LT8698S
LT8698S-1

RECOMMENDED FOR NEW DESIGNS

5V 3A Output, 42V Input USB Charger with Cable Drop Compensation and Dataline Protection

Data Sheet (Rev. B) Product Selection Table

Part Models: 16
1ku List Price: Starting From $3.47

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Part Details

Wide V_IN Range Up to 42V
Programmable Cable Drop Compensation Provides Accurate 5V Regulation to Remote USB Sockets
High Speed USB 2.0 Compliant Dataline Switches
Selectable Charger Profiles Including Major Vendors’ and USB BC 1.2 Profiles
Silent Switcher^®2 Technology and Selectable Spread-Spectrum Modulation Provide Ultralow EMI
Programmable and Synchronizable Switching Frequency 300kHz to 3MHz

Robust Dataline Protection
- Tolerant of Short Condition Up to 20V
- ESD Protected Up to IEC61000-4-2 8kV Contact Discharge and 15kV Air Discharge
Available Status and Fault Output Pins
Selectable Forced Continuous or Pulse-Skipping Modes
Small 4mm × 6mm × 0.94mm LQFN Package with 0.75mm Spacing from V_IN to GND Pins
AEC-Q100 Qualified for Automotive Applications

Part Models: 16
1ku List Price: Starting From $3.47

Documentation

Data Sheet 1

LT8698S/LT8698S-1: 5V 3A Output, 42V Input USB Charger with Cable Drop Compensation and Dataline Protection Data Sheet (Rev.B) 10/13/2020

User Guide 1

DC2688A - Demo Manual (Rev.0) 03/04/2021

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
LT8698SEV#PBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV#TRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV#WPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV#WTRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV-1#PBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV-1#TRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV-1#WPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SEV-1#WTRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV#PBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV#TRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV#WPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV#WTRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV-1#PBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV-1#TRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV-1#WPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8698SJV-1#WTRPBF	32(30)-Lead (6mm × 4mm × 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Tools & Simulations

LTspice 1

LT8698S - Switching Regulators

Models for the following parts are available in LTspice:

LT8698S

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

LT8698S/LT8698S-1 | 5V 3A, 42V Input USB Charger with Cable Drop Compensation and Data Line Protection

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Product Details

Demonstration circuit 2688A is a USB charger designed to power the 5V USB V_BUS rail with up to 3A from an input voltage as high as 42V. The DC2688A circuit features the LT8698S/LT8698S-1, which is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator which features the second-generation Silent Switcher^® technology that minimizes EMI and reduces PCB layout sensitivity. The LT8698S/LT8698S-1 supports a wide variety of portable device charger profiles including USB BC 1.2 CDP, DCP, and SDP as well as common proprietary charger profiles, all of which can be easily evaluated using the DC2688A demo board. The LT8698S/LT8698S-1 also features high speed USB 2.0 compliant data line switches, robust data line protection, and programmable cable drop compensation which maintains accurate 5V V_BUS regulation even when USB sockets are separated from the LT8698S/LT8698S-1 by a long cable. These features make the LT8698S/LT8698S-1 well suited for automotive USB host applications.

There are two assembly versions. The DC2688A-A features the LT8698S, while the DC2688A-B features the LT8698S-1. The difference is that the LT8698S includes V_IN hot loop capacitors inside the IC package for improved EMI/EMC performance, while the LT8698S-1 does not include these capacitors.

Resources

DC2688A - Demo Manual (Rev.0)
2.16 M

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