LTC3113 - 3A Low Noise Buck-Boost DC/DC Converter


  • Regulated Output with Input Voltage Above, Below or Equal to the Output Voltage
  • 1.8V to 5.5V Input and Output Voltage Range
  • 3A Continuous Output Current VIN > 3.0V, VOUT = 3.8V
  • 1.5A Continuous Output Current for VIN ≥ 1.8V, VOUT = 3.3V
  • Single Inductor
  • Low Noise Buck-Boost Architecture
  • Up to 96% Efficiency
  • Programmable Frequency from 300kHz to 2MHz
  • Selectable Burst Mode® Operation
  • Output Disconnect in Shutdown
  • Shutdown Current: <1μA
  • Internal Soft-Start
  • Small, Thermally Enhanced 16-Lead
    (4mm × 5mm × 0.75mm) DFN Package
    and 20-Lead TSSOP Package

Typical Application

LTC3113 Typical Application
LTC3113 Typical Application


The LTC3113 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides low noise operation, making it well suited for RF and precision measurement applications.

The LTC3113 can deliver up to 3A of continuous output current to satisfy the most demanding applications. Higher output current is possible in stepdown (buck) mode. Integrated low RDS(ON) power MOSFETs and a programmable switching frequency up to 2MHz result in a compact solution footprint. Selectable Burst Mode operation improves efficiency at light loads.

Other features include <1μA shutdown current, integrated soft-start, short-circuit protection, current limit and thermal overload protection. The LTC3113 is housed in the thermally enhanced 16-lead (4mm × 5mm × 0.75mm) DFN and 20-lead TSSOP packages.


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
LTC3113EDHD#PBF 5x4 DFN-16 DHD E 05-08-1707 Yes
LTC3113EDHD#TRPBF 5x4 DFN-16 DHD E 05-08-1707 Yes
LTC3113EFE#PBF TSSOP-20 FE E 05-08-1663 (CA) Yes
LTC3113EFE#TRPBF TSSOP-20 FE E 05-08-1663 (CA) Yes
LTC3113IDHD#PBF 5x4 DFN-16 DHD I 05-08-1707 Yes
LTC3113IDHD#TRPBF 5x4 DFN-16 DHD I 05-08-1707 Yes
LTC3113IFE#PBF TSSOP-20 FE I 05-08-1663 (CA) Yes
LTC3113IFE#TRPBF TSSOP-20 FE I 05-08-1663 (CA) Yes

LTC3113 Package Drawing
LTC3113 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
LTC3113EDHD#PBF 5x4 DFN-16 E $5.64 $3.95 Yes
LTC3113EDHD#TRPBF 5x4 DFN-16 E $4.01 Yes
LTC3113EFE#PBF TSSOP-20 E $5.93 $4.15 Yes
LTC3113EFE#TRPBF TSSOP-20 E $4.21 Yes
LTC3113IDHD#PBF 5x4 DFN-16 I $6.22 $4.35 Yes
LTC3113IDHD#TRPBF 5x4 DFN-16 I $4.41 Yes
LTC3113IFE#PBF TSSOP-20 I $6.53 $4.57 Yes
LTC3113IFE#TRPBF TSSOP-20 I $4.63 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
DC1551A LTC3113EDHD Demo Board $175.00
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