LTC3122

RECOMMENDED FOR NEW DESIGNS

15V, 2.5A Synchronous Step-Up DC/DC Converter with Output Disconnect

Data Sheet Product Selection Table

Part Models: 10
1ku List Price: Starting From $2.81

Viewing:

Part Details

V_IN Range: 1.8V to 5.5V, 500mV After Start-Up
Output Voltage Range: 2.2V to 15V
800mA Output Current for V_IN = 5V and V_OUT = 12V
Output Disconnects from Input When Shut Down
Synchronous Rectification: Up to 95% Efficiency
Inrush Current Limit
Up to 3MHz Adjustable Switching Frequency Synchronizable to External Clock
Selectable Burst Mode^® Operation: 25μA I_Q
Output Overvoltage Protection
Soft-Start
<1μA I_Q in Shutdown
12-Lead, 3mm × 4mm × 0.75mm Thermally Enhanced DFN and MSOP Packages

Part Models: 10
1ku List Price: Starting From $2.81

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
LTC3122EDE#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122EDE#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122EMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122EMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122HMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122HMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122IDE#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122IDE#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122IMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3122IMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LTC3122EDE#PBF	PRODUCTION
LTC3122EDE#TRPBF	PRODUCTION
LTC3122EMSE#PBF	PRODUCTION
LTC3122EMSE#TRPBF	PRODUCTION
LTC3122HMSE#PBF	PRODUCTION
LTC3122HMSE#TRPBF	PRODUCTION
LTC3122IMSE#PBF	PRODUCTION
LTC3122IMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LTC3122EMSE#PBF	PRODUCTION
LTC3122EMSE#TRPBF	PRODUCTION
LTC3122HMSE#PBF	PRODUCTION
LTC3122HMSE#TRPBF	PRODUCTION
LTC3122IMSE#PBF	PRODUCTION
LTC3122IMSE#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3122HMSE#PBF	PRODUCTION
LTC3122HMSE#TRPBF	PRODUCTION
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3122HMSE#PBF	PRODUCTION
LTC3122HMSE#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
PowerPath, Ideal Diodes, and Load Switches 1
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller
Silicon Oscillators 1
LTC6908		Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation

Parts	Product Life Cycle	Description
LTC3124	RECOMMENDED FOR NEW DESIGNS	15V, 5A 2-Phase Synchronous Step-Up DC/DC Converter with Output Disconnect

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3122

LTpowerCAD 1

LTC3122 Project - 15V, 2.5A Synchronous Boost Converter (1.8-5.5V to 12V @ 0.8A)

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.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LTC3122EDE Demo Board I 1.8V to 5.5VIN, 12VOUT @ 0.8A

Buy Now View Details

Product Details

Demonstration circuit 1764A is a 5.5V input, 12V output at 800mA synvhronous boost DC/DC power supply featuring the LTC3122. The IC includes internal high and low side 2.5A switches and features selectable PWM or Burst Mode^® operation for high efficiency at low output current. The board operates from an input voltage as low as 1.8V and continues to operate down to 500mV once started. The output is fixed at 12V although other voltages between 2.2V and 15V can be selected by resistor changes.

The IC includes soft-start and input current limit, adjustable switching frequency with the ability to synchronize to an external clock, and output overvoltage protection with output disconnect.

Resources

DC1764A - Schematic
63.00K

DC1764A - Design Files
680.00K

DC1764A - Demo Manual
116.00K

Latest Discussions

2 Years Ago

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 1