RT6246B
Typical Application Circuit
RT6246B
PGOOD 7
5
C
IN
10µF/50V x 2
9
C
VCC
1µF
12
R
EN
1k
6
ILMT
EN
AGND
PGND
BYP
FB
10
BOOT
VIN
LX
VCC
2
1
R
BOOT
10
C
BOOT
0.1µF
L
2.2µH
C
FF
68pF
R
FF
(Optional)
V
PGOOD
V
IN
4.5V to 18V
V
CC
V
OUT
3.3V/6A
R1
90.9k
C
OUT
22µF/6.3V x 4
R2
20k
V
ILMT
V
EN
8
4
11
C
BYP
1µF
R
BYP
(Optional)
V
BYP
Note : All the input and output capacitors are the suggested values, referring to the effective capacitances, subject to any de-
rating effect, like a DC bias.
Table 1. Suggested Component Values
V
OUT
(V)
1
1.2
1.8
2
3.3
5
R1 (k)
13.3
20
40.2
46.6
90.9
147
R2 (k)
20
20
20
20
20
20
L (H)
1
1
1.4
2.2
2.2
3.3
C
OUT
(F)
22x4/0805/6.3V
22x4/0805/6.3V
22x4/0805/6.3V
22x4/0805/6.3V
22x4/0805/6.3V
22x4/0805/6.3V
C
FF
(pF)
82
82
82
68
68
68
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS6246B-01 March 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
