LT1641-2IS8

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LT1641-2IS8

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Hot Swap Voltage Controllers LT1641-1 and -2 - Positive High Voltage Hot Swap Controllers

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Specifications

Attribute Value

Overview

Description

The LT1641-2IS8 is a hot-swap controller designed to manage the safe insertion and removal of circuit boards in a live backplane. This device is particularly suited for applications in telecommunications, servers, and networking equipment where boards need to be hot-swapped without disrupting the system's operation.
Key features of the LT1641-2IS8 include:
1. Inrush Current Control: It limits inrush current to prevent damage to the components by controlling the power-up sequence.
2. Fault Protection: The controller can detect and respond to overcurrent conditions, providing short-circuit protection.
3. Undervoltage Lockout: Ensures the device only turns on when the input voltage is above a specified threshold, preventing undervoltage conditions.
4. Shutdown Capability: Allows for manual shutdown of the device through a logic input.
5. Status Outputs: Provides feedback through status pins to indicate board presence and power good conditions.
The LT1641-2IS8 is typically available in an 8-pin SOIC package, making it compact and suitable for a variety of high-reliability electronic applications.

Equivalent

The LT1641-2IS8 is a Positive Voltage Hot Swap Controller. Equivalent products include the Texas Instruments TPS2391, Maxim Integrated MAX5902, and ON Semiconductor NIS5020. These components serve similar functions in managing inrush current and ensuring safe hot swapping in electronic systems. Always verify specifications to ensure compatibility for your specific application.

Features

The LT1641-2IS8 is a hot swap controller IC designed by Analog Devices (formerly Linear Technology). It is used to safely insert and remove boards from a live backplane by controlling the power-up process and providing protection to circuit components. Key features include:
1. Wide Operating Voltage Range: It supports input voltages from 9V to 80V, making it suitable for a variety of applications.
2. Overcurrent Protection: The device provides programmable current limiting to protect against overcurrent conditions.
3. Fault Timer: It includes an adjustable fault timer that helps prevent damage from prolonged overcurrent situations.
4. Under-Voltage Lockout (UVLO): The UVLO feature ensures the device remains off below a set threshold voltage to avoid malfunction.
5. Power Good Signal: Provides a power good status output to indicate when the board is powered up successfully.
6. Soft-Start Capability: Programmable soft-start limits inrush current during startup.
7. Thermal Shutdown: Protects the device from damage due to overheating.
Overall, the LT1641-2IS8 ensures safe hot swapping with robust protection mechanisms.

Pinout

The LT1641-2IS8 is a Hot Swap controller designed to allow safe insertion and removal of circuit boards in live backplanes. It typically comes in an 8-pin SOIC package. Here's a brief overview of its pin functions:
1. VCC (Pin 1): This is the supply voltage pin where the input voltage is applied.
2. GND (Pin 2): Ground reference for the IC.
3. SENSE (Pin 3): Connects to the sense resistor to monitor the load current.
4. GATE (Pin 4): Drives the gate of an external N-channel MOSFET to control the power to the load.
5. FAULT (Pin 5): An open-drain output that indicates an overcurrent or other fault condition.
6. TIMER (Pin 6): Sets the timing for fault detection and recovery using an external capacitor.
7. ON (Pin 7): Enables or disables the device; drive high to enable.
8. PGOOD (Pin 8): An open-drain output indicating the output power is good (valid voltage level).
These features ensure controlled power sequencing and protection against overcurrent conditions, making it essential in applications requiring reliable power management.

Manufacturer

The LT1641-2IS8 is manufactured by Linear Technology, a company known for designing, manufacturing, and marketing a broad line of standard high-performance analog integrated circuits. Linear Technology was founded in 1981 and is recognized for its expertise in producing power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. In 2017, Linear Technology was acquired by Analog Devices, Inc., a company that also specializes in analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in a wide array of electronic equipment. Analog Devices continues to support and expand upon Linear Technology's product offerings, effectively merging expertise and broadening their portfolio in the analog technology space.

Application

The LT1641-2IS8 is a Hot Swap controller designed for safe insertion and removal of circuit boards in live backplanes, common in telecommunications and networking equipment. It provides functions such as overcurrent protection, inrush current limiting, and fault detection. Key application areas include:
1. Telecommunications: Ensuring safe hot swapping in base stations and network infrastructure.
2. Data Centers: Managing power distribution for servers and storage systems.
3. Industrial Systems: Providing reliability in automation and control systems.
4. Networking Equipment: Supporting routers and switches with seamless hot swapping.
5. Power Supply Systems: Protecting against faults in high-reliability power systems.
Its compact design makes it suitable for high-density electronic applications.

Package

The LT1641-2IS8 is an integrated circuit packaged in an 8-pin Small Outline Integrated Circuit (SOIC) package.

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