LT1640AHCN8

Hot Swap Controllers Overview

The LT1640AHCN8 is a negative voltage hot swap controller designed for -48V systems. It operates within a supply voltage range of -10V to -80V and draws a typical operating current of 1.3 mA. The device features a single channel with programmable current limiting, overvoltage protection (OVP), undervoltage lockout (UVLO), fault timeout, and auto-retry capabilities. It is housed in an 8-pin PDIP package and functions reliably across a temperature range of 0°C to +70°C.

Hot Swap Controllers Feature Summary

• Integrated circuit breaker functionality with programmable current limit control
• Built-in protection mechanisms including overvoltage detection and undervoltage lockout
• Configurable fault handling with automatic retry logic

Hot Swap Controllers Applications

• -48V telecommunications infrastructure
• Negative rail power distribution systems
• Industrial equipment requiring controlled power insertion

Hot Swap Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific suffix matches the required package type and temperature grade. Check for RoHS compliance status and ensure the part number corresponds to the exact revision needed for your design. Validate lead times as availability may vary due to manufacturing constraints.

Hot Swap Controllers Selection Notes

Select this controller for applications requiring precise management of negative voltage rails during hot insertion. Ensure the external sense resistor values align with the desired current limit thresholds. Verify that the system's maximum transient voltages remain within the -80V absolute maximum rating to prevent device damage.

Hot Swap Controllers Part Context

This component belongs to the LT1640A family of negative voltage hot swap controllers from Analog Devices. It serves as a specialized power management integrated circuit (PMIC) designed to protect downstream loads and upstream power supplies during board insertion and removal events in high-reliability environments.

Hot Swap Controllers Replacement Considerations

LT1640ALCS8#PBF: SOIC-8 package variant with similar electrical characteristics.