.00
V out 2.50 <=  V <= 42.00
I out    A <= 1.00
Ambient Temperature  °C <= 100


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Also Recommended
LM25005▲2.5A 42V Switching Regulator
LM25007▲0.5A 42V Switching Regulator
LM5010▲Higher Voltage Range (80V) Version
Additional Resources
Design Tools

Application Notes


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM25010/LM25010Q 42V, 1.0A Step-Down Switching Regulator 405
Kbytes		 2-Dec-08 Download
LM25010/LM25010Q 42V, 1.0A Step-Down Switching Regulator (Japanese)
 507 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM25010EVALEvaluation Boards for 42V, 1.0A Step-Down Switching RegulatorFull productionN/A
 
Buy Now 		1+$54.001-
8 weeksN/A
LM25010Q0MHTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$2.25rail
of
94		NSUZXYTT
L25010
Q0MH
8 weeksN/A
LM25010Q1MHTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.85rail
of
94		NSUZXYTT
L25010
Q1MH
6 weeksN/A
LM25010MHTSSOP EXP PAD14NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.40rail
of
94		NSUZXYTT
L25010
MH
8 weeks500
LM25010Q0MHXTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$2.25reel
of
2500		NSUZXYTT
L25010
Q0MH
8 weeksN/A
LM25010Q1MHXTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.85reel
of
2500		NSUZXYTT
L25010
Q1MH
8 weeksN/A
LM25010MHXTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.40reel
of
2500		NSUZXYTT
L25010
MH
6 weeks3000
LM25010SDLLP10NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.40reel
of
1000		NS
UZXYTT
25010SD
6 weeks10000

General Description

The LM25010 features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. This high voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP 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 1.25A. Additional features include: VCC under-voltage lock-out, thermal shutdown, gate drive under-voltage lock-out, and maximum duty cycle limiter.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM25010MHABCD150XV1038680025950002736338335
LM25010MHXABCD150XV1038680025950002736338335
LM25010Q0MHABCD150XV1038680025950002736338335
LM25010Q0MHXABCD150XV1038680025950002736338335
LM25010Q1MHABCD150XV1038680025950002736338335
LM25010Q1MHXABCD150XV1038680025950002736338335
LM25010SDABCD150XV1038680025950002736338335

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
LM25010 Quick Start Calculator 362 Kbytes 21-Jul-2009 View    

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1431: Application Note 1431 LM25010 Evaluation Board 632
Kbytes		 19-Dec-05 Download

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More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1311: Application Note 1311 MPL PHY Layer Overview 151
Kbytes		 19-Jan-04 Download
AN-1311 (Chinese): Application Note 1311 MPL PHY Layer Overview
 369 Kbytes  
AN-1965: Application Note 1965 LM25011 Evaluation Board 378
Kbytes		 30-May-09 Download

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[Information as of 8-Nov-2009]