LTC3103
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3103

1.8μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.95
Features
  • Ultralow Quiescent Current: 1.8μA
  • Synchronous Rectification: Efficiency Up to 95%
  • Wide VIN Range: 2.5V to 15V
  • Wide VOUT Range: 0.6V to 13.8V
  • 300mA Output Current
  • User-Selectable Automatic Burst Mode® or Forced Continuous Operation
  • Accurate and Programmable RUN Pin Threshold
  • 1.2MHz Fixed Frequency PWM
  • Internal Compensation
  • Power Good Status Output for VOUT
  • Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN and 10-Pin MSOP Packages
Additional Details
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The LTC3103 is a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current.

The LTC3103 offers two operational modes: automatic Burst Mode operation and forced continuous mode allowing the user the ability to optimize output voltage ripple, noise and light load efficiency. With Burst Mode operation enabled, the typical DC input supply current at no load drops to 1.8μA maximizing the efficiency for light loads. Selection of forced continuous mode provides very low noise constant frequency, 1.2MHz operation.

Additionally, the LTC3103 includes an accurate RUN comparator, thermal overload protection, a power good output and an integrated soft-start feature to guarantee that the power system start-up is well controlled.

Applications

  • Remote Sensor Networks
  • Distributed Power Systems
  • Multicell Battery or SuperCap Regulator
  • Energy Harvesters
  • Portable Instruments
  • Low Power Wireless Systems
Part Models 8
1ku List Price Starting From $2.95

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Jul 31, 2020

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Jun 5, 2024

- 24_0004

Epoxy Change from Henkel 8290 to 8290A for MSOP (3)

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LTC3103IMSE#PBF

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LTC3103IMSE#TRPBF

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Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

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Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jul 31, 2020

- 20_0245

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3103EDD#PBF

PRODUCTION

LTC3103EDD#TRPBF

PRODUCTION

LTC3103EMSE#PBF

PRODUCTION

LTC3103EMSE#TRPBF

PRODUCTION

LTC3103IDD#PBF

PRODUCTION

LTC3103IDD#TRPBF

PRODUCTION

LTC3103IMSE#PBF

PRODUCTION

LTC3103IMSE#TRPBF

PRODUCTION

Jun 5, 2024

- 24_0004

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP (3)

LTC3103EMSE#PBF

PRODUCTION

LTC3103EMSE#TRPBF

PRODUCTION

LTC3103IMSE#PBF

PRODUCTION

LTC3103IMSE#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3103EMSE#PBF

PRODUCTION

LTC3103EMSE#TRPBF

PRODUCTION

LTC3103IMSE#PBF

PRODUCTION

LTC3103IMSE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC1883A

LTC3103EDD Demo Board I 2.5 ≤ VIN ≤ 15V, VOUT = 1.8V @ 300mA

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DC1883A

LTC3103EDD Demo Board I 2.5 ≤ VIN ≤ 15V, VOUT = 1.8V @ 300mA

LTC3103EDD Demo Board I 2.5 ≤ VIN ≤ 15V, VOUT = 1.8V @ 300mA

Product Detail

Demonstration Circuit 1883A features the LTC3103, a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current. The IC operates with a fixed frequency oscillator at 1.2MHz. The LTC3103 has two user selectable (JP2) operating modes: Burst Mode® operation and forced continuous operation (fixed frequency PWM). The IC has internal compensation and an accurate programmable RUN pin.

The LTC3103 operates with a 2.5V to 15V input voltage range. The demo board has been designed with a main output set to 1.8V.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, 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.

Reference Designs

Reference Designs 1

DK-DEV-5CEA7N Dev Kit

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altera-cyclone-v-e-development-kit

altera-cyclone-v-e-development-kit

Circuits from the lab

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