AS1328C-BQFT-AD

Overview

The AS1328C-BQFT-AD is a high-performance buck switching regulator IC manufactured by ams-OSRAM USA INC. It delivers an adjustable positive output voltage ranging from 0.6V to 5.5V with a maximum output current of 3A. The device operates at a switching frequency of 1.5MHz and features synchronous rectification for improved efficiency. It is housed in a 16-WFQFN package with an exposed pad, designed for applications requiring compact power solutions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Adjustable positive output voltage capability
• High output current delivery up to 3A
• Integrated synchronous rectification
• Fixed 1.5MHz switching frequency

Applications

• Portable electronic devices
• Industrial control systems
• Consumer electronics power management

Procurement Notes

Verify the specific suffix BQFT-AD against official datasheets to confirm pinout and thermal pad configuration. Ensure compatibility with the required input voltage range and load conditions. Check for moisture sensitivity level (MSL) requirements during storage and handling. Confirm RoHS compliance status if restricted substances are a constraint for your assembly process.

Selection Notes

Select this component when a compact, high-efficiency step-down converter is needed for 3A loads. The fixed 1.5MHz frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance of the 16-WFQFN package and ensure adequate PCB copper area for heat dissipation given the exposed pad design.

Part Context

This part belongs to the family of buck switching regulators offered by ams-OSRAM. It is designed to replace older linear regulators or less efficient DC-DC converters in space-constrained designs. The synchronous rectification feature distinguishes it from non-synchronous counterparts, offering better performance under light and heavy load conditions.

Replacement Considerations

Direct substitutes may include other 3A synchronous buck regulators from manufacturers like Texas Instruments or Analog Devices, provided they match the 16-WFQFN footprint and electrical specifications. Verify that alternative parts support the same 0.6V to 5.5V output range and 1.5MHz switching frequency to maintain board layout integrity.