RT5779A/B
Typical Application Circuit
L
0.47µH
V
3
7
2
V
IN
OUT
VIN
LX
FB
2.5V to 6V
1.2V/5A
C
22µF
IN
C
44µF
R
OUT
PGOOD
100k
R1
RT5779A/B
20k
1
8
PGOOD
Enable
PGOOD
EN
R2
20k
5
VOUT
PGND
4
AGND
6
Table 1. Suggested Component Values
R1 (k)
13.3
20
R2 (k)
20
L (H)
0.33
0.47
0.47
0.47
0.47
VOUT (V)
1
COUT (F)
44
44
44
44
44
1.2
20
1.8
40.2
63.4
90.9
20
2.5
20
3.3
20
Note : All the input and output capacitances are the suggested values, which refer to the effective capacitances, and are subject
to any de-rating effect, like a DC bias.
Copyright 2017 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS5779A/B-00 October 2017
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
