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IRF7821 Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # IRF7821
Description  6A, 24V, 600kHz Step-Down Converter with Synchronous Gate Driver
PDF  18 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

IRF7821 Datasheet(HTML) 7 Page - Richtek Technology Corporation

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7
DS8298-01
November 2011
www.richtek.com
RT8298
Copyright
2011 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
©
Typical Application Circuit
For WDFN-14L 4x3 Package
For SOP-8 (Exposed Pad) Package
Table 1. Recommended Component Selection
VOUT (V)
R1 (k
Ω)
R2 (k
Ω)
L (
μH)
COUT (μF)
1.2
62
127
1.5
22
μF x 3
1.8
62
50.5
1.5
22
μF x 3
2.5
62
30
2.2
22
μF x 3
3.3
62
20
2.2
22
μF x 3
5
93
18
2.8
22
μF x 3
8
120
13.5
3.6
22
μF x 3
RT8298
VIN
CIN
22µF
VIN
4.5V to 24V
VCC
R3
100k
CVCC
1µF
4, 5, 6
12
2
PGOOD
Power Good
EN/SYNC
3
1
13
11
FB
BG
SW
BOOT
8, 9, 10
CBOOT
1µF
2.2µH
L
VOUT
3.3V
COUT
22µF x 3
62k
R1
20k
R2
14, 15 (Exposed Pad)
Chip Enable
GND
Q1
RT8298
VIN
CIN
22µF
VIN
4.5V to 24V
VCC
CVCC
1µF
8
3
EN/SYNC
7
6
4
2
FB
BG
SW
BOOT
1
CBOOT
1µF
2.2µH
L
VOUT
3.3V
COUT
22µF x 3
62k
R1
20k
R2
5, 9 (Exposed Pad)
Chip Enable
GND
Q1



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