MAX5939LESA

Programmable Features:	Circuit Breaker, Current Limit, OVP, UVLO
Base Part Number:	MAX5939
Feature Pins:	--
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Current - Supply:	700µA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	--
Voltage - Supply:	-80 V ~ -20 V
Series:	--
Features:	Fault Timeout, Latched Fault, Thermal Limit
Applications:	-48V
Internal Switch(s):	No
Number of Channels:	1
Type:	Hot Swap Controller
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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Introduction

MAX5939LESA is a hot swap controller designed by Maxim Integrated to protect power supplies during hot plugging, over-current, and over-voltage conditions. This controller is designed to stay operational in environments up to 125°C.The product features a maximum voltage, adjustable current limit, overvoltage protection, soft-start, inrush current limit, current balancing, fast-off support and power fail detect.

Application Fields of MAX5939LESA

MAX5939LESA has multiple application fields, one of which is automotive applications. This controller is especially suitable for automotive applications due to its high robustness and tolerance of high temperatures. It can also be used in a wide range of safety critical and high wear applications. MAX5939LESA is also used in industrial applications. It has a wide operating temperature range up to 125°C, as well as very high accuracy and long term stability of parameters. This makes it suitable for use in harsh industrial and harsh environment applications.MAX5939LESA is also used in medical applications. The high-precision settings and strong temperature range of the controller make it ideal for use in medical applications, where reliability, accuracy and safety are critical.

Working Principle of MAX5939LESA

MAX5939LESA is a hot swap controller. It is designed to control the power supply voltage and current during the hot plugging and unplugging of the system and to protect against fault conditions. When the power supply voltage and current exceed the threshold values, the switch is disabled and the power supply is shut down. This is done in order to prevent over-current or over-voltage conditions. The same occurs in a fault situation, where the switch is disabled to protect the system.One of the main features of MAX5939LESA is its adjustable current limit. This feature allows the current limit to be adjusted to the desired value in order to protect against over-current and over-voltage conditions. In addition, MAX5939LESA has an overvoltage protection feature which shut offs the power supply if the voltage exceeds the threshold.Another notable feature of MAX5939LESA is its fast-off support. This feature allows the controller to cut off the power supply rapidly in the case of fault conditions. This ensures quick response times and improved safety of the system.Finally, MAX5939LESA has a power fail detect feature. This feature allows the controller to detect a power fail event and shut off the power supply. This ensures that the system is protected from improper shutdowns or over-voltage conditions.

Conclusion

MAX5939LESA is a hot swap controller designed by Maxim Integrated to protect power supplies during hot plugging, over-current, and over-voltage conditions. This controller is designed to stay operational in environments up to 125°C. The product features a maximum voltage, adjustable current limit, overvoltage protection, soft-start, inrush current limit, current balancing, fast-off support and power fail detect. To conclude, the product is suitable for a wide range of applications, from automotive to medical, due to its excellent feature set and robustness.

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