LT3973EDD#PBF

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PMIC - Voltage Regulators - DC DC Switching Regulators is the application field of LT3973EDD#PBF. This is a integrated switch mode current regulator IC from Linear Technology so that it can provide current up to 4A which is ideal for applications like portable equipment, distributed power systems, personal computers, and sub-systems. This device can be used to implement a complete isolated dc to dc converter, as it integrates a RCC switch mode current regulator and an isolated controller, power MOSFETs and current sense function in a single package. It is ideal for applications such as notebook batteries, laptop computers, industrial power systems, distributed power systems and so on.

The operating principle of LT3973EDD#PBF is mainly based on the RCC switch mode current regulator. It runs control loops for both output current and output voltage in continuous current mode and voltage mode respectively. for output voltage control a voltage or current mode ramp generator is used to generate a target current or voltage depending upon the mode. The difference between the actual output voltage and the target voltage is the input to the voltage error amplifier, whose output voltage is then used to adjust the peak output current of RCC converter. At the same time, an output current sense line monitors the output current, and is fed back to the current loop, making sure that the desired output current is maintained.

Also, the LT3973EDD#PBF integrates an isolated controller and an isolated power MOSFETs along with an output current sense so that it can be used as a single package isolated dc to dc converter. Its data sheet provides a detailed information about circuit implementation and design to allow for maximum performance.Also a wide range of features like accurate current, wide operating temperature and input voltage range, differential current sense, voltage mode control and built-in protection features make it suitable for many power regulation applications.

All in all, LT3973EDD#PBF is a well designed switch mode current regulator IC suitable for many applications because of its wide operation temperature range and high output current capability. It provides a complete solution for regulating both output current and voltage in a single package and thus is ideal for use in portable equipment, distributed power systems, personal computers, laptop computers and other related applications.

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