AON7538

Single FETs, MOSFETs Overview

The AON7538 is a single N-channel MOSFET manufactured by Alpha & Omega Semiconductor using Trench Power AlphaMOS LV technology. It features a 30V drain-source voltage rating and supports continuous drain currents of 23A at ambient temperature and 30A at case temperature. The device offers very low on-resistance at 4.5V gate drive, with power dissipation rated at 4.2W (Ta) and 24W (Tc). It utilizes an 8-DFN-EP (3x3mm) surface-mount package designed for high current capability and low gate charge applications.

Single FETs, MOSFETs Feature Summary

• Utilizes latest Trench Power AlphaMOS LV technology for enhanced performance
• Provides very low RDS(on) specifically optimized for 4.5V VGS operation
• Designed with low gate charge characteristics to improve switching efficiency
• Supports high current capability within a compact surface-mount footprint

Single FETs, MOSFETs Applications

• DC-DC converter circuits requiring efficient step-down regulation
• Power management systems in portable electronic devices
• Battery protection and load switch applications
• Low voltage synchronous rectification modules

Single FETs, MOSFETs Procurement Notes

Verify the active status of this component carefully as public distributor records indicate it may be obsolete or no longer manufactured. Confirm availability through official Alpha & Omega Semiconductor channels or authorized partners before design finalization. Ensure substitute components are qualified for thermal and electrical equivalence if discontinuation is confirmed.

Single FETs, MOSFETs Selection Notes

Select this component for designs prioritizing low conduction losses at 4.5V logic levels. The 8-DFN-EP package provides robust thermal dissipation for its size. Evaluate thermal resistance requirements against the 4.2W (Ta) limit in your specific PCB layout. Consider the low gate charge for high-frequency switching applications where driver loss is critical.

Single FETs, MOSFETs Part Context

This part belongs to Alpha & Omega Semiconductor's AON75xx series of N-channel MOSFETs. These devices typically employ advanced trench gate technology to achieve superior figure-of-merit values compared to standard planar MOSFETs. The series targets mobile and consumer electronics markets demanding high power density and efficiency in small form factors.

Single FETs, MOSFETs Replacement Considerations

Public sources list the AON7538 as obsolete. Verify direct substitutes such as the AON7534 or AON7380 from the same manufacturer, ensuring pin compatibility and electrical ratings match your design requirements. Cross-reference datasheets for RDS(on) and thermal characteristics.