LTC4365IDDB#TRMPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Overvoltage, Undervoltage Protection
Current - Supply:	125µA
Voltage - Supply:	2.5 V ~ 34 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-DFN (3x2)
Base Part Number:	LTC4365

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Introduction

LTC4365IDDB#TRMPBF is a dedicated power management integrated circuit (PMIC) which is specialized in automotive, computing, industrial, and communication applications. It is a single-chip solution that offers over voltage protection and inrush current limiting. With integrated load switch, current sense amplifier, power enabling signal control, and temperature monitoring, LTC4365IDDB#TRMPBF eliminates the need for additional components. The device provides accurate over-compensation for supply voltage and inrush current limiting, but also features an On/Off signal control for activation according to user-defined conditions.

Features and Benefits

The main benefit of using LTC4365IDDB#TRMPBF is increased system reliability, safety and protection from short-term over-voltage surges and inrush currents. The single-chip PMIC solution reduces total system cost and complexity by incorporating all the necessary components for power management into one chip. The integrated load switch and current sense amplifier enable detection of transient over-voltage and tripping/close of power supply lines according to user-defined conditions. It also offers additional features like adjustable slow-start inrush current limit, undervoltage and power-enable signal control, thermal monitoring to meet user-defined thresholds, and wide over-voltage protection range which can be set via external resistors. It also offers low-power start up, short-circuit protection, and input/output ESD protection.

Applications

LTC4365IDDB#TRMPBF can be used for various applications like automotive and industrial power management, board-level power supply and distribution, power control of DC motors, charging batteries, and DC/DC converter. In automotive applications, it can be used for in-cabin electronics control, such as air-conditioning control systems, communications systems, and driver information systems. In industrial applications, it can be used to control power supplies, provide power protection, and to detect over-voltage conditions.

Working Principle

LTC4365IDDB#TRMPBF works by monitoring the input voltage and current flow and responding accordingly according to user-defined conditions. Once the input voltage reaches the user-defined threshold, the device triggers an internal control signal to enable/disable the output power. When the over-voltage protection is enabled, the device senses if the input voltage reaches the user-defined threshold and activates an internal timer. The timer can be adjusted via an external resistor, and it sets the time for the output power to be shut off or for the load switch to be tripped. If the over-voltage continues for longer than the set time, the power is shut off and the load switch is tripped.For inrush current limiting, the device will automatically limit and control the current flowing into the system. When the input voltage reaches the user-defined level, the device triggers and turns on a series of internal load switches. The load switches will gradually limit the inrush current to a user-defined level and shut off the power supply if the input voltage is exceeded.The device also provides an integrated current sense amplifier which allows for instantaneous monitoring of the current drawn and enabling user-defined conditions in order to protect the components. The integrated load switch and current sense amplifier enables detection of transient over-voltage and tripping/close of power supply lines according to user-defined conditions.

Conclusion

LTC4365IDDB#TRMPBF is a highly advanced and reliable PMIC which is specialized for automotive, computing, industrial, and communication applications. It features a wide range of features and benefits like integrated load switch and current sense amplifier, adjustable slow-start inrush current limiting, and wide over-voltage protection that eliminates the need for additional components. The device can be used for applications such as automotive and industrial power management, board-level power supply and distribution, power control of DC motors, charging batteries, and DC/DC converter. Its working principle involves monitoring the input voltage and current flow and responding accordingly according to user-defined conditions in order to protect components and increase system reliability and safety.

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