LTC3775

PRODUCTION

High Frequency Synchronous Step-Down Voltage Mode DC/DC Controller

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.18

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Part Details

Wide V_IN Range: 4.5V to 38V
Line Feedforward Compensation
Low Minimum On-Time: t_ON(MIN) < 30ns
Powerful On-board MOSFET Drivers
Leading Edge Modulation Voltage Mode Control
±0.75%, 0.6V Reference Voltage Accuracy Over Temperature
V_OUT Range: 0.6V to 0.8V_IN
Programmable, Cycle-by-Cycle Peak Current Limit
Sense Resistor or R_DS(ON) Current Sensing
Programmable Soft-Start
Synchronizable Fixed Frequency from 250kHz to 1MHz
Selectable Pulse-Skipping or Forced Continuous Modes of Operation
Low Shutdown Current: 14μA Typical
Thermally Enhanced 16-Lead MSOP and 3mm × 3mm QFN Packages

Part Models: 8
1ku List Price: Starting From $2.18

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
LTC3775EMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775EMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775EUD#PBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775EUD#TRPBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775IMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775IMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775IUD#PBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3775IUD#TRPBF	16-Lead QFN (3mm x 3mm x 0.75mm 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
LTC3775EMSE#PBF	PRODUCTION
LTC3775EMSE#TRPBF	PRODUCTION
LTC3775EUD#PBF	PRODUCTION
LTC3775EUD#TRPBF	PRODUCTION
LTC3775IMSE#PBF	PRODUCTION
LTC3775IMSE#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3775EMSE#PBF	PRODUCTION
LTC3775EMSE#TRPBF	PRODUCTION
LTC3775IMSE#PBF	PRODUCTION
LTC3775IMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0132_Form Material_Report
LTC3775EMSE#PBF	PRODUCTION
LTC3775EMSE#TRPBF	PRODUCTION
LTC3775IMSE#PBF	PRODUCTION
LTC3775IMSE#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
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:

LTC3775

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

LTC3775EUD Demo Board | 5V ≤ VIN ≤ 26V, VOUT = 1.2V @ 15A

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Product Details

Demonstration circuit 1290A is a high frequency synchronous step-down converter featuring the LTC3775EUD. The package style for the LTC3775EUD is a 16-pin 3mm x 3mm QFN. Two versions of the demonstration board are available. DC-1290A-A has been optimized for 5V to 26V input and typically provides 1.2V/15A, while the DC1290A-B is optimized for 5V to 36V_IN range and typically provides 1.2V/10A.