PT4471A is a high-performance current-mode DC/DC step-down converter with high efficiency and wide input voltage range. It uses a new generation of control current-mode technology, pin-to-pin compatible, and allows the same circuit to achieve a variety of wide-range input and output voltage changes. This makes it ideal for applications such as automotive, industrial, telecom and medical, which must meet a wide range of input voltages and output current.

The PT4471A is a synchronous step-down DC/DC converter, which uses an internal control IC and a high-frequency switching FET to drive a small transformer and generate voltage conversion. It is also integrated with OTP (Over Temperature Protection) over-current and overload protection functions, and can achieve multiple output voltage levels, fast transient response and better regulation.

Fast Transient Response

The fast transient response of the PT4471A enables it to meet the demanding requirements of industrial applications, thereby minimizing the output voltage droop at high transient loads and maintaining the stability of the adjacent system. Specifically, during a high transient load, the spike voltage can be absorbed by the PT4471A within the same transfer cycle. In addition, the fast transfer response also ensures that the output voltage will not drop significantly under dynamic load conditions.

High Efficiency

PT4471A adopts synchronous rectification and adaptive constant oscillation technology, increases switching frequency and adopts synchronous rectifier technology, and directly boosts the efficiency. In addition, the low quiescent current design of the PT4471A further improves the power efficiency of the entire converter.

Wide Input Voltage

PT4471A has a wide input voltage range of 6V to 60V, allowing it to be used in a wide variety of applications, such as automotive, telecommunication and medical. This wide input voltage range also allows the PT4471A to adapt to the voltage level of battery supplies in various automotive and industrial applications.

Summary

PT4471A is an adjustable step-down DC/DC converter with wide input voltage range, multiple output voltage levels, fast transient response and better regulation, OTP, over-current and overload protection functions. It is ideal for applications such as automotive, industrial, telecom and medical, which must meet a wide range of input voltages and output current.