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IRF7457 Datasheet(PDF) 2 Page - International Rectifier

Part # IRF7457
Description  8-PIN SYNCHRONOUS PWM CONTROLLER
PDF  21 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRF7457 Datasheet(HTML) 2 Page - International Rectifier

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Rev. 2.8
05/10/04
IRU3037 / IRU3037A
www.irf.com
ABSOLUTE MAXIMUM RATINGS
Vcc Supply Voltage ..................................................
25V
Vc Supply Voltage ......................................................
30V (not rated for inductive load)
Storage Temperature Range ......................................
-65°C To 150°C
Operating Junction Temperature Range .....................
0°C To 125°C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device.
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
Reference Voltage
Fb Voltage
Fb Voltage Line Regulation
UVLO
UVLO Threshold - Vcc
UVLO Hysteresis - Vcc
UVLO Threshold - Vc
UVLO Hysteresis - Vc
UVLO Threshold - Fb
UVLO Hysteresis - Fb
Supply Current
Vcc Dynamic Supply Current
Vc Dynamic Supply Current
Vcc Static Supply Current
Vc Static Supply Current
Soft-Start Section
Charge Current
IRU3037
IRU3037A
5<Vcc<12
Supply Ramping Up
Supply Ramping Up
Fb Ramping Down (IRU3037)
(IRU3037A)
Freq=200KHz, CL=1500pF
Freq=200KHz, CL=1500pF
SS=0V
SS=0V
SS=0V
1.225
0.784
4.0
3.1
0.4
0.3
2
2
1
0.5
-10
1.250
0.800
0.2
4.2
0.25
3.3
0.2
0.6
0.4
0.1
5
7
3.3
1
-20
1.275
0.816
0.35
4.4
3.5
0.8
0.5
8
10
6
4.5
-30
V
%
V
V
V
V
V
V
mA
mA
mA
mA
mA
VFB
LREG
UVLO Vcc
UVLO Vc
UVLO Fb
Dyn Icc
Dyn Ic
ICCQ
ICQ
SSIB
θJA=160°C/W
θJA=124°C/W
Fb
Vcc
LDrv
Gnd
HDrv
Vc
Comp
SS/SD
4
3
2
1
5
6
7
8
Fb
Vcc
LDrv
Gnd
SS/SD
Comp
Vc
HDrv
4
3
2
1
5
6
7
8
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Vcc=5V, Vc=12V and TA=0 to 70°C. Typical values refer
to TA=25°C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient
temperature.
PACKAGE INFORMATION
8-PIN PLASTIC TSSOP (F)
8-PIN PLASTIC SOIC (S)



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