LT8648S

RECOMMENDED FOR NEW DESIGNS

42V, 15A Synchronous Step-Down Silent Switcher 2

Data Sheet (Rev. E) Product Selection Table

Part Models: 11
1ku List Price: Starting From $6.47

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Part Details

Silent Switcher^®2 Architecture
- Ultralow EMI Emissions on Any PCB
- Eliminates PCB Layout Sensitivity
- Internal Bypass Capacitors Reduce Radiated EMI
- Optional Spread Spectrum Modulation
High Efficiency at High Frequency
- Up to 95.5% Efficiency at 1MHz, 12V_IN to 5V_OUT
- Up to 93% Efficiency at 2MHz, 12V_IN to 5V_OUT
Wide Input Voltage Range: 3V to 42V
15A Output Current
Low Quiescent Current Burst Mode^® Operation
- 100μA I_Q Regulating 12V_IN to 5V_OUT
- Output Ripple < 10mV_P-P

External Compensation: Fast Transient Response and Current Sharing
Fast Minimum Switch On-Time: 25ns
Low Dropout Under All Conditions: 35mV at 1A
Forced Continuous Mode
Adjustable and Synchronizable: 200kHz to 2.2MHz
Output Soft-Start and Power Good
Safely Tolerates High Reverse Current
36-Lead 7mm × 4mm LQFN Package (LT8648S) and Exposed Back Package (LT8648SP)
AEC-Q100 Qualified for Automotive Applications

Part Models: 11
1ku List Price: Starting From $6.47

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
LT8648SEV#PBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SEV#TRPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SEV#WPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SEV#WTRPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SHV#PBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SHV#WPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SHV#WTRPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SJV#PBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SJV#TRPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SJV#WPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8648SJV#WTRPBF	36-Lead LQFN (7mm x 4mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 6, 2024 - 23_0287 Notification of Qualification on SMT Paste, and Die Thickness Change for LT8648S
		PCN23_0287_Form Material_Report Qualification Results Summary Delta Qualification Matrix Other
LT8648SEV#PBF	PRODUCTION
LT8648SEV#TRPBF	PRODUCTION
LT8648SEV#WPBF	PRODUCTION
LT8648SEV#WTRPBF	PRODUCTION
LT8648SHV#PBF	PRODUCTION
LT8648SHV#WPBF	PRODUCTION
LT8648SHV#WTRPBF	PRODUCTION
LT8648SJV#PBF	PRODUCTION
LT8648SJV#TRPBF	PRODUCTION
LT8648SJV#WPBF	PRODUCTION
LT8648SJV#WTRPBF	PRODUCTION

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

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT8648S

LTpowerCAD 1

LT8648S Project - DC2841A 6-42Vin to 5Vout/15A, 400kHz

Design tools for the following parts are available in LTpowerCAD:

LT8648S

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.

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LT8648S

Part Details

Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Technical Articles 1

Solutions Bulletin & Brochure 1

Book & eBook 1

Webcast 2