LTC3823

PRODUCTION

Fast No R_SENSE^™ Step-Down Synchronous DC/DC Controller with Differential Output Sensing, Tracking and PLL

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $3.31

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Part Details

Wide V_IN Range: 4.5V to 36V
±0.67%, 0.6V Reference Voltage
Output Voltage Tracking Capability
True Remote Sensing Differential Amplifier
Sense Resistor Optional
True Current Mode Control
2% to 90% Duty Cycle at 200kHz
t_ON(MIN) < 100ns
Phase-Locked Loop Frequency Synchronization
Powerful Dual N-Channel MOSFET Driver
Adjustable Cycle-by-Cycle Current Limit
Adjustable Switching Frequency
Programmable Soft-Start
Current Foldback Protection (Disabled at Start-Up)
Output Overvoltage Protection
Micropower Shutdown: 30μA
Power Good Output Voltage Monitor Tracks the Reference Input Pin
Available in (5mm × 5mm) 32-Lead QFN and 28-Lead SSOP Narrow Packages

Part Models: 8
1ku List Price: Starting From $3.31

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
LTC3823EGN#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823EGN#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823EUH#PBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823EUH#TRPBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823IGN#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823IGN#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823IUH#PBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3823IUH#TRPBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC3823EGN#PBF	PRODUCTION
LTC3823EGN#TRPBF	PRODUCTION
LTC3823IGN#PBF	PRODUCTION
LTC3823IGN#TRPBF	PRODUCTION
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL
		PCN22_0177_Form Material_Report Delta Qualification Matrix
LTC3823EGN#PBF	PRODUCTION
LTC3823EGN#TRPBF	PRODUCTION
LTC3823IGN#PBF	PRODUCTION
LTC3823IGN#TRPBF	PRODUCTION
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LTC3823EUH#PBF	PRODUCTION
LTC3823EUH#TRPBF	PRODUCTION
LTC3823IUH#PBF	PRODUCTION
LTC3823IUH#TRPBF	PRODUCTION
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC3823EUH#PBF	PRODUCTION
LTC3823EUH#TRPBF	PRODUCTION
LTC3823IUH#PBF	PRODUCTION
LTC3823IUH#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

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Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper with Current Limit

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3823

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

LTC3823EUH Demo Board | 4.5V ≤ VIN ≤ 16V, VOUT = 2.5V @ 10A

Buy Now View Details

Product Details

Demonstration circuit 1021A is a high efficiency synchronous step-down DC/DC converter with 4.5V to 16V input range. It can provide 2.5V output with 10A maximum current. The demo board features the LTC3823EUH controller.

Resources

DC1021A - Demo Manual
1.00M

DC1021A - Schematic
31.00K

DC1021A - Design File
699.00K

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