LT8335 - Low IQ Boost/SEPIC/ Inverting Converter with 2A, 28V Switch

Features

  • 3V to 25V Input Voltage Range
  • Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 6μA
  • 2A, 28V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Fixed 2MHz Switching Frequency
  • Programmable Undervoltage Lockout (UVLO)
  • Internal Compensation and Soft-Start
  • Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package

Typical Application

LT8335 Typical Application
LT8335 Typical Application

Description

The LT®8335 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 the small 8-lead DFN package, enables low cost, area efficient solutions.

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
LT8335EDDB#PBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8335EDDB#TRMPBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8335EDDB#TRPBF 3x2 DFN-8 DDB E 05-08-1702 Yes
LT8335IDDB#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LT8335IDDB#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LT8335IDDB#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes


LT8335 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
LT8335EDDB#PBF 3x2 DFN-8 E $3.57 Yes
LT8335EDDB#TRMPBF 3x2 DFN-8 E $3.57 $2.55 Yes
LT8335EDDB#TRPBF 3x2 DFN-8 E $3.57 $2.50 Yes
LT8335IDDB#PBF 3x2 DFN-8 I $3.93 Yes
LT8335IDDB#TRMPBF 3x2 DFN-8 I $3.93 $2.80 Yes
LT8335IDDB#TRPBF 3x2 DFN-8 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
DC2449A-A LT8335 Demo Board | Micropower Boost, 3V ≤ VIN ≤ 10V, Vout = 12V @ 275mA, 2MHz fSWITCH Contact Factory
DC2449A-B LT8335 Demo Board | Micropower Inverter, 4.5V ≤ VIN ≤ 13V, Vout = -12V @ 350mA, 2MHz fSWITCH Contact Factory
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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:

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

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:
LT8335

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