LTC3646IDE-1#PBF

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The LTC3646IDE-1#PBF is a high power monolithic synchronous buck DCDC converter designed for applications requiring a large amount of current at either 12V or 3.3V outputs. The converter can operate from an input voltage of 6V to 38V, enabling operation from either a single-cell Li-ion battery or from a multi-cell battery stack. It has an integrated low Rds(on) 40V MOSFET, enabling high efficiency at high frequencies, and is capable of delivering up to 5A output current at its 12V output, and up to 7A output current at its 3.3V output.

The LTC3646IDE-1#PBF is suitable for a wide range of applications, such as portable computer systems, consumer electronics, automotive systems, and industrial equipment. It provides excellent performance with minimum components and minimal board space. It supports PGOOD (power good) signal generation, spread spectrum frequency hopping, and adjustable switching frequency.

The LTC3646IDE-1#PBF is comprised of several key components, including a pulse width modulator (PWM) control circuit, a synchronous buck regulator, and MOSFETs. In operation, the PWM control circuit generates a switching signal based on an external reference voltage. The synchronous buck regulator then switches the voltage across the load via the MOSFETs.

The switching frequency of the synchronous buck regulator can be adjusted via an external resistor divider. This allows for adaptive frequency programming, and enables the converter to operate at its maximum efficiency across a range of load conditions. The LTC3646IDE-1#PBF also provides a PGOOD signal output, which indicates whether the output voltage is within an acceptable range.

The LTC3646IDE-1#PBF is an ideal choice for applications requiring high efficiency and low cost in a small form factor. Its wide input voltage range, high power density, and programmable switching frequency make it a versatile solution for a wide range of applications. Its integrated features also reduce system cost and complexity.

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