RT7250A/B
Typical Application Circuit
RT7250A
V
IN
4V to 17V
2 VIN
C
IN
10µF
6 PGOOD
4 EN
GND
SW 1
FB 5
R2
36k
BOOT 3
C
BOOT
10nF
L
15µH
PGOOD
Chip Enable
R1
110k
V
OUT
3.3V
7, 9 (Exposed Pad)
C
OUT
22µF x 2
RT7250B
V
IN
4V to 17V
2 VIN
C
IN
10µF
6 PGOOD
4 EN
GND
SW 1
FB 5
R2
15k
BOOT 3
C
BOOT
10nF
L
6.8µH
R1
47k
PGOOD
Chip Enable
V
OUT
3.3V
7, 9 (Exposed Pad)
C
OUT
22µF x 2
Table 1. Recommended Component Selection
RT7250A
V
OUT
(V)
1.2
2.5
3.3
5
L (H)
4.7
10
15
22
R1 (k)
110
110
110
120
R2 (k)
220
51
36
22
C
OUT
(F)
22 x 2
22 x 2
22 x 2
22 x 2
RT7250B
V
OUT
(V)
1.2
2.5
3.3
5
L (H)
3.6
4.7
6.8
10
R1 (k)
47
47
47
62
R2 (k)
91
22
15
12
C
OUT
(F)
22 x 2
22 x 2
22 x 2
22 x 2
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS7250A/B-03 June 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
