AP65355FN-7

Overview

The AP65355FN-7 is a high-voltage adaptive constant-on-time (COT) step-down DC/DC converter manufactured by Diodes Incorporated. It operates with an input voltage range of 4.5 V to 18 V and delivers a maximum output current of 3 A. The device features an adjustable output voltage from 760 mV to 6 V and switches at a frequency of 650 kHz. Key electrical specifications include a typical static current of 550 uA and a shutdown supply current of 600 uA. It is housed in a UDFN3030-10 surface-mount package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Integrates adaptive constant-on-time control for stable performance across varying load and line conditions
• Supports high input voltages up to 18 V for flexible power system designs
• Includes integrated power switch and protection features such as thermal shutdown

Applications

• Industrial equipment power distribution
• Consumer electronics adapter circuits
• Infotainment systems in automotive applications

Procurement Notes

Verify component authenticity through authorized Diodes Incorporated distributors or certified partners. Confirm the specific suffix FN-7 matches project requirements for packaging and tape-and-reel specifications. Check RoHS compliance documentation for regulatory adherence. Note that availability status may vary; verify current stock levels directly with suppliers before finalizing procurement plans.

Selection Notes

Select this component when designing buck converters requiring high input voltage tolerance and moderate output current. Ensure the UDFN3030-10 package fits the PCB layout constraints. Verify that the 650 kHz switching frequency aligns with EMI requirements and inductor selection criteria. Consider the thermal performance within the specified operating temperature range during board design.

Part Context

This part belongs to the AP65355 series of high-voltage synchronous buck converters. It is designed for applications needing efficient power conversion from higher voltage rails. The series offers compact solutions for space-constrained designs while maintaining high efficiency and robust protection mechanisms against over-current and thermal stress.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.