LT3790

PRODUCTION

60V Synchronous 4-Switch Buck-Boost Controller

Data Sheet (Rev. B) Product Selection Table

Part Models: 8
1ku List Price: Starting From $5.66

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Part Details

4-Switch Single Inductor Architecture Allows V_IN Above, Below or Equal to V_OUT
Synchronous Switching: Up to 98.5% Efficiency
Wide V_IN Range: 4.7V to 60V
2% Output Voltage Accuracy: 1.2V ≤ V_OUT < 60V
6% Output Current Accuracy: 0V ≤ V_OUT < 60V
Input and Output Current Regulation with Current Monitor Outputs

No Top FET Refresh in Buck or Boost
V_OUT Disconnected from V_IN During Shutdown
C/10 Charge Termination and Output Shorted Flags
Capable of 100W or Greater per IC
Easy Parallel Capability to Extend Output Power
38-Lead TSSOP with Exposed Pad

Part Models: 8
1ku List Price: Starting From $5.66

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
LT3790EFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790EFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790HFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790HFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790IFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790IFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790MPFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3790MPFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT3790EFE#PBF	PRODUCTION
LT3790EFE#TRPBF	PRODUCTION
LT3790HFE#PBF	PRODUCTION
LT3790HFE#TRPBF	PRODUCTION
LT3790IFE#PBF	PRODUCTION
LT3790IFE#TRPBF	PRODUCTION
LT3790MPFE#PBF	PRODUCTION
LT3790MPFE#TRPBF	PRODUCTION
Jun 29, 2021 - 21_0132 LT3790 Electrical Characteristic Change
		PCN21_0132_Form Material_Report Revised Datasheet Specification
LT3790EFE#PBF	PRODUCTION
LT3790EFE#TRPBF	PRODUCTION
LT3790HFE#PBF	PRODUCTION
LT3790HFE#TRPBF	PRODUCTION
LT3790IFE#PBF	PRODUCTION
LT3790IFE#TRPBF	PRODUCTION
LT3790MPFE#PBF	PRODUCTION
LT3790MPFE#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
LT3790EFE#PBF	PRODUCTION
LT3790EFE#TRPBF	PRODUCTION
LT3790HFE#PBF	PRODUCTION
LT3790HFE#TRPBF	PRODUCTION
LT3790IFE#PBF	PRODUCTION
LT3790IFE#TRPBF	PRODUCTION
LT3790MPFE#PBF	PRODUCTION
LT3790MPFE#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Sense Amplifiers 1
LTC2946	RECOMMENDED FOR NEW DESIGNS	Wide Range I²C Power, Charge and Energy Monitor
High Voltage Hot Swap Controllers 1
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode

Parts	Product Life Cycle	Description
LT8390	RECOMMENDED FOR NEW DESIGNS	60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

LT3790

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

LT3790 Demo Board | Synchronous Buck-Boost, 8V ≤ VIN ≤ 56V, VOUT = 24V at up to 5A

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Product Details

The DC2123B is a 60V four-switch synchronous buck-boost controller that demonstrates the high power capability of the LT3790. The output is 24V and the maximum output current is 5A. The switching frequency is 200kHz and efficiency is as high as 98% for a 24V input.

The LT3790 is capable of high power operation. DC2123B can be altered for increased output power with higher minimum input voltage. If V_IN remains always above 20V, I_OUT can be increased to 12A⁺ (for 290W output) by changing RS2 to 4mΩ.