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IRF6611PBF Datasheet, PDF (1/10 Pages) International Rectifier – DirectFET Power MOSFET
PD - 97216
IRF6611PbF
IRF6611TRPbF
l RoHs Compliant 
l Lead-Free (Qualified up to 260°C Reflow)
l Application Specific MOSFETs
l Ideal for CPU Core DC-DC Converters
l Low Conduction Losses
l High Cdv/dt Immunity
l Low Profile (<0.7mm)
l Dual Sided Cooling Compatible 
l Compatible with existing Surface Mount Techniques 
DirectFET™ Power MOSFET ‚
Typical values (unless otherwise specified)
VDSS
VGS
RDS(on)
RDS(on)
30V max ±20V max 2.0mΩ@ 10V 2.6mΩ@ 4.5V
Qg tot Qgd Qgs2
Qrr
Qoss Vgs(th)
37nC 12nC 3.3nC 16nC 23nC 1.7V
MX
Applicable DirectFET Outline and Substrate Outline (see p.7,8 for details)
DirectFET™ ISOMETRIC
SQ
SX
ST
MQ
MX
MT
Description
The IRF6611PbF combines the latest HEXFET® Power MOSFET Silicon technology with the advanced DirectFETTM packaging to achieve the
lowest on-state resistance in a package that has the footprint of a SO-8 and only 0.7 mm profile. The DirectFET package is compatible with
existing layout geometries used in power applications, PCB assembly equipment and vapor phase, infra-red or convection soldering tech-
niques. Application note AN-1035 is followed regarding the manufacturing methods and processes. The DirectFET package allows dual sided
cooling to maximize thermal transfer in power systems, improving previous best thermal resistance by 80%.
The IRF6611PbF balances industry leading on-state resistance while minimizing gate charge along with ultra low package inductance to
reduce both conduction and switching losses. The reduced losses make this product ideal for high frequency/high efficiency DC-DC convert-
ers that power high current loads such as the latest generation of microprocessors. The IRF6611PbF has been optimized for parameters that
are critical in synchronous buck converter’s SyncFET sockets.
Absolute Maximum Ratings
Parameter
VDS
Drain-to-Source Voltage
VGS
ID @ TA = 25°C
ID @ TA = 70°C
ID @ TC = 25°C
IDM
EAS
IAR
Gate-to-Source Voltage
e Continuous Drain Current, VGS @ 10V
e Continuous Drain Current, VGS @ 10V
f Continuous Drain Current, VGS @ 10V
g Pulsed Drain Current
h Single Pulse Avalanche Energy
Ãg Avalanche Current
Max.
30
±20
32
26
150
220
310
22
Units
V
A
mJ
A
20
6.0
15
ID = 27A
5.0 ID= 22A
4.0
VDS= 24V
VDS= 15V
10
3.0
5
TJ = 125°C
TJ = 25°C
0
0 1 2 3 4 5 6 7 8 9 10
VGS, Gate -to -Source Voltage (V)
Fig 1. Typical On-Resistance vs. Gate Voltage
Notes:
 Click on this section to link to the appropriate technical paper.
‚ Click on this section to link to the DirectFET Website.
ƒ Surface mounted on 1 in. square Cu board, steady state.
www.irf.com
2.0
1.0
0.0
0
10
20
30
40
50
QG Total Gate Charge (nC)
Fig 2. Typical On-Resistance vs. Gate Voltage
„ TC measured with thermocouple mounted to top (Drain) of part.
… Repetitive rating; pulse width limited by max. junction temperature.
† Starting TJ = 25°C, L = 0.91mH, RG = 25Ω, IAS = 22A.
1
05/29/06