LTC4417

RECOMMENDED FOR NEW DESIGNS

Prioritized PowerPath^™ Controller

Data Sheet (Rev. G) Product Selection Table

Part Models: 12
1ku List Price: Starting From $3.66

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Overview

Selects Highest Priority Supply from Three Inputs
Blocks Reverse and Cross Conduction Currents
Wide Operating Voltage Range: 2.5V to 36V
–42V Protection Against Reverse Battery Connection
Fast Switchover Minimizes Output Voltage Droop
Low 28μA Operating Current

<1μA Current Draw from Supplies Less than V_OUT
1.5% Input Overvoltage/Undervoltage Protection
Adjustable Overvoltage/Undervoltage Hysteresis
P-Channel MOSFET Gate Protection Clamp
Cascadable for Additional Input Supplies
24-Lead Narrow SSOP and 4mm × 4mm QFN Packages

The LTC4417 connects one of three valid power supplies to a common output based on priority. Priority is defined by pin assignment, with V1 assigned the highest priority and V3 the lowest priority. A power supply is defined as valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least 256ms. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected and the next highest priority valid input is connected to the common output. Two or more LTC4417s can be cascaded to provide switchover between more than three inputs.

The LTC4417 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled output ramp feature minimizes start-up inrush current. Open drain VALID outputs indicate the input supplies have been within their OV/UV window for 256ms.

APPLICATIONS

Industrial Handheld Instruments
High Availability Systems
Battery Backup Systems
Servers and Computer Peripherals

Part Models: 12
1ku List Price: Starting From $3.66

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
LTC4417CGN#PBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417CGN#TRPBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417CUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417CUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417HGN#PBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417HGN#TRPBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417HUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417HUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417IGN#PBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417IGN#TRPBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417IUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4417IUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC4417CGN#PBF	PRODUCTION
LTC4417CGN#TRPBF	PRODUCTION
LTC4417HGN#PBF	PRODUCTION
LTC4417HGN#TRPBF	PRODUCTION
LTC4417IGN#PBF	PRODUCTION
LTC4417IGN#TRPBF	PRODUCTION
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
LTC4417CGN#PBF	PRODUCTION
LTC4417CGN#TRPBF	PRODUCTION
LTC4417HGN#PBF	PRODUCTION
LTC4417HGN#TRPBF	PRODUCTION
LTC4417IGN#PBF	PRODUCTION
LTC4417IGN#TRPBF	PRODUCTION
Dec 1, 2021 - 21_0249 LTC4417 Datasheet Limit Change
		PCN21_0249_Form Material_Report Datasheet Specification Comparison
LTC4417CGN#PBF	PRODUCTION
LTC4417CGN#TRPBF	PRODUCTION
LTC4417CUF#PBF	PRODUCTION
LTC4417CUF#TRPBF	PRODUCTION
LTC4417HGN#PBF	PRODUCTION
LTC4417HGN#TRPBF	PRODUCTION
LTC4417HUF#PBF	PRODUCTION
LTC4417HUF#TRPBF	PRODUCTION
LTC4417IGN#PBF	PRODUCTION
LTC4417IGN#TRPBF	PRODUCTION
LTC4417IUF#PBF	PRODUCTION
LTC4417IUF#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
LTC4417CGN#PBF	PRODUCTION
LTC4417CGN#TRPBF	PRODUCTION
LTC4417CUF#PBF	PRODUCTION
LTC4417CUF#TRPBF	PRODUCTION
LTC4417HGN#PBF	PRODUCTION
LTC4417HGN#TRPBF	PRODUCTION
LTC4417HUF#PBF	PRODUCTION
LTC4417HUF#TRPBF	PRODUCTION
LTC4417IGN#PBF	PRODUCTION
LTC4417IGN#TRPBF	PRODUCTION
LTC4417IUF#PBF	PRODUCTION
LTC4417IUF#TRPBF	PRODUCTION
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LTC4417CUF#PBF	PRODUCTION
LTC4417CUF#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 Qualification Results Summary
LTC4417CUF#PBF	PRODUCTION
LTC4417CUF#TRPBF	PRODUCTION
LTC4417HUF#PBF	PRODUCTION
LTC4417HUF#TRPBF	PRODUCTION
LTC4417IUF#PBF	PRODUCTION
LTC4417IUF#TRPBF	PRODUCTION
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LTC4417HUF#PBF	PRODUCTION
LTC4417HUF#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 3
LTC4352	RECOMMENDED FOR NEW DESIGNS	Low Voltage Ideal Diode Controller with Monitoring
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection
LTC2952	RECOMMENDED FOR NEW DESIGNS	Pushbutton PowerPath Controller with Supervisor

Parts	Product Life Cycle	Description
LTC4416 LTC4416-1	RECOMMENDED FOR NEW DESIGNS	36V, Low Loss Dual PowerPath Controllers for Large PFETs
LTC4418	RECOMMENDED FOR NEW DESIGNS	Dual Channel Prioritized PowerPath Controller

Tools & Simulations

LTspice 1

LTC4417 Demo Circuit - Priority Switching from 12V Main to 14.8V Battery Backup Supply

Models for the following parts are available in LTspice:

LTC4417

LTC4417 PowerPath Controller Design Tool -BETA

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