The FDS698S is a dual N-Channel PowerTrench® MOSFET from Fairchild Semiconductor (now ON Semiconductor), designed for synchronous rectification and other high-efficiency power conversion applications.

Applications:

• Synchronous rectification in DC-DC converters
• Power management in portable devices
• Battery chargers
• Load switching

Features:

• Dual N-Channel MOSFETs in a single package
• Low on-resistance (RDS(on)) for high efficiency
• Logic-level gate drive
• Small footprint SO-8 package
• RoHS compliant

Benefits:

• Increased power efficiency in DC-DC converters due to synchronous rectification.
• Reduced component count and board space requirements.
• Simplified gate drive circuitry, compatible with low-voltage logic.
• Improved thermal performance.

Specifications:

The FDS698S features a drain-source voltage (VDS) of 30V and a continuous drain current (ID) of 7A per channel. The on-resistance (RDS(on)) is typically 0.020Ω at VGS = 10V and 0.028Ω at VGS = 4.5V. The device is packaged in an SO-8 package. The gate threshold voltage is typically 2V.

This dual MOSFET is ideal for synchronous rectification, which can significantly improve the efficiency of DC-DC converters. By replacing the traditional diode rectifier with a MOSFET switch, conduction losses are reduced, resulting in higher efficiency and lower heat generation. The logic-level gate drive simplifies the design process, while the small package size saves valuable board space.