LTC3103

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. B) Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.95

Viewing:

Part Details

Ultralow Quiescent Current: 1.8μA
Synchronous Rectification: Efficiency Up to 95%
Wide V_IN Range: 2.5V to 15V
Wide V_OUT 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 V_OUT
Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN and 10-Pin MSOP Packages

Part Models: 8
1ku List Price: Starting From $2.95

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3103EDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103EDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103EMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103EMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103IDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103IDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103IMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3103IMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LTC3103EDD#PBF	PRODUCTION
LTC3103EDD#TRPBF	PRODUCTION
LTC3103IDD#PBF	PRODUCTION
LTC3103IDD#TRPBF	PRODUCTION
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)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
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 Epoxy Change from Henkel 8290 to 8290A for MSOP (3)
		PCN24_0004_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3103EMSE#PBF	PRODUCTION
LTC3103EMSE#TRPBF	PRODUCTION
LTC3103IMSE#PBF	PRODUCTION
LTC3103IMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LTC3103EMSE#PBF	PRODUCTION
LTC3103EMSE#TRPBF	PRODUCTION
LTC3103IMSE#PBF	PRODUCTION
LTC3103IMSE#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Power System Managers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Dual-Supply Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Multiple Output Buck Regulators 1
LTC3880	RECOMMENDED FOR NEW DESIGNS	Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
PowerPath, Ideal Diodes, and Load Switches 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Parts	Product Life Cycle	Description
LTC3104	RECOMMENDED FOR NEW DESIGNS	2.6μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter and 10mA LDO

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3103

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.

Evaluation Kits

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

Buy Now View Details

Product Details

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.

Resources

DC1883A - Design Files
741.00K

DC1883A - Demo Manual
277.00K

DC1883A - Schematic
38.00K

Reference Designs

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications