Product details

Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 0.6 Vout (Max) (V) 40 Iout (Max) (A) 12 Iq (Typ) (uA) 3500 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog
Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 0.6 Vout (Max) (V) 40 Iout (Max) (A) 12 Iq (Typ) (uA) 3500 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • PowerWise™ Step-Down Controller
  • 6-V to 42-V Wide Input Voltage Range
  • Adjustable Output Voltage Down to 0.6 V
  • Programmable Switching Frequency up to 1 MHz
  • No Loop Compensation Required
  • Fully WEBENCH® Enabled
  • Low External Component Count
  • Constant On-Time (COT) Control
  • Ultra-Fast Transient Response
  • Stable With Low ESR Capacitors
  • Output Voltage PreBias Startup
  • Valley Current Limit
  • Programmable Soft-Start
  • Create a Custom Design Using the LM3150 with the WEBENCH Power Designer
  • PowerWise™ Step-Down Controller
  • 6-V to 42-V Wide Input Voltage Range
  • Adjustable Output Voltage Down to 0.6 V
  • Programmable Switching Frequency up to 1 MHz
  • No Loop Compensation Required
  • Fully WEBENCH® Enabled
  • Low External Component Count
  • Constant On-Time (COT) Control
  • Ultra-Fast Transient Response
  • Stable With Low ESR Capacitors
  • Output Voltage PreBias Startup
  • Valley Current Limit
  • Programmable Soft-Start
  • Create a Custom Design Using the LM3150 with the WEBENCH Power Designer

The LM3150 SIMPLE SWITCHER® controller is an easy-to-use and simplified step-down power controller capable of providing up to 12 A of output current in a typical application. Operating with an input voltage range of 6 V to 42 V, the LM3150 controller features an adjustable output voltage down to 0.6 V. 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 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, undervoltage lockout, overvoltage protection, short-circuit protection, current limit, and output voltage prebias start-up allow for a reliable and robust solution.

The LM3150 concept provides for an easy-to-use complete design using a minimum number of external components and TI’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.

The LM3150 SIMPLE SWITCHER® controller is an easy-to-use and simplified step-down power controller capable of providing up to 12 A of output current in a typical application. Operating with an input voltage range of 6 V to 42 V, the LM3150 controller features an adjustable output voltage down to 0.6 V. 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 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, undervoltage lockout, overvoltage protection, short-circuit protection, current limit, and output voltage prebias start-up allow for a reliable and robust solution.

The LM3150 concept provides for an easy-to-use complete design using a minimum number of external components and TI’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.

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Technical documentation

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Type Title Date
* Data sheet LM3150 Wide-VIN Synchronous Buck Controller datasheet (Rev. G) 23 Apr 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Control-Mode Quick Reference Guide (Rev. A) 14 Sep 2017
Technical article Stop "droning" on about power supply issues: find a solution 13 Nov 2015
Technical article New - Edit a schematic created by WEBENCH 11 Mar 2014
User guide AN-1900 LM3150 Evaluation Boards (Rev. D) 01 May 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 Apr 2013
Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 23 Apr 2013
Design guide SIMPLE SWITCHER® Design Guide 11 Apr 2011

Design & development

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

Evaluation board

LM3150-250EVAL — Evaluation Board for LM3150-250 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down

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 (...)

In stock
Limit: 5
Evaluation board

LM3150-500EVAL — Evaluation Board for LM3150-500 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down

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 (...)

In stock
Limit: 1
Evaluation board

LM3150-750EVAL — Evaluation Board for LM3150-750 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down

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 (...)

In stock
Limit: 5
Evaluation board

LM3152-3.3DEMO — LM3152 - RD-164 - Demonstration Board

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 (...)

In stock
Limit: 5
Simulation model

LM3150 PSpice Transient Model (Rev. B)

SNVM059B.ZIP (117 KB) - PSpice Model
Simulation model

LM3150 TINA-TI Transient Spice Model (Rev. A)

SNVM425A.ZIP (24 KB) - TINA-TI Spice Model
Simulation model

LM3150 TINA-TI Startup Reference Design (Rev. A)

SNVM426A.TSC (143 KB) - TINA-TI Reference Design
Simulation model

LM3150 TINA-TI Steady State Reference Design

SNVM693.TSC (142 KB) - TINA-TI Reference Design
Simulation model

LM3150 Unencrypted PSpice Transient Model

SNVMB62.ZIP (4 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Calculation tool

LM315XQUICK-CALC — LM315x Quick Start Simple Switcher Controller Component Calculator

Reference designs

PMP30502 — 18-VDC - 30-VDC input multiple output flybuck reference design

This isolated flybuck reference design uses the LM3150 synchronous buck controller to generate one non-isolated output (3.3 V at 5 A) and two isolated outputs (5 V at 100 mA, 5 V at 100 mA) from a DC input (18 VDC - 30 VDC). The design can provide 17.5-W output power. Two additonal linear regulator (...)
Reference designs

PMP10650 — High Density Efficient Solution for Main Aux as well as Back up Aux Power in Drones

PMP10650 is a high power density 40W Buck Converter design optimized for Wide Vin Drone Design using the LM3150 controller IC (Used for Drone’s Backup Power) and LM53603. The design accepts an input voltage of 7Vin to 36Vin and provides the outputs of 5V@5A for Drone’s Backup power and (...)
Reference designs

PMP10668 — 13.2V to 36V, Wide Input, 10V/4A Output Synchronous Buck Reference Design with LM3150

Reference designs

PMP9402 — Compact Size Dual 2.5A USB Car Charger Reference Design

PMP9402 is a dual USB car charger. This design utilizes the LM3150, TPS2561 Dual Channel Power Switch and a TPS2513 USB Dedicated Charging Port Controller. This design operates from 6 to 40V in. The output is set to 5V; both channels have a 2.5A current limit. This design has a switching frequency (...)
Reference designs

PMP9367 — 17.5W Dual USB Car Charger Reference Design

PMP9367 is a dual USB car charger reference design intended for use in aftermarket automotive application. This design utilizes the LM3150, TPS2561 Dual Channel Power Switch and a TPS2513 USB Dedicated Charging Port Controller. This design operates from 6 to 40V in. The outputs is set to 5V, channel (...)
Reference designs

PMP10581 — Power Solution for Terasic DE2-115 (Cyclone IV)

The PMP10581 reference design provides all the power supply rails necessary to power Altera’s Cyclone® IV E FPGA. DE2-115 was developed by Terasic and this board is available for purchase through Terasic’s website.
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  • Ongoing reliability monitoring

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