LTC2938HDE#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Four Power Supply Monitor
Voltage - Input:	--
Voltage - Supply:	1 V ~ 5 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	12-WFDFN Exposed Pad
Supplier Device Package:	12-DFN (4x3)
Base Part Number:	LTC2938

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Background

LTC2938HDE#TRPBF is a power management integrated circuit (PMIC) specifically designed to control and monitor operation of high current and high voltage applications. This chip manufactured by Linear Technology provides a cost-effective solution for power supply design and power system control. This device combines several functions and is capable of managing high power applications while employing integrated fault protection.

Application Field

The LTC2938HDE#TRPBF is a useful solution for customers who are involved in power electronics. By incorporating an overvoltage monitor, an overcurrent monitor, a current monitor and a thermistor monitor, the device is perfect for motor control applications, automotive and industrial power applications, as well as high current telecom applications. The device offers features such as automatic tracking of optimal power supply range for high accuracy, transient protection for MOSFETs and IGBTs, shutdown control due to overvoltage or overcurrent conditions, good temperature monitoring for interconnection failures, current and temperature monitoring with accurate SPI interfacing, protection against overload and overvoltage, and under-voltage lock out (UVLO).

Working Principle

The LTC2938HDE#TRPBF is a high-performance power management integrated circuit (PMIC). The device includes a voltage monitor (VMON) circuit which monitors the voltage of a power supply to detect fault conditions such as overvoltage and undervoltage. The device also contains an overcurrent monitor (OCMON) circuit which monitors the current level in a power supply to detect fault conditions such as overcurrent. The device also includes a current monitor (ICMON) circuit which monitors the current level on a power supply and detects faults such as overcurrent. The device also includes a thermistor monitor (TMON) circuit which monitors the temperature of a power supply to detect faults such as excessive power dissipation.The voltage monitor (VMON) circuit has two inputs which are connected to two separate points in a power supply. The voltage monitor circuit detect any overvoltage and undervoltage conditions on the power supply by comparing the voltage of the two points. The overcurrent monitor (OCMON) circuit is connected to sense a power supply and detect overcurrent conditions by measuring the current level in the power supply. The current monitor (ICMON) circuit connects to an external power supply and monitors the current level of the power supply. The thermistor monitor (TMON) circuit monitors the temperature of a power supply to detect faults such as excessive power dissipation.The LTC2938HDE#TRPBF is a programmable device, which allows users to adjust various settings to suit the application requirements. The overvoltage, overcurrent, and undervoltage settings can be programmed to protect the power supply in case of an overvoltage, overcurrent, or undervoltage fault. The current monitor and thermistor monitor can also be programmed to provide different protection parameters such as temperature threshold, current threshold, and overcurrent delay time. The LTC2938HDE#TRPBF also offers a number of features to provide reliable operation in high-power applications. It has been designed with integrated fault protection to improve reliability and reduce the possibility of failure. It also features external power MOSFETs which allow easy implementation of Buck, Boost or Buck-Boost topologies. It is also capable of monitoring and controlling up to four internal power supply outputs.

Conclusion

The LTC2938HDE#TRPBF is an inexpensive and upgradable PMIC with comprehensive features for controlling, monitoring and protecting high current and high voltage applications. This device is especially useful for customers who are involved in design and operation of power supply systems in various applications such as automotive, industrial, and telecom. The device incorporates a voltage monitor, an overcurrent monitor, a current monitor, a thermistor monitor and integrated faults protection to provide reliable operation in high-power applications. Moreover, the device is programmable and allows users to adjust settings according to the application requirements.

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