LTC3770

PRODUCTION

Fast No R_SENSE^™ Step-Down Synchronous Controller with Margining, Tracking and PLL

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $4.73

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Part Details

Wide V_IN Range: 4V to 32V
±0.67% 0.6V Reference Voltage
Output Voltage Tracking Capability
Programmable Margining
Sense Resistor Optional
True Current Mode Control
2% to 90% Duty Cycle at 200kHz
t_ON(MIN) ≤ 100ns
Phase Lock 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: I_Q < 30µA
Power Good Output Voltage Monitor Tracks the Reference Input Pin
Available in (5mm × 5mm) QFN and 28-Lead SSOP Packages

Part Models: 4
1ku List Price: Starting From $4.73

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
LTC3770EG#PBF	28-Lead SSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3770EG#TRPBF	28-Lead SSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3770EUH#PBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3770EUH#TRPBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG
		PCN22_0171_Form Material_Report Delta Qualification Matrix
LTC3770EG#PBF	PRODUCTION
LTC3770EG#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
LTC3770EUH#PBF	PRODUCTION
LTC3770EUH#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
µModule Buck Regulators 1
LTM4601A LTM4601A-1		12A μModule (Power Module) Regulators with PLL, Output Tracking and Margining
Digital Power System Managers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Silicon Oscillators 1
LTC6909	PRODUCTION	1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
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:

LTC3770

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

LTC3770EUF Demo Board | Margining & Tracking, 5V ≤ VIN ≤ 28V, VOUT = 2.5V @ 10A

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Product Details

Demonstration circuit 774 is a high efficiency synchronous step-down DC/DC converter featuring the LTC3770EUH No R_SENSE controller. It operates with a 5V to 28V input voltage range and provides a 2.5V output at up to 10A.

Resources

DC774A - Demo Manual
199.00K

DC774A - Schematic
121.00K

DC774A - Design File
1.00M

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LTC3770

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Press Release 1