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| RT7252A Datasheet, PDF (2/14 Pages) Richtek Technology Corporation – 2A, 17V, 340/800kHz Synchronous Step-Down Converter | |||
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RT7252A/B
Typical Application Circuit
VIN
4V to 17V
CIN
10µF
PGOOD
Chip Enable
RT7252A
2 VIN
BOOT 3
6 PGOOD
4 EN
SW 1
FB 5
7, 9 (Exposed Pad) GND
CBOOT
10nF
L
15µH
R1
110k
R2
36k
VOUT
3.3V
COUT
22µF x 2
VIN
4V to 17V
CIN
10µF
PGOOD
Chip Enable
RT7252B
2 VIN
BOOT 3
6 PGOOD
4 EN
SW 1
FB 5
7, 9 (Exposed Pad) GND
CBOOT
10nF
L
6.8µH
R1
47k
R2
15k
VOUT
3.3V
COUT
22µF x 2
Table 1. Recommended Component Selection
RT7252A
VOUT (V) L (μH) R1 (kΩ) R2 (kΩ) COUT (μF)
1.2
4.7
110
220
22 x 2
2.5
10
110
51
22 x 2
3.3
15
110
36
22 x 2
5
22
120
22
22 x 2
RT7252B
VOUT (V)
1.2
2.5
3.3
5
L (μH)
3.6
4.7
6.8
10
R1 (kΩ) R2 (kΩ) COUT (μF)
47
91
22 x 2
47
22
22 x 2
47
15
22 x 2
62
12
22 x 2
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS7252A/B-01 April 2012
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