LM3150 - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Reference Designs Knowledge Base

Features
PowerWise ® step-down controller
6V to 42V Wide input voltage range
Adjustable output voltage down to 0.6V
Programmable switching frequency up to 1 MHz
No loop compensation required
Fully WEBENCH ® enabled
Low external component count
Constant On-Time control
Ultra-fast transient response
Stable with low ESR capacitors
Output voltage pre-bias startup
Valley current limit
Programmable soft-start

General Description


The LM3150 SIMPLE SWITCHER ® Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. More...


  Typical Application
click for larger image


ParametersValues
Output Current 12000 mA
Input Min Voltage 6 Volt
Input Max Voltage 42 Volt
Feedback Voltage 0.6 Volt
Feedback Tolerance 1.5 %
Frequency Max 1000 kHz
Efficiency (peak) 95 %
Output Range Adjustable down to 0.6V
Adj Switch Frequency Yes
Adjustable Output Yes
Synchronous Rectification Yes
On/Off Pin Yes
Error Flag No
SoftStart Yes
Sync Pin No
Inverting No
Flyback No
Lossless Current Sense No
RegType Switching Controller
Temperature Min -40 deg C
Temperature Max 125 deg C
Topology Step-Down/Buck
Step-Down Yes
Step-Up No
Multiple Output Capability No
Regulator Family SIMPLE SWITCHER
PowerWise Yes


Typical Performance


*click for larger image


  WEBENCH Live Simulation!
WEBENCH Power Designer My Designs

LM3150

 
6.00 <=
V in Lower
 V
 
<=
V in Upper
 V
 
<= 42.00
V out 0.60 <=  V <= 40.00
I out    A <= 12.00
Ambient Temperature  °C <= 100


What are WEBENCH® tools?

Also Recommended
LM226775A SIMPLE SWITCHER Regulator
LM315112A SIMPLE SWITCHER Controller With 3.3V, 250kHz Output
LM315212A SIMPLE SWITCHER Controller With 3.3V, 500kHz Output
LM315312A SIMPLE SWITCHER Controller With 3.3V, 750kHz Output
Additional Resources
Online Seminars Design Tools


Block Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM3150 SIMPLE SWITCHER ® CONTROLLER, 42V Synchronous Step-Down 469
Kbytes
17-Oct-08 Download
LM3150 SIMPLE SWITCHER ® CONTROLLER, 42V Synchronous Step-Down (Japanese)
716 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
LM3152-3.3DEMOLM3152 - RD-164 - Demonstration BoardFull productionN/A
 
Buy Now
1+$19.001-
N/AN/A
LM3150MHTSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
 
Buy Now
1K+$2.30rail
of
94
NSUZXYTT
LM3150
MH
8 weeksN/A
LM3150MHETSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now
1K+$2.30reel
of
250
NSUZXYTT
LM3150
MH
6 weeksN/A
LM3150MHXTSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
 
Buy Now
1K+$2.30reel
of
2500
NSUZXYTT
LM3150
MH
8 weeksN/A
LM3150-250EVALEvaluation Board for LM3150-250 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-DownFull productionN/A
 
Buy Now
1+$29.001-
8 weeksN/A
LM3150-500EVALEvaluation Board for LM3150-500 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-DownFull productionN/A
 
Buy Now
1+$29.001-
8 weeksN/A
LM3150-750EVALEvaluation Board for LM3150-750 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-DownFull productionN/A
 
Buy Now
1+$29.001-
8 weeksN/A

General Description


The LM3150 SIMPLE SWITCHER ® Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. Operating with an input voltage range of 6V-42V, the LM3150 features an adjustable output voltage down to 0.6V. The switching frequency is adjustable up to 1 MHz and the synchronous architecture provides for highly efficient designs. The LM3150 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated Ripple Mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity.

Fault protection features such as thermal shutdown, under-voltage lockout, over-voltage protection, short-circuit protection, current limit, and output voltage pre-bias startup allow for a reliable and robust solution.

The LM3150 SIMPLE SWITCHER ® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH ® online design tool. WEBENCH ® provides design support for every step of the design process and includes features such as external component calculation with a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM3150MHABCD5053640016269843461661152
LM3150MHEABCD5053640016269843461661152
LM3150MHXABCD5053640016269843461661152

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    
Downloadable LM315x Quick Start Simple Switcher Controller Component Calculator 1861 Kbytes 20-Oct-2008 View    
Article - Emulated Ripple Technique Advances Hysteretic Switchmode Supplies     View    

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Reference Designs
RD-164 - LM3152-3.3 Design with 3.3V @ 10A, Low Output Ripple, Fast Transient Response Over a 6V to 24V Input

Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1900: Application Note 1900 LM3150 Evaluation Boards 626
Kbytes
14-Oct-08 Download
AN-1229: Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines 229
Kbytes
1-May-04 Download
AN-1229 (Japanese): Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines
304 Kbytes   Download
AN-1229 (Chinese): Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines
668 Kbytes  
AN-1481: Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs 574
Kbytes
27-Sep-06 Download
AN-1481 (Japanese): Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs
220 Kbytes   Download
AN-1481 (Chinese): Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs
421 Kbytes  

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

[Information as of 7-Nov-2009]