SI7540DP-T1-GE3

Overview

The Vishay Siliconix SI7540DP-T1-GE3 is a dual N- and P-channel MOSFET utilizing TrenchFET technology in a leadless PowerPAK SO-8 package. It features a 12 V drain-source voltage rating with an on-state resistance of 17 mΩ for the N-channel at VGS = 4.5 V and 32 mΩ for the P-channel at VGS = -4.5 V. The device supports continuous drain currents of 11.8 A (N-channel) and -8.9 A (P-channel). Designed for high-efficiency PWM applications, it includes optimized gate charge characteristics suitable for 500 kHz operation.

Feature Summary

• Dual configuration integrating complementary N- and P-channel MOSFETs within a single low-profile PowerPAK SO-8 package.
• TrenchFET architecture engineered to minimize on-state resistance while maintaining fast switching speeds for synchronous rectification.
• Halogen-free construction compliant with IEC 61249-2-21 standards.

Applications

• Point-of-load synchronous rectifiers for 5 V or 3.3 V bus step-down converters
• Synchronous buck converter circuits requiring shoot-through resistance
• High-frequency power management systems operating around 500 kHz

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and halogen-free status against current datasheet revisions. Validate package markings and lot codes to ensure alignment with the specified PowerPAK SO-8 form factor before integration into production assemblies.

Selection Notes

Select this component for designs requiring compact dual-channel solutions with low thermal resistance. Ensure gate drive voltages align with the specified thresholds for optimal RDS(on) performance. Evaluate thermal management requirements based on the junction-to-ambient resistance values provided in the datasheet specifications.

Part Context

This part belongs to the Vishay Siliconix Si7540DP series, representing a specific variant within their TrenchFET Power MOSFET lineup. It utilizes the PowerPAK SO-8 package, which offers a footprint compatible with standard SO-8 layouts while providing superior thermal dissipation capabilities due to its exposed drain pad design.

Replacement Considerations

Direct pin-compatible replacements within the same package family include the Si7540DP-GE3. Verify that substitute components maintain identical voltage ratings, current capacities, and thermal characteristics to ensure circuit compatibility without layout modifications.

FAQ

What is the maximum junction temperature range for the SI7540DP?

The operating junction and storage temperature range extends from -55 °C to +150 °C.

How does the PowerPAK SO-8 package improve thermal performance compared to standard SO-8?

The PowerPAK SO-8 provides a direct, low-resistance thermal path via an exposed copper drain pad, significantly reducing junction-to-ambient thermal resistance compared to traditional leaded packages.

Is the SI7540DP suitable for high-frequency switching applications?

Yes, the device is PWM optimized with gate charge parameters specifically tuned for efficient operation at frequencies up to 500 kHz.