LTC4253AIGN#PBF

Programmable Features:	Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO
Base Part Number:	LTC4253
Feature Pins:	DRAIN, EN2, EN3, OV, /PWRGD1, /PWRGD2, /PWRGD3, RESET, SS, SQTIMER, TIMER, UV
Supplier Device Package:	16-SSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Current - Supply:	1.1mA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	--
Voltage - Supply:	-48V
Series:	--
Features:	Latched Fault
Applications:	-48V
Internal Switch(s):	No
Number of Channels:	1
Type:	Hot Swap Controller, Sequencer
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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Introduction to LTC4253AIGN#PBF

The LTC4253AIGN#PBF is a Hot Swap controller designed for reliable circuit protection and control for high-current applications. It is a member of Linear Technology’s extensive family of power management integrated circuits (PMICs). The LTC4253AIGN#PBF is especially suited for powering heavy-load peripherals, such as disk drives and PCs, telecommunications equipment, base station systems, and distributed power systems.

Features of the LTC4253AIGN#PBF

The LTC4253AIGN#PBF is capable of supporting a wide range of current levels and its features include:- High Level of Output Current - up to 48V at 60A.- Over-Voltage Protection - Features an over-voltage clamp (OVP) that triggers whenever the output voltage rises above a pre-defined level.- Short-Circuit Protection - Includes a current-limiting scheme that turns off the load and attempts to limit the output current to safe levels in the event of a short.- Thermal Protection - Automatically shuts down the circuit if its internal temperature reaches a pre-defined level.- Built-In Soft Start - Improves system start-up times and eliminates high current inrush.- Fault Status Output - When the fault is detected, such as over-voltage, output current, or thermal limit, the fault status output changes state to indicate a fault condition and will stay in this state until it is cleared.- Low Profile - With dimensions of only 8x7x3mm, the LTC4253AIGN#PBF takes up minimal space.

How Does The LTC4253AIGN#PBF Work?

The LTC4253AIGN#PBF has two main components – the power switch and the control logic. The power switch is a simple MOSFET device that is controlled by the control logic. When the output voltage is below the OVP level, the MOSFET is turned on, allowing the system power to be delivered to the load. Should the output voltage exceed the OVP level, the MOSFET will be turned off, protecting the system. The control logic is responsible for monitoring the load current and providing fault protection, as well as soft start and thermal protection.

Applications for the LTC4253AIGN#PBF

The LTC4253AIGN#PBF is ideally suited for applications that require reliable, high-current protection and control, such as:- PCs and disk drives- Base station systems- Telecommunications equipment - Distributed power systems- Industrial equipment- Battery-powered systems

Conclusion

The LTC4253AIGN#PBF is a Hot Swap controller designed to provide reliable circuit protection and control for high-current applications. It is capable of supporting a wide range of current levels, and its features include over-voltage protection, short-circuit protection, thermal protection, a built-in soft start feature and a fault status output. Its small footprint makes it ideal for applications that have space constraints, making it a great choice for PCs, disk drives, base station systems, telecommunications equipment, distributed power systems, industrial equipment and battery-powered system.

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