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IRF7457 Datasheet(PDF) 16 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) 16 Page - International Rectifier

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16
Rev. 2.8
05/10/04
IRU3037 / IRU3037A
www.irf.com
TYPICAL APPLICATION
1.8V to 7.5V / 0.5A Boost Converter
Figure 20 - Typical application of IRU3037 as a boost converter.
SS/SD Comp Vc
HDrv
Fb
Vcc LDrv Gnd
IRU3037
U1
R2
10K
R3
20K
Vpwr (1.5V Min)
Vc/Vcc
VOUT
(7.5V / 0.5A)
Gnd
C9
2x 47uF
D1
1N5817
L1
1uH (CoilTronics UP2B-1R0)
C1
2x 68uF
5K, 1%
1K, 1%
C8
1uF
R4
25K
R1
20K
Q2
2N2222
Q1
2N2222
C5
1uF
Q3
IRF7402
C4
0.01uF
C5
0.1uF
C10
100pF
R5
R6



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