LTC1643

Obsolete

LTC1643

PCI-Bus Hot Swap Controller

Obsolete

Alternative Part 2

LTC1643A

PRODUCTION

PCI-Bus Hot Swap Controller

LTC4244

PRODUCTION

Rugged, CompactPCI Bus Hot Swap Controllers

LTC1643A

PRODUCTION

PCI-Bus Hot Swap Controller

LTC4244

PRODUCTION

Rugged, CompactPCI Bus Hot Swap Controllers

Obsolete

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Features

Obsolete - Datasheet For Reference Only. Contact Analog Devices for Potential Replacement
Allows Safe Board Insertion and Removal from a Live PCI Slot
Works on either a Motherboard (LTC1643H) or CompactPCI^™ Card (LTC1643L/LTC1643L-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-Channel MOSFETs
–12V and 12V On-Chip Switches
Fault and Power-Good Outputs

Additional Details

Obsolete - Data Sheet For Reference Only

The LTC1643 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(LTC1643H)/ON (LTC1643L/LTC1643L-1) pin is used to cycle the board power or reset the circuit breaker. The LTC1643L-1 has the ±12V power good comparators disabled.

The LTC1643 is available in a 16-pin narrow SSOP package.

Applications

PCI-Based Servers
CompactPCI Compliant Boards

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Technical Documents 4

R318 Reliability Data 03/22/2018

Design Note 200: Hot Swapping the CompactPCI Bus 02/01/1999

Hot Swapping the PCI Bus Using the LTC1643 08/01/1998

LTC1643: PCI-Bus Hot Swap Controller Obsolete Data Sheet 08/22/2007

Alternative Parts 2

Parts	Product Life Cycle	Description
LTC1643A	PRODUCTION	PCI-Bus Hot Swap Controller
LTC4244	PRODUCTION	Rugged, CompactPCI Bus Hot Swap Controllers

LTspice 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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.