LT1641-1
LT1641-2

PRODUCTION

Positive High Voltage Hot Swap Controllers

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.84

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Part Details

Allows Safe Board Insertion and Removal from a Live Backplane
Controls Supply Voltage from 9V to 80V
Programmable Analog Foldback Current Limiting
High Side Drive for an External N-Channel
Latched Operation Mode (LT1641-1)
Automatic Retry (LT1641-2)
User Programmable Supply Voltage Power-Up Rate
Undervoltage Lockout
Overvoltage Protection
Both are available in 8-Lead SO Package

Part Models: 8
1ku List Price: Starting From $2.84

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
LT1641-1CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-1CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-1IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-1IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-2CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-2CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-2IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1641-2IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LT1641-1CS8#PBF	PRODUCTION
LT1641-1CS8#TRPBF	PRODUCTION
LT1641-1IS8#PBF	PRODUCTION
LT1641-1IS8#TRPBF	PRODUCTION
LT1641-2CS8#PBF	PRODUCTION
LT1641-2CS8#TRPBF	PRODUCTION
LT1641-2IS8#PBF	PRODUCTION
LT1641-2IS8#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1641-1CS8#PBF	PRODUCTION
LT1641-1CS8#TRPBF	PRODUCTION
LT1641-1IS8#PBF	PRODUCTION
LT1641-1IS8#TRPBF	PRODUCTION
LT1641-2CS8#PBF	PRODUCTION
LT1641-2CS8#TRPBF	PRODUCTION
LT1641-2IS8#PBF	PRODUCTION
LT1641-2IS8#TRPBF	PRODUCTION
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0060_Form Material_Report Delta Qualification Matrix
LT1641-1CS8#PBF	PRODUCTION
LT1641-1CS8#TRPBF	PRODUCTION
LT1641-1IS8#PBF	PRODUCTION
LT1641-1IS8#TRPBF	PRODUCTION
LT1641-2CS8#PBF	PRODUCTION
LT1641-2CS8#TRPBF	PRODUCTION
LT1641-2IS8#PBF	PRODUCTION
LT1641-2IS8#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
High Voltage Hot Swap Controllers 1
LT4256-1 LT4256-2		Positive High Voltage Hot Swap Controllers

Parts	Product Life Cycle	Description
LTC4238	LAST TIME BUY	High Voltage High Current Hot Swap Controller

Tools & Simulations

LTspice 1

LT1641-1 - Hot Swap Controllers

Models for the following parts are available in LTspice:

LT1641-1
LT1641-2

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

LT1641-1, LT1641-2, LT4256-1, and LT4256-2 Positive High Voltage Hot Swap Controller

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Product Details

Demonstration circuit 1354B is a positive high voltage hot swap controller featuring either the LT^®1641-1, LT1641-2, LT4256-1, or LT4256-2.

The board facilitates measurement of transient conditions, steady state operation with different loads, and fault conditions. The Controller responds to fault conditions such as input undervoltage(UV), output power good (PWRGD) fault, and overcurrent and response can be verified by the output voltage (V_OUT) LED state and PWRGD pin signal. The LT1641-1 and LT4256-1 latch off if MOSFET shuts off under overcurrent condition, while LT1641-2 and LT4256-2 automatically restart after time-out delay.

The DC1354B contains one hot swap controller, power MOSFET, current sense resistor, enable circuit, input voltage clamp, gate protection circuit, resistive output voltage divider for feedback signal, and three LEDs to indicate the presence of input and output voltages and power good condition.