LTM8003 - 40VIN, 3.5A Step-Down Silent Switcher μModule Regulator

Features

  • Complete Step-Down Switch Mode Power Supply
  • Low Noise Silent Switcher® Architecture
  • Wide Input Voltage Range: 3.4V to 40V
  • Wide Output Voltage Range: 0.97V to 18V
  • Wide Temperature Range: –40°C to 150°C (H-Grade)
  • 3.5A Continuous Output Current, 6A peak
  • FMEA Compliant Pinout (LTM8003-3.3) Output Stays at or Below Regulation Voltage During Adjacent Pin Short or if a Pin Is Left Floating
  • Selectable Switching Frequency: 200kHz to 3MHz
  • External Synchronization
  • Low Quiescent Current: 25μA (5VOUT)
  • Tiny, Low Profile 6.25mm × 9mm × 3.32mm RoHS Compliant BGA Package

Typical Application

LTM8003 Typical Application
LTM8003 Typical Application

Description

The LTM®8003 is a 40VIN, 6A peak, 3.5A continuous stepdown Silent Switcher μModule® (power module) regulator. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3.4V to 40V, the LTM8003 supports an output voltage range of 0.97V to 18V and a switching frequency range of 200kHz to 3MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8003 is packaged in a thermally enhanced, compact over-molded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8003 is RoHS compliant.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTM8003HY 9mm x 6.25mm x 3.32mm BGA BGA H 05-08-1999 No
LTM8003HY-3.3#PBF 9mm x 6.25mm x 3.32mm BGA BGA H 05-08-1999 Yes
LTM8003HY#PBF 9mm x 6.25mm x 3.32mm BGA BGA H 05-08-1999 Yes
LTM8003IY 9mm x 6.25mm x 3.32mm BGA BGA I 05-08-1999 No
LTM8003IY-3.3#PBF 9mm x 6.25mm x 3.32mm BGA BGA I 05-08-1999 Yes
LTM8003IY#PBF 9mm x 6.25mm x 3.32mm BGA BGA I 05-08-1999 Yes


LTM8003 Package Drawing
LTM8003 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTM8003HY 9mm x 6.25mm x 3.32mm BGA H $23.06 $16.14 No
LTM8003HY-3.3#PBF 9mm x 6.25mm x 3.32mm BGA H $17.57 $12.30 Yes
LTM8003HY#PBF 9mm x 6.25mm x 3.32mm BGA H $17.57 $12.30 Yes
LTM8003IY 9mm x 6.25mm x 3.32mm BGA I $21.63 $15.14 No
LTM8003IY-3.3#PBF 9mm x 6.25mm x 3.32mm BGA I $16.14 $11.30 Yes
LTM8003IY#PBF 9mm x 6.25mm x 3.32mm BGA I $16.14 $11.30 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2416A LTM8003 Demo Board | Low EMI Buck μModule Regulator, 6V ≤ VIN ≤ 40V, Vout = 5V @ 3.5A $65.00
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Click here to view our complete list of demo boards

Applications

  • Automotive Battery Regulation
  • Power for Portable Products
  • Distributed Supply Regulation
  • Industrial Supplies
  • Wall Transformer Regulation

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LTM8003
LTM8003-3.3

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:
LTM8003

Technical Support