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 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.

WEBENCH® LM3150     Min   Max   Range     VIN – V    6.00 – 42.00V     VOUT V    0.60 – 40.00V     IOUT A    ≤ 12.00A     Ambient Temp °C    ≤ 100°C   Footprint BOM Cost Efficiency What are WEBENCH® tools? Also Recommended LM22677▲ 5A SIMPLE SWITCHER Regulator LM3151▲ 12A SIMPLE SWITCHER Controller With 3.3V, 250kHz Output LM3152▲ 12A SIMPLE SWITCHER Controller With 3.3V, 500kHz Output LM3153▲ 12A SIMPLE SWITCHER Controller With 3.3V, 750kHz Output

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance *click for larger image Exposed Pad TSSOP-14 Package

Parameters / Values	LM3150	LM22677	LM3151	LM3152	LM3153
Output Current	12000 mA	5000 mA	12000 mA	12000 mA	12000 mA
Input Min Voltage	6 Volt	4.5 Volt	6 Volt	6 Volt	8 Volt
Input Max Voltage	42 Volt	42 Volt	42 Volt	33 Volt	18 Volt
Feedback Voltage	0.6 Volt	1.285 Volt	0.6 Volt	0.6 Volt	0.6 Volt
Feedback Tolerance	1.5 %		1.5 %	1.5 %	1.5 %
Frequency Max	1000 kHz	1000 kHz	250 kHz	500 kHz	750 kHz
Efficiency (peak)	95 %	92 %	95 %	95 %	95 %
Output Range	Adjustable down to 0.6V		3.3V	3.3V	3.3V
Adj Switch Frequency	Yes	Yes	No	No	No
Adjustable Output	Yes	Yes	No	No	No
Synchronous Rectification	Yes	No	Yes	Yes	Yes
On/Off Pin	Yes	Yes	Yes	Yes	Yes
PowerGood / Error Flag	No	No	No	No	No
SoftStart	Yes	No	Yes	Yes	Yes
Sync Pin	No	Yes	No	No	No
Inverting	No	Yes	No	No	No
Flyback	No	No	No	No	No
Lossless Current Sense	No		No	No	No
RegType	Switching Controller	Switching Regulator	Switching Controller	Switching Controller	Switching Controller
Temperature Min	-40 deg C	-40 deg C	-40 deg C	-40 deg C	-40 deg C
Temperature Max	125 deg C	125 deg C	125 deg C	125 deg C	125 deg C
Topology	Step-Down/Buck	Buck	Step-Down/Buck	Step-Down/Buck	Step-Down/Buck
Step-Down	Yes	Yes	Yes	Yes	Yes
Step-Up	No		No	No	No
Multiple Output Capability	No	No	No	No	No
Regulator Family	SIMPLE SWITCHER	SIMPLE SWITCHER	SIMPLE SWITCHER	SIMPLE SWITCHER	SIMPLE SWITCHER
PowerWise	Yes	No	Yes	Yes	Yes

Datasheets

Title		Size	Date	Other Language
	LM3150 SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down	493 Kbytes	4-Mar-11	日本語 中文

Application Notes

Title		Size	Date	Other Language
	AN-1900: Application Note 1900 LM3150 Evaluation Board	631 Kbytes	15-Apr-11
	AN-1481: Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs	574 Kbytes	27-Sep-06	日本語 中文
	AN-1229: Application Note 1229 ®SIMPLE SWITCHER PCB Layout Guidelines	229 Kbytes	1-May-04	日本語 中文

Other Technical Documents

Title		Type	Date
	Optimizing Ripple for a COT Buck Converter	External Article	2009-08-01
	SIMPLE SWITCHER® Design Guide	Design Guide	2011-04-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3150MH/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 272 CEAC Asia Pacific 3666 DIGI-KEY Worldwide 0 MOUSER Worldwide 158	$1.77 each at 1K+ pcs	rail of 94
LM3150MHE/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 110 AVNET-EM Worldwide 791 DIGI-KEY Worldwide 1669 FARNELL Europe and Asia 2352 MOUSER Worldwide 199 NEWARK Americas 555 TAYLOR Americas 110	$1.77 each at 1K+ pcs	reel of 250
LM3150MHX/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.77 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM3150.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM3150 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3150-250EVAL/NOPB	Evaluation Board for LM3150-250 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down	Full production Lead Free (RoHS)	Distributor Region Qty AVNET-EM Worldwide 8 DIGI-KEY Worldwide 0 MOUSER Worldwide 1	$29.00 each	1
Description: The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the output voltage adjusted to 3.3V, with a typical max load current of 10A. This board is configured for 250 kHz. The printed circuit board consists of 4 layers of FR4 material and the top and bottom layers using 2 once copper and the inner layers using 1 once copper. The board size is 2.9” X 2.9”. The evaluation board allows for a variety of configurations, and this multifunctional capability is used to also accept the fixed ouput versions of the LM3150 such as the LM3151-3.3, LM3152-3.3, and LM3153-3.3. Features: Switching Frequency: 250 kHz Input Voltage Range: 6V to 42V Output Voltage: 3.3V Output Current: 0A to 10A Contents: LM3150-250 Assembled Evaluation Board Application Note 1900 for the LM3150-250 Evaluation Board LM3150 Datasheet

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3150-500EVAL/NOPB	Evaluation Board for LM3150-500 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down	Full production Lead Free (RoHS)	Distributor Region Qty AVNET-EM Worldwide 10 DIGI-KEY Worldwide 0 MOUSER Worldwide 1	$29.00 each	1
Description: The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the output voltage adjusted to 3.3V, with a typical max load current of 10A. This board is configured for 500 kHz. The printed circuit board consists of 4 layers of FR4 material and the top and bottom layers using 2 once copper and the inner layers using 1 once copper. The board size is 2.9" X 2.9". The evaluation board allows for a variety of configurations, and this multifunctional capability is used to also accept the fixed output versions of the LM3150 such as the LM3151-3.3, LM3152-3.3, and LM3153-3.3. Features: Switching Frequency: 500 kHz Input Voltage Range: 6V to 24V Output Voltage: 3.3V Output Current: 0A to 10A Contents: LM3150-500 Assembled Evaluation Board Application Note 1900 for the LM3150-250 Evaluation Board LM3150 Datasheet

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3150-750EVAL	Evaluation Board for LM3150-750 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down	Full production	Distributor Region Qty AVNET-EM Worldwide 11 MOUSER Worldwide 2	$29.00 each	1
Description: The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the output voltage adjusted to 3.3V, with a typical max load current of 10A. This board is configured for 750 kHz. The printed circuit board consists of 4 layers of FR4 material and the top and bottom layers using 2 once copper and the inner layers using 1 once copper. The board size is 2.9” X 2.9”. The evaluation board allows for a variety of configurations, and this multifunctional capability is used to also accept the fixed ouput versions of the LM3150 such as the LM3151-3.3, LM3152-3.3, and LM3153-3.3. Features: Switching Frequency: 750 kHz Input Voltage Range: 8V to 17V Output Voltage: 3.3V Output Current: 0A to 10A Contents: LM3150-750 Assembled Evaluation Board Application Note 1900 for the LM3150-250 Evaluation Board LM3150 Datasheet

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3152-3.3DEMO	LM3152 - RD-164 - Demonstration Board	Full production	Distributor Region Qty AVNET-EM Worldwide 19 MOUSER Worldwide 2	$19.00 each	1
Description: The LM3152-3.3 demonstration board is a part of the PowerWise® family of SIMPLE SWITCHER® Controllers. It has been designed to balance solution size and performance. The Constant-On-Time (COT) Emulated Ripple Mode (ERM) Control allows for the use of low ESR output capacitors and therefore decreases the output voltage ripple while maintaining a fast transient response. There is no loop compensation required for the COT architecture , as there is in voltage-mode and current mode control architectures, which helps to facilitate the ease of design and fast transient response. The demoboard uses a 2-layer , 2 ounce copper PCB with all of the components mounted on the top side. The LM3152-3.3 IC has a fixed output voltage of 3.3V and will operate over the input voltage range of 6V to 24V at 10A load current. Features: Easy To Use with Webench and Offline Design Tools No Loop Compensation Required Low Solution Component Count Ultra-Fast Transient Response Low Output Voltage Ripple (32mVpp) 3.3V Fixed Output Voltage Optimized for 10A Average Load Current 95% Peak Efficiency Constant-On-Time with Emulated Ripple Mode Control 500 kHz Switching Frequency Contents: LM3152-3.3 Assembly Demo Board Application Note 1900 for the LM3152 Demonstation Board LM3152 Datasheet Other Resources: RD-164 - LM3152-3.3 Design files

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM3150MH/NOPB	53.783	TSSOP EXP PAD	14	1	260	Detail	Download	N/A	NSUZXYTT LM3150 MH
LM3150MHE/NOPB	53.783	TSSOP EXP PAD	14	1	260	Detail	Download	N/A	NSUZXYTT LM3150 MH
LM3150MHX/NOPB	53.783	TSSOP EXP PAD	14	1	260	Detail	Download	N/A	NSUZXYTT LM3150 MH

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM3150.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM3150 is located at RoHS Status.

Design Tools

Title	Size	Date
Downloadable LM315x Quick Start Simple Switcher Controller Component Calculator
Article - Emulated Ripple Technique Advances Hysteretic Switchmode Supplies

Reference Design

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

CAD Symbols and Models Download LM3150 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM3150MH	ABCD5	0	5364	0	0	1626984	3	461661152
LM3150MHE	ABCD5	0	5364	0	0	1626984	3	461661152
LM3150MHX	ABCD5	0	5364	0	0	1626984	3	461661152

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.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM3150.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM3150 is located at RoHS Status.

WEBENCH® Power Designer Tool & New LM315x SIMPLE SWITCHER® Controller Technical Overview Click image to play video in new window LM315x LM2267x Simple Switcher Controllers Regulators & WEBENCH Power Designer Loading video...

WEBENCH® Power Designer Tool & New LM315x SIMPLE SWITCHER® Controller Technical Overview Date: 2009-03-17 Length: 00:41:00 LM315x LM2267x Simple Switcher Controllers Regulators & WEBENCH Power Designer Date: 2008-10-31 Length: 0:6:33