RT8070ZSP 查看數據表（PDF） - Richtek Technology
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RT8070ZSP Datasheet PDF : 12 Pages
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RT8070
Pin Configurations
COMP
SS
EN
VIN
8
2
7
GND
3
6
9
4
5
PGOOD
FB
RT
LX
SOP-8 (Exposed Pad)
(TOP VIEW)
COMP 1
SS 2
EN 3
VIN 4
8 PGOOD
7 FB
6 RT
9 5 LX
WDFN-8L 3x3
Typical Application Circuit
VIN
2.7V to 5.5V
PGOOD
R3
100k
Chip Enable
CIN
10µF
ROSC
4
RT8070
VIN
LX 5
8 PGOOD FB 7
6 RT
COMP 1
L
RCOMP
3 EN
GND 9 (Exposed Pad)
SS 2
CSS
10nF
R1
R2
CCOMP
VOUT
COUT
VOUT (V)
3.3
2.5
1.8
1.5
1.2
1
Table 1. Recommended Components Selection for fSW = 1MHz
R1 (kΩ)
75
R2 (kΩ)
24
RCOMP (kΩ)
33
CCOMP (pF)
560
L (μH)
2
51
24
22
560
2
30
24
15
560
1.5
21
24
13
560
1.5
12
24
11
560
1.5
6
24
8.2
560
1.5
COUT (μF)
22
22
22
22
22
22
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS8070-07 November 2012
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