LM5064PMHX/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Hot Swap Controller, Monitor
Number of Channels:	1
Internal Switch(s):	No
Applications:	-48V
Features:	PMBus
Programmable Features:	Auto Retry, Circuit Breaker, Current Limit, Fault Timeout, Latched Fault, OVP, Thermal Limit, UVLO
Voltage - Supply:	-80 V ~ -10 V
Current - Output (Max):	--
Operating Temperature:	-40°C ~ 125°C
Current - Supply:	6mA
Mounting Type:	Surface Mount
Package / Case:	28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package:	28-HTSSOP
Feature Pins:	CL, DIODE, OVLO, PGD, PWR, /RETRY, (UVLO, EN)
Base Part Number:	LM5064

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Overview of LM5064PMHX/NOPB

The LM5064PMHX/NOPB is part of Texas Instrument\'s Hot Swap controller family, designed for monitoring and controlling inrush current of a Hot Swap function. As part of the Hot Swap controller family, the LM5064PMHX/NOPB has the capabilities and features to emit a precise current control in order to handle systems that are sensitive to inrush current limit. The LM5064PMHX/NOPB Hot Swap controller is capable of providing precision current limiting protection for precise current sharing across a power distribution network.

Features and Benefits of LM5064PMHX/NOPB

The LM5064PMHX/NOPB has several features and benefits to offer. Some of these benefits include:

• Overvoltage and overcurrent protection
• Precise current set point accuracy
• Integrated voltage-controlled current limit
• ±0.75 percent accurate current limit level
• Independent turn-on and turn-off delay
• Integrated sense resistor
• Automatic current limiting

These features and benefits provide users with precision current limiting protection for powering sensitive applications or systems.

Applications of LM5064PMHX/NOPB

The LM5064PMHX/NOPB Hot Swap controller family is suitable for applications such as power supplies, servers, switches, hubs, wireless routers and other telecommunications products. It is used to provide precise current limiting protection for powering sensitive applications and systems. The LM5064PMHX/NOPB also provides protection against over-current and over-voltage conditions.

Working Principle of LM5064PMHX/NOPB

The LM5064PMHX/NOPB Hot Swap controller functions in accordance to a simple and elegant methodology. The controller begins by measuring the voltage of the Hot Swap device’s input signal. The voltage signal is sent to the internal sense resistor which is then converted into a current signal. This signal is then compared with a set point reference voltage signal. If the signal is found to be lower than the set point, then an enable signal is sent to the power MOSFET gate. This signal then turns on the power MOSFET to enable current to flow through the system. The LM5064PMHX/NOPB also has two specific protection features: Overvoltage Protection (OVP) and Overcurrent Protection (OCP). The OVP feature monitors the input voltage and if the inrush current is higher than the specified OVP threshold set point, then the controller turns off the power MOSFET to avoid damage. The OCP feature is used once the power MOSFET is enabled, and is used to monitor the current flowing through the output load. If the current exceeds the OCP threshold level, then the controller shuts off the power MOSFET to avoid damage.

Conclusion

The LM5064PMHX/NOPB Hot Swap controller is an ideal solution for applications requiring precise current limiting protection and over-voltage or over-current protection. The integrated voltage-controlled current limit, as well as the automatic current limiting feature, are extremely beneficial for precision current sharing across power distribution networks. Furthermore, the ±0.75 percent accuracy current limit level ensures that system damage due to inrush current is avoided at all times.

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