LM5009SDCX

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The LM5009SDCX is a high-performance, low-profile, synchronous buck regulator designed to deliver up to 3A of continuous output current. It is optimized for high-efficiency, low-noise, and very small solution size, making it ideal for next-generation designs. This synchronous buck regulator withstands voltages up to 28V allowing operation as both a buck and boost regulator making it perfectly suitable for applications with widely varying load demands.

Application Fields:

The LM5009SDCX is able to be used for a variety of different applications, varying from standard SMPS designs to applications such as computer peripheral supplies and battery-powered systems such as smart phones, tablets, and wearables. This IC is also well-suited for applications that require the rapid reconfiguration of the output voltage, such as those used in automotive and robotics.

Working Principle:

The LM5009SDCX works in a similar way to a regular buck regulator, but utilizes an internal power MOSFET as well as an external inductor to transfer power between the input and output. The IC also incorporates a current sense circuit which is used to monitor the load current, and a high-frequency oscillator whose frequency is programmable for optimum performance. This IC is also capable of self-supply using its power GATE output pin, which is able to provide a supply voltage for the IC itself. This means that the supply voltage can be as low as 1.62V.

The LM5009SDCX is able to provide a wide range of output voltages, from 0.2V to 28V, making it extremely versatile. The feedback and control stages are also optimized for very accurate and stable output, allowing the IC to maintain excellent line and load regulation. It also operates over a wide range of temperatures, from -40°C to 85°C.

Conclusion:

The LM5009SDCX is a high performance, low profile synchronous buck controller designed to deliver up to 3A of continuous output current. Its wide range of input and output voltages, and its low noise and power efficiency make it the ideal choice for a wide range of applications. Its ability to self-supply and its wide temperature range make it well-suited for automotive and robotics applications where load demands can vary widely.

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