LTC4367HDD#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Overvoltage, Undervoltage Protection
Current - Supply:	70µA
Voltage - Supply:	2.5 V ~ 60 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-DFN (3x3)
Base Part Number:	LTC4367

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Introduction to LTC4367HDD#TRPBF

LTC4367HDD#TRPBF is a Low-Voltage Hot-Swap Power Controller that can automatically manage inrush current during hot-swap events, eliminating the need for external start-up circuitry. The device is capable of sourcing high peak currents, up to 4A in the VOUT pin. The LTC4367HDD#TRPBF operates over a wide input range of 4.5V to 20V and includes dynamic output voltage-sensing and margining features. Its high-speed turn-on time of 140µs (Load Step ≧ 3A) allows the user to respond rapidly to sudden changes in load current without sacrificing performance.

Application Field of LTC4367HDD#TRPBF

The LTC4367HDD#TRPBF is suitable for a wide range of applications such as server hot-swap, safe-Swap, redundant bus, system power supply and limited-space systems. It is ideal for applications that require both fast turn-on times and efficient power regulation. Its high-speed turn-on time of 140µs (Load Step ≧ 3A) helps to eliminate power-up time delays and its dynamic output voltage-sensing and margining features provide sensitively responses to sudden changes in load current without sacrificing performance.In addition, it is also suitable for applications that operate in a hazardous environment such as industrial and medical equipment, as its packaging is suitable for immersion cleaning and is rated up to 300V Working Voltage.

Working Principle of LTC4367HDD#TRPBF

The LTC4367HDD#TRPBF is based on a unique asynchronous-switching architecture that can source up to 4A peak current in its VOUT pin. The device contains two independent error amplifiers with programmable voltage references, enabling the user to precisely regulate the output voltage. The LTC4367HDD#TRPBF employs an advanced non-dissipative output overvoltage protection circuit that regulates the output voltage within ±1% of the set point under line, load and temperature variations.When the input supply is applied, the device begins a process of automatically monitoring the output voltage, controlling the current to the output and setting the correct output voltage. The device is capable of quickly ramping up the output current during power-up, even at currents greater than 1A. It also features soft-start and fast turn-on, enabling it to power up connected circuitry quickly and reliably.

Conclusion

To conclude, the LTC4367HDD#TRPBF is a low-voltage hot-swap power controller that provides improved safety, inrush control and hot-swap management while saving real-estate with its miniature package. Its high-speed turn-on time of 140µs (load step>=3A) and wide input range of 4.5V to 20V make it suitable for a wide range of industrial and medical applications. The device also supports dynamic output voltage-sensing and margining features, providing efficient regulation for voltage switching.

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