LTC3789

RECOMMENDED FOR NEW DESIGNS

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

Part Models: 8
1ku List Price: Starting From $5.60

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Part Details

Single Inductor Architecture Allows V_IN Above, Below or Equal to the Regulated V_OUT
Programmable Input or Output Current
Wide V_IN Range: 4V to 38V
1% Output Voltage Accuracy: 0.8V < V_OUT < 38V
Synchronous Rectification: Up to 98% Efficiency
Current Mode Control
Phase-Lockable Fixed Frequency: 200kHz to 600kHz
No Reverse Current During Start-Up
Power Good Output Voltage Monitor
Internal 5.5V LDO
Quad N-Channel MOSFET Synchronous Drive
V_OUT Disconnected from V_IN During Shutdown
True Soft-Start and V_OUT Short Protection, Even in Boost Mode
Available in 28-Lead QFN (4mm × 5mm) and 28-Lead SSOP Packages

Part Models: 8
1ku List Price: Starting From $5.60

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
LTC3789EGN#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789EGN#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789EUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789EUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789IGN#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789IGN#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789IUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3789IUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

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
LTC3789EGN#PBF	PRODUCTION
LTC3789EGN#TRPBF	PRODUCTION
LTC3789IGN#PBF	PRODUCTION
LTC3789IGN#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
LTC3789EGN#PBF	PRODUCTION
LTC3789EGN#TRPBF	PRODUCTION
LTC3789EUFD#PBF	PRODUCTION
LTC3789EUFD#TRPBF	PRODUCTION
LTC3789IGN#PBF	PRODUCTION
LTC3789IGN#TRPBF	PRODUCTION
LTC3789IUFD#PBF	PRODUCTION
LTC3789IUFD#TRPBF	PRODUCTION

Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 1
LTC4380	RECOMMENDED FOR NEW DESIGNS	Low Quiescent Current Surge Stopper
Switching Regulators & Controllers 1
LTC3891	RECOMMENDED FOR NEW DESIGNS	Low I_Q, 60V Synchronous Step-Down Controller

Parts	Product Life Cycle	Description
LT8705A	RECOMMENDED FOR NEW DESIGNS	80V V_IN and V_OUT Synchronous 4-Switch Buck-Boost DC/DC Controller
LT8390A	RECOMMENDED FOR NEW DESIGNS	60V 2MHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum
LT8390	RECOMMENDED FOR NEW DESIGNS	60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum
LT8705	PRODUCTION	80V V_IN and V_OUT Synchronous 4-Switch Buck-Boost DC/DC Controller

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3789

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

LTC3789

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.

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LTC3789

Part Details

Documentation

Reliability Data 1

Application Note 1

Design Note 2

Technical Articles 2

Rarely Asked Question Page 1