LT8330 - Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch

Features

  • 3V to 40V Input Voltage Range
  • Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 6μA
  • 1A, 60V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Fixed 2MHz Switching Frequency
  • Accurate 1.6V EN/UVLO Pin Threshold
  • Internal Compensation and Soft-Start
  • Low Profile (1mm) ThinSOT™ Package
  • Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package

Typical Application

LT8330 Typical Application
LT8330 Typical Application

Description

The LT®8330 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6μA of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very low output currents while keeping the output ripple below 15mV in a typical application. The internally compensated current mode architecture results in stable operation over a wide range of input and output voltages. Integrated soft-start and frequency foldback functions are included to control inductor current during start-up. The 2MHz operation combined with small package options, enables low cost, area efficient solutions.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LT8330EDDB#PBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8330EDDB#TRMPBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8330EDDB#TRPBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8330ES6#PBF SOT-23 S6 E 05-08-1636 Yes
LT8330ES6#TRMPBF SOT-23 S6 E 05-08-1636 Yes
LT8330ES6#TRPBF SOT-23 S6 E 05-08-1636 Yes
LT8330HDDB#PBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LT8330HDDB#TRMPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LT8330HDDB#TRPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LT8330HS6#PBF SOT-23 S6 H 05-08-1636 Yes
LT8330HS6#TRMPBF SOT-23 S6 H 05-08-1636 Yes
LT8330HS6#TRPBF SOT-23 S6 H 05-08-1636 Yes
LT8330IDDB#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LT8330IDDB#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LT8330IDDB#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LT8330IS6#PBF SOT-23 S6 I 05-08-1636 Yes
LT8330IS6#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT8330IS6#TRPBF SOT-23 S6 I 05-08-1636 Yes


LT8330 Package Drawing
LT8330 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
LT8330EDDB#PBF 3x2 DFN-8 E $3.57 Yes
LT8330EDDB#TRMPBF 3x2 DFN-8 E $3.57 $2.55 Yes
LT8330EDDB#TRPBF 3x2 DFN-8 E $3.57 $2.50 Yes
LT8330ES6#PBF SOT-23 E $3.57 Yes
LT8330ES6#TRMPBF SOT-23 E $3.57 $2.55 Yes
LT8330ES6#TRPBF SOT-23 E $3.57 $2.50 Yes
LT8330HDDB#PBF 3x2 DFN-8 H $4.29 Yes
LT8330HDDB#TRMPBF 3x2 DFN-8 H $4.29 $3.05 Yes
LT8330HDDB#TRPBF 3x2 DFN-8 H $4.29 $3.00 Yes
LT8330HS6#PBF SOT-23 H $4.29 Yes
LT8330HS6#TRMPBF SOT-23 H $4.29 $3.05 Yes
LT8330HS6#TRPBF SOT-23 H $4.29 $3.00 Yes
LT8330IDDB#PBF 3x2 DFN-8 I $3.93 Yes
LT8330IDDB#TRMPBF 3x2 DFN-8 I $3.93 $2.80 Yes
LT8330IDDB#TRPBF 3x2 DFN-8 I $3.93 $2.75 Yes
LT8330IS6#PBF SOT-23 I $3.93 Yes
LT8330IS6#TRMPBF SOT-23 I $3.93 $2.80 Yes
LT8330IS6#TRPBF SOT-23 I $3.93 $2.75 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
DC2018A LT8330 Demo Board | Dual circuits. 1) 10V to 36V input to 48V at 135mA & 2) 4V to 36V input to -12V at 270mA $150.00
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Click here to view our complete list of demo boards

Applications

  • Industrial and Automotive
  • Telecom
  • Medical Diagnostic Equipment
  • Portable Electronics

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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 IV:
LT8330

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

To open the project file for this circuit:

  • Step 1: If you have not installed LTpowerCAD on this computer, download and install LTpowerCAD
  • Step 2: Once LTpowerCAD is installed, click on the link(s) below to open the project file
  • Step 3: If LTpowerCAD does not automatically open after clicking the link above, you can open the project file by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTpowerCAD and open the project file by selecting 'Open Project' from the 'File' menu

Design tools for the following parts are available in LTpowerCAD:
LT8330

Technical Support