LT8392

Name: LT8392
Brand: Analog Devices
Price: 6.93 USD
Availability: InStock

RECOMMENDED FOR NEW DESIGNS

60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

Data Sheet (Rev. 0) Product Selection Table

Part Models: 12
1ku List Price: Starting From $6.93

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Overview

4-Switch Single Inductor Architecture Allows V_IN Above, Below or Equal to V_OUT
Up to 98% Efficiency
Proprietary Peak-Buck Peak-Boost Current Mode
Wide VIN Range: 3V (Need EXTV_CC ≥ 4.5V) to 60V
±1.5% Output Voltage Accuracy: 1V ≤ V_OUT ≤ 60V
±4% Input or Output Current Accuracy with Monitor
Spread Spectrum Frequency Modulation for Low EMI
Integrated Bootstrap Diodes
Adjustable and Synchronizable: 150kHz to 650kHz
V_OUT Disconnected from V_IN During Shutdown
Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm)

Part Models: 12
1ku List Price: Starting From $6.93

Documentation

Data Sheet 1

LT8392: 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum Data Sheet (Rev.0) 06/26/2020

User Guide 1

DC2626A - Demo Manual (Rev.0) 08/06/2020

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
LT8392EFE#PBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392EFE#TRPBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392EUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392EUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392HFE#PBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392HFE#TRPBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392HUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392HUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392JFE#PBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392JFE#TRPBF	28-Lead TSSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392JUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8392JUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products
		PCN26_0072_Form Material_Report
LT8392EFE#PBF	PRODUCTION
LT8392EFE#TRPBF	PRODUCTION
LT8392HFE#PBF	PRODUCTION
LT8392HFE#TRPBF	PRODUCTION
LT8392JFE#PBF	PRODUCTION
LT8392JFE#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report
LT8392EFE#PBF	PRODUCTION
LT8392EFE#TRPBF	PRODUCTION
LT8392HFE#PBF	PRODUCTION
LT8392HFE#TRPBF	PRODUCTION
LT8392JFE#PBF	PRODUCTION
LT8392JFE#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
LT8392HUFD#PBF	PRODUCTION
LT8392HUFD#TRPBF	PRODUCTION

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

Software Resources

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Tools & Simulations

LTspice 1

LT8392 LTspice Example Circuit - 60V 200kHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum High Efficiency Buck-Boost Voltage Regulator Input: 3V to 60V Output: 12V @ 12A, Fsw = 200kHz To emulate 12V battery and severe cold crank, input starts at 11V, falls to 3.2V, and rises to 18V.

Models for the following parts are available in LTspice:

LT8392

LTpowerCAD 1

LT8392 Project - 3-36Vin, 12Vout, 25A max, fsw = 150kHz

Design tools for the following parts are available in LTpowerCAD:

LT8392

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.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LT8392 Demo Board | 3V Minimum VIN, 12VOUT High Power Synchronous 4-Switch Buck-Boost Regulator

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Product Details

Demonstration circuit DC2626A is a 4-switch synchronous buck-boost regulator that demonstrates the high power capability of the LT8392. The output is 12V and the maximum output current is 12A for up to 144W power delivery. The switching frequency is 200kHz and efficiency can exceed 97%.

The steady-state operating input voltage range of DC2626A in which the temperature of the components is less than 90°C is from 9V to 18V. The transient operating input voltage range of DC2626A is from 3V to 36V. The output voltage and EN/UVLO are all programmed by resistor dividers. EN/UVLO is set so the circuit will turn off when the input voltage falls below 3V and will turn on when the input voltage rises above 4V. The PCB has large copper planes and extensive vias for excellent high power thermal performance.

DC2626A features MOSFETs that complement the 5V gate drive of the LT8392 to achieve high efficiency. 40V AEC-Q101 MOSFETs are used on the input and output side of the four-switch topology. Ceramic capacitors are used at both the circuit input and output because of their small size and high ripple current capability. In addition to ceramic capacitors, there are bulk aluminum polymer capacitors on the input and output to make input and output stable during transient period.

The CTRL input is pulled up to the VREF pin through a 0Ω resistor to set the output current limit to its maximum, and an external voltage on CTRL can be used to lower the current limit if the resistor is removed. A capacitor at the SS pin programs soft-start.

To improve the EMI performance, the LT8392 has spread spectrum frequency modulation. With the SYNC/SPRD pin tied to INTVCC, LT8392 spreads its switching frequency ±15% around the programmed oscillator frequency.

The PGOOD status flag indicates when output voltage is within ±10% of the final regulation voltage.

The LT8392’s proprietary peak current mode buck-boost architecture ensures DC2626A runs either in discontinuous conduction mode (DCM) or pulse-skipping mode (PSM) without reverse inductor current. Both modes enhance the light load efficiency.

The demo circuit is designed to be easily reconfigured to suit other applications, including the example schematics in the data sheet. Consult the factory for assistance

High power operation, 3V input voltage operation, 4-switch buck-boost topology, proprietary peak current mode architecture, fault protection and output current monitoring make the LT8392 attractive for high power voltage regulator circuits and also circuits whose input voltage drops to 3V such as cold crank of car battery. It is also suitable for output current regulation such as battery chargers. The LT8392JFE is available in a thermally enhanced 28 lead TSSOP package. The LT8392 data sheet must be read in conjunction with the demo manual to properly use or modify demo circuit DC2626A.