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Fairchild FDN372S 30V N-Channel PowerTrench SyncFET User Manual

Summary

This 30V N-Channel SyncFET integrates a MOSFET and Schottky diode for high-efficiency synchronous DC-DC converters. Designed for low Rds(on) and fast switching, it replaces discrete components in power supplies and motor drives.

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FD 372S September 2002

FDN372S 30V N-Channel Power Trench Sync FET™ General Description Features The FDN372S is designed to replace a single MOSFET

• 2.6 A, 30 V. RDS(ON) = 40 mΩ @ VGS = 10 V

and Schottky diode, used in synchronous DC-DC

RDS(ON) = 50 mΩ @ VGS = 4.5 V

power supplies, with a single integrated component. This 30V MOSFET is designed to maximize power conversion efficiency with low Rds(on) and low gate charge. The FDN372S includes an integrated Schottky • Low gate charge diode using Fairchild Semiconductor’s monolithic Sync FET process, making it ideal as the low side

• Fast switching speed

switch in a synchronous converter.

• High performance trench technology for extremely

Applications

low RDS(ON)

• DC-DC Converter • Motor Drives

Super SOT -3TM

Absolute Maximum Ratings TA=25o C unless otherwise noted Symbol Parameter Ratings Units VDSS Drain-Source Voltage 30 V VGSS Gate-Source Voltage ± 16 V ID Drain Current – Continuous (Note 1a) 2.6 A – Pulsed 10

Power Dissipation for Single Operation (Note 1a) 0.5 PD (Note 1b) 0.46

TJ, TSTG Operating and Storage Junction Temperature Range –55 to +150 °C

Thermal Characteristics RθJA Thermal Resistance, Junction-to-Ambient (Note 1a) 250 °C/W RθJC Thermal Resistance, Junction-to-Case (Note 1) 75 °C/W

Package Marking and Ordering Information Device Marking Device Reel Size Tape width Quantity 372 FDN372S 7’’ 8mm 3000 units

2002 Fairchild Semiconductor Corporation FDN372S Rev C(W)

Page Summary Contents For Fairchild FDN372S 30V N-Channel PowerTrench SyncFET User Manual

Page 1 FD 372S September 2002 FDN372S 30V N-Channel Power Trench Sync FET™ General Description Features The FDN372S is designed to replace a single MOSFET • 2.6 A, 30 V. RDS(ON) = 40 mΩ @ VGS = 10 V and Sch...
Page 2 FD 372S Electrical Characteristics TA = 25°C unless otherwise noted Symbol Parameter Test Conditions Min Typ Max Units Off Characteristics BVDSS Drain–Source Breakdown Voltage VGS = 0 V, ID = 1 m A 30...
Page 3 FD 372S Typical Characteristics S( LI ZE , D IN EN (A IN -S -R ES IS TA , D RA IN UR RE NT (A VGS = 10V 4.5V 3.5V VGS = 2.5V VDS, DRAIN TO SOURCE VOLTAGE (V) ID, DRAIN CURRENT (A) Figure 1. On-Region ...
Page 4 FD 372S Typical Characteristics r(t LI ZE FF EC TI VE , D IN EN (A S, TE -S VO LT (V TR SI EN TH ER ES IS TA f = 1 MHz ID = 2.6A VDS = 10V VGS = 0 V Qg, GATE CHARGE (n C) VDS, DRAIN TO SOURCE VOLTAGE ...

Manual Details

Brand Fairchild
Pages 5
File Size 153.38 KB
Published June 16, 2026
6 views

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Frequently Asked Questions

What is the FDN372S designed to replace in a power supply?

It replaces a single MOSFET and Schottky diode in synchronous DC-DC converters with a single integrated component.

What is the maximum continuous drain current?

The maximum continuous drain current is 2.6 A.

What is the thermal resistance from junction to ambient?

The thermal resistance from junction to ambient is 250°C/W when properly mounted.

What is the typical total gate charge?

The typical total gate charge is 5.8 nC under specified test conditions.