LR7821 Datasheet (International Rectifier)

LR7821, IRLR7821

PD - 94538B www.datasheet4u.com HEXFET Power MOSFET Applications l High Frequency Synchronous Buck Converters for Computer Processor Power l High Frequency Isolated DC-DC Converters with Synchronous Rectification for Telecom and Industrial Use Benefits l Very Low RDS(on) at 4.5V VGS l Ultra-Low Gate Impedance l Fully Characterized Avalanche Voltage and Current IRLR7821 IRLU7821 ® Qg 10nC VDSS RDS(on) max 30V 10m: D-Pak IRLR7821 I-Pak IRLU7821 Absolute Maximum Ratings Parameter VDS VGS ID @

LR7821 Features

* + (Qrr × Vin × f )  2 

* dissipated primarily in Q1. Ploss = (Irms 2 × Rds(on ) )  Qgd +I × × Vin × ig  + (Qg × Vg × f ) +  Qoss × Vin × f   2     Qgs 2 f +  I × × Vin × f  ig    This simplified loss equation includes the terms Qgs2 and Qoss which are new to Power MOSFET data