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LTC4260IUH

LTC4260IUH Description

The LTC4260IUH from Analog Devices Inc. is a general-purpose hot swap controller and monitor designed for surface-mount applications. Operating within a wide supply voltage range of 8.5V to 80V, it provides robust power management for systems requiring safe insertion and removal of live boards. This single-channel IC integrates advanced I2C communication, enabling real-time monitoring and configuration. Although now obsolete, its programmable features—including auto-retry, circuit breaker, current limit, fault timeout, latched fault, OVP (Overvoltage Protection), slew rate control, and UVLO (Undervoltage Lockout)—make it a versatile solution for high-reliability applications. Packaged in a 32-pin QFN (Quad Flat No-Leads) tube, it is suited for industrial and telecom environments.

LTC4260IUH Features

• Wide Voltage Range (8.5V–80V): Supports high-voltage applications, ideal for power distribution systems.
• I2C Interface: Enables digital communication for real-time monitoring and diagnostics.
• Programmable Protection: Configurable current limit, OVP, UVLO, and fault response (latched or auto-retry).
• Slew Rate Control: Minimizes inrush current during hot-swapping, protecting sensitive components.
• Low Supply Current (2mA): Reduces power overhead in standby or active modes.
• No Internal Switch: Allows flexibility in selecting external MOSFETs for optimized performance.

LTC4260IUH Applications

The LTC4260IUH excels in:

• Telecom/Networking Equipment: Safely manages hot-swappable line cards or power modules.
• Industrial Control Systems: Protects against voltage transients and inrush currents in PLCs and motor drives.
• Server/Data Center PSUs: Ensures reliable power sequencing and fault isolation.
• High-Availability Systems: Where latched fault detection prevents repeated failures under fault conditions.

Conclusion of LTC4260IUH

While obsolete, the LTC4260IUH remains a benchmark for high-voltage hot swap controllers, offering programmable protection, I2C configurability, and robust slew rate control. Its lack of an internal switch allows designers to tailor external components for specific needs, making it adaptable to demanding industrial and telecom applications. Engineers seeking legacy replacements should consider newer Analog Devices alternatives with similar feature sets but improved availability.