RT6251A/B
Typical Application Circuit
RT6251A/B
V
IN
4.5V to 18V
6
C
IN
4, 5
10
PVIN
EN
LX
11, 12
VIN
BOOT
13
C
BOOT
0.1µF
L
R1
V
OUT
Enable
PGOOD
R
OSC
100k
C
SS
10nF
FB
COMP
7
8
R
COMP1
R2
C
COMP2
2, 3,
15 (Exposed Pad)
C
COMP1
14 PGOOD
1
RT/SYNC
C
OUT
9 SS/TR
GND
Table 1. Suggested Component Values
V
OUT
(V)
5
3.3
2.5
1.8
1.5
1.2
1
R1 (k)
126
75
51
30
21
12
6
R2 (k)
24
24
24
24
24
24
24
R
COMP1
(k)
5.23
3.48
2.67
1.91
1.6
1.27
1
C
COMP1
(nF)
15
15
15
15
15
15
15
C
COMP2
(pF)
180
180
180
180
180
180
180
C
OUT
(F)
44
44
44
44
44
44
44
L (H)
6.8
4.7
4.7
3.6
3.6
2.2
2.2
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6251A/B-00 November 2015
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
