LM25010 - 42V, 1.0A Step-Down Switching Regulator

	LM25010 - 42V, 1.0A Step-Down Switching Regulator

Datasheet	Packaging	Samples & Pricing	Eval. Boards	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

Parametric Table expand

Parametric Table collapse

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

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 Undefined Volt

Regulator Family Undefined

AEC Q-100 Automotive Grade Undefined

Automotive Selection Guide Yes

Synchronous Rectification No

View Using Catalog

Typical Performance

*click for larger image

WEBENCH Live Simulation!

LM25010 WEBENCH® Custom Design/Analyze/Build It/Test It
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
What are WEBENCH® tools?

Also Recommended

LM25005	2.5A 42V Switching Regulator
LM25007	0.5A 42V Switching Regulator
LM5010	Higher Voltage Range (80V) Version

Additional Resources

Application Notes (see below)

Block Diagram

click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LM25010/LM25010Q 42V, 1.0A Step-Down Switching Regulator	405 Kbytes	2-Dec-08	View Online Download
LM25010/LM25010Q 42V, 1.0A Step-Down Switching Regulator (Japanese)	507 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LM25010EVAL

Evaluation Boards for 42V, 1.0A Step-Down Switching Regulator

Full production

N/A

$54.00

8 weeks

N/A

LM25010Q0MH

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

CALL

rail
of
N/A

NSUZXYTT
L25010
Q0MH

6 weeks

N/A

LM25010Q0MHX

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

CALL

reel
of
N/A

NSUZXYTT
L25010
Q0MH

12 weeks

N/A

LM25010Q1MH

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

CALL

rail
of
N/A

NSUZXYTT
L25010
Q1MH

12 weeks

N/A

LM25010Q1MHX

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

CALL

reel
of
N/A

NSUZXYTT
L25010
Q1MH

8 weeks

N/A

LM25010MH

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.50

rail
of
94

NSUZXYTT
L25010
MH

6 weeks

3000

LM25010MHX

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.50

reel
of
2500

NSUZXYTT
L25010
MH

6 weeks

5000

LM25010SD

LLP

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.50

reel
of
1000

NS
UZXYTT
25010SD

6 weeks

7500

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.

Application Notes

Title	Size in Kbytes	Date
AN-1431: Application Note 1431 LM25010 Evaluation Board	632 Kbytes	19-Dec-05	Download

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More Application Notes

Title	Size in Kbytes	Date
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

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Jan-2009]