LTC1643A

PRODUCTION

PCI-Bus Hot Swap Controller

Part Models: 12
1ku List Price: Starting From $6.42

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Overview

Allows Safe Board Insertion and Removal from a Live PCI Slot
Works on either a Motherboard (LTC1643AH) or CompactPCI^™ Card (LTC1643AL/LTC1643AL-1)
Controls –12V, 3.3V, 5V, 12V Supplies
Programmable Foldback Current Limit with Circuit Breaker
User-Programmable Supply Voltage Power-Up Rate
High Side Drive for External N-Channels MOSFETs
–12V and 12V On-Chip Switches
Fault and Power-Good Outputs
Available in a Narrow 16-Lead SSOP Package

The LTC1643A is a Hot Swap^™ controller that allows a board to be safely inserted and removed from a live PCI-Bus slot. Two external N-channel transistors control the 3.3V and 5V supplies while on-chip switches control the –12V and 12V supplies. All supply voltages can be ramped up at a programmable rate. An electronic circuit breaker protects all four supplies against overcurrent faults. The foldback current limit feature limits current spikes and power dissipation when shorts occur and allows boards with large capacitances to be powered up without tripping the circuit breaker. The PWRGD output indicates when all of the supply voltages are within tolerance and the FAULT output indicates an overcurrent condition. The ON(LTC1643AH)/ON (LTC1643AL/ LTC1643AL-1) pin is used to cycle the board power or reset the circuit breaker. The LTC1643AL-1 has the ±12V power good comparators disabled.

The LTC1643A is available in a 16-pin narrow SSOP package.

Applications

PCI-Based Servers
CompactPCI Compliant Boards

Part Models: 12
1ku List Price: Starting From $6.42

Documentation

Data Sheet 1

LTC1643A: PCI-Bus Hot Swap Controller Data Sheet 08/28/2007

Reliability Data 1

R318 Reliability Data 03/22/2018

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
LTC1643AHCGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AHCGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AHIGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AHIGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AL-1CGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AL-1CGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AL-1IGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643AL-1IGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643ALCGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643ALCGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643ALIGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1643ALIGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	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
LTC1643AHCGN#PBF	PRODUCTION
LTC1643AHCGN#TRPBF	PRODUCTION
LTC1643AHIGN#PBF	PRODUCTION
LTC1643AHIGN#TRPBF	PRODUCTION
LTC1643AL-1CGN#PBF	PRODUCTION
LTC1643AL-1CGN#TRPBF	PRODUCTION
LTC1643AL-1IGN#PBF	PRODUCTION
LTC1643AL-1IGN#TRPBF	PRODUCTION
LTC1643ALCGN#PBF	PRODUCTION
LTC1643ALCGN#TRPBF	PRODUCTION
LTC1643ALIGN#PBF	PRODUCTION
LTC1643ALIGN#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package
		PCN22_0235_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1643AHCGN#PBF	PRODUCTION
LTC1643AHCGN#TRPBF	PRODUCTION
LTC1643AHIGN#PBF	PRODUCTION
LTC1643AHIGN#TRPBF	PRODUCTION
LTC1643AL-1CGN#PBF	PRODUCTION
LTC1643AL-1CGN#TRPBF	PRODUCTION
LTC1643AL-1IGN#PBF	PRODUCTION
LTC1643AL-1IGN#TRPBF	PRODUCTION
LTC1643ALCGN#PBF	PRODUCTION
LTC1643ALCGN#TRPBF	PRODUCTION
LTC1643ALIGN#PBF	PRODUCTION
LTC1643ALIGN#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
		PCN22_0066_Form Material_Report Delta Qualification Matrix
LTC1643AHCGN#PBF	PRODUCTION
LTC1643AHCGN#TRPBF	PRODUCTION
LTC1643AHIGN#PBF	PRODUCTION
LTC1643AHIGN#TRPBF	PRODUCTION
LTC1643AL-1CGN#PBF	PRODUCTION
LTC1643AL-1CGN#TRPBF	PRODUCTION
LTC1643AL-1IGN#PBF	PRODUCTION
LTC1643AL-1IGN#TRPBF	PRODUCTION
LTC1643ALCGN#PBF	PRODUCTION
LTC1643ALCGN#TRPBF	PRODUCTION
LTC1643ALIGN#PBF	PRODUCTION
LTC1643ALIGN#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 1
LTC4244	PRODUCTION	Rugged, CompactPCI Bus Hot Swap Controllers

Parts	Product Life Cycle	Description
LTC4244	PRODUCTION	Rugged, CompactPCI Bus Hot Swap Controllers

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC1643AH
LTC1643AL
LTC1643AL-1

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.