AP63357QZV-7

Overview

The AP63357QZV-7 is a synchronous buck converter from Diodes Incorporated, designed for high-voltage step-down applications. It operates with an input voltage range of 3.8 V to 32 V and delivers a continuous output current of 3.5 A. The device features an adjustable output voltage ranging from 800 mV to 31 V. It integrates internal power MOSFETs and operates at a fixed switching frequency of 450 kHz. The component supports a shutdown function and functions within a temperature range of -40°C to 125°C. It is housed in a compact 13-PowerVFDFN package.

Feature Summary

• Integrated synchronous rectification with built-in high-side and low-side power MOSFETs for efficient DC-DC conversion.
• Fixed 450 kHz switching frequency enables the use of small external passive components.
• Includes comprehensive protection mechanisms such as over-current, thermal, and short-circuit protection.
• Supports automotive qualification standards for reliable operation in demanding environments.

Applications

• Automotive infotainment systems
• Telematics control units
• Body electronics modules

Procurement Notes

Verify that the specific suffix 'QZV' corresponds to the required automotive grade and package variant. Confirm RoHS compliance status through official documentation. Ensure the ordering quantity aligns with standard reel sizes if bulk procurement is intended. Cross-reference the manufacturer part number with distributor listings to avoid confusion with similar models like the AP63356 or non-Q variants.

Selection Notes

Select this component when a 3.5 A output current is required from a wide input voltage range up to 32 V. The fixed 450 kHz frequency is suitable for designs prioritizing component size over ultra-low noise. Verify that the load profile remains within the thermal limits of the DFN package. Consider the shutdown pin functionality if system power management requires active standby modes.

Part Context

This part belongs to the AP6335x series of high-voltage synchronous buck converters. It shares architectural similarities with the AP63356 but offers specific electrical characteristics tailored for higher current density. The Q-series designation typically indicates automotive-grade reliability and extended temperature performance compared to commercial variants.

Replacement Considerations

The AP63356QZV-7 is a related model within the same family. Verify if the slightly different output voltage limit or quiescent current requirements of the AP63356 meet the design specifications before substitution.