AS1328A-BQFT-18

Overview

The AS1328A-BQFT-18 is a synchronous buck switching regulator IC manufactured by ams-OSRAM USA INC. It provides a fixed positive output voltage of 1.8V with a maximum output current capacity of 3A. The device is housed in a 16-WFQFN package featuring an exposed pad for thermal management. Designed for power management applications, it operates with an input voltage range starting from a minimum of 2.7V. The component integrates synchronous rectification to enhance efficiency and is compliant with RoHS standards.

Feature Summary

• Integrates synchronous rectification for improved conversion efficiency
• Delivers a fixed 1.8V output at up to 3A load current
• Utilizes a compact 16-pin WQFN package with exposed thermal pad

Applications

• Portable electronic devices requiring stable low-voltage power rails
• Embedded systems utilizing microcontrollers or digital logic
• Battery-powered equipment needing efficient step-down regulation

Procurement Notes

Verify the specific suffix BQFT-18 to confirm the 1.8V fixed output variant. Ensure the 16-WFQFN package footprint matches your PCB design. Confirm RoHS compliance status through official manufacturer documentation before integration. Check for moisture sensitivity levels if storage conditions are critical. Validate that the 2.7V minimum input requirement aligns with your system's supply voltage.

Selection Notes

Select this component when a fixed 1.8V rail is required with high current capability up to 3A. The synchronous design offers better efficiency compared to non-synchronous alternatives. The exposed pad package aids in heat dissipation for dense layouts. Ensure the input voltage remains above 2.7V for proper operation. Consider thermal performance under full load conditions due to the power rating.

Part Context

This part belongs to the AS1328 series of DC-DC converters from ams-OSRAM. The series includes various output voltage options such as 1.2V and 1.5V variants. These regulators are designed for space-constrained applications requiring high efficiency. The family shares similar pinouts and control interfaces, differing primarily in output voltage settings.

Replacement Considerations

Compatible substitutes include other 1.8V, 3A synchronous buck regulators in 16-WFQFN packages. Verify electrical parameters such as input voltage range and output current match exactly. Ensure thermal characteristics and pin configurations are compatible for direct replacement without PCB redesign.