LT3757IDD#PBF

LT3757IDD#PBF application field and working principle

The LT3757IDD#PBF converter is a high-performance high-efficiency synchronous buck converter that combines switching and power conversion in one package. It features spread spectrum frequency hopping and load line transient response phase-shifting to reduce system-wide electromagnetic interference (EMI). The LT3757IDD#PBF also offers to dynamically adjust and optimize the phase count to maximize efficiency, minimize noise and reduce input and output ripple. It includes all the necessary components for a complete switching regulator topology, such as integrators, comparators, temperature and fault sensing, current limit sensing and soft start. The LT3757IDD#PBF also offers adjustable current limit and short circuit protection.

The LT3757IDD#PBF converter gives system designers the best of both worlds. It is designed to provide a regulated output voltage from a single supply and is also designed to optimize efficiency, noise and ripple even in most extreme operating conditions. The integrated circuitry gives designers the flexibility to set the switching frequency, input voltage and current limit for a wide range of applications. The onboard soft start, temperature protection and current limit sensing also ensure that the system can be safely operated without impacting the system performance.

The LT3757IDD#PBF converter features multiple feedback and control options. It can be operated in fixed frequency or current-mode control, and offers a wide selection of output voltage and current programming options. The PLL-based spread spectrum frequency hopping can be enabled to minimize EMI. The stand-by, burst mode, and low-power operation modes of the LT3757IDD#PBF converter can also be enabled to further reduce RFI.

In addition to its extensive features, the LT3757IDD#PBF converter uses an integrated MOSFET driver to reduce the system’s size, cost and complexity. Its high efficiency and wide input voltage range help drive down the cost of operation, while its integrated protection features and fault timers ensure reliable operation even in the most extreme applications. The LT3757IDD#PBF converter is available in a 16-lead TSSOP package and is a great choice for high-performance, high-efficiency, low-cost switching converter designs.