LMR33630CDDA

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The LMR33630CDDA is a 3A DC/DC switching regulator which uses a topology typical of switch-mode regulators and provides efficient energy conversion in a cost-effective package. It features wide input voltage range and can operate with input voltages as high as 36V. The LMR33630CDDA is ideal for point-of-load applications and is capable of providing power to multiple loads in distributed power architectures.

The LMR33630CDDA is a high-efficiency switching regulator that integrates high-performance current-mode control and adjustable output voltage. It also includes over-temperature and over-current protection through the on-board thermal shutdown and current limiting circuitry. This IC is also equipped with under-voltage lockout (UVLO) for reliable operation, which detects input voltage and prevents the IC from turning on until the input reaches its specified minimum.

The LMR33630CDDA features adjustable output voltage levels. This is done through the on-chip VID and terminates with ON/OFF control. The ON/OFF control is able to switch between on and off states with a logic-level voltage range of 0V to 5.5V. With a VID input of 0.8V, the IC can achieve an output voltage as low as 0.8V. The output voltage can be set with a single resistor divider.

The Working Principle of the LMR33630CDDA: The IC utilizes an integrated high-side switch, complete with current sense and voltage sense, to prevent the output from consuming excessive current during cycling. This regulator also employs internal current-mode switching for a fast transient response and improved output current accuracy. The high-side switch also helps prevent excessive current flow during start-up and possible damage to the IC.

The LMR33630CDDA is typically used for applications like microprocessor core power supplies, DSPs, memory modules, microcontrollers and other general purpose power applications. It works well in distributed power applications, where each channel can be independently regulated and isolated from the rest. It is suitable for spot-welding equipment and analytical instrumentation as well.

In conclusion, the LMR33630CDDA is a capable DC/DC switching regulator with features such as wide input voltage range, adjustable output voltage and over-temperature and over-current protection. It is suited for a variety of applications such as microprocessor core power supplies, distributed power architectures and general purpose power applications.

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