RT9201 データシートの表示（PDF） - Richtek Technology
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RT9201 Datasheet PDF : 13 Pages
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RT9201
Typical Application Circuit
VIN
8 PVDD
LX 7
CIN 9 VDD
FB 3
RT9201
GPIO
1 EN
SS 2
5, Exposed Pad (11) GND
PGND 6
LX
CF1
CSS
CF2
RF1
VOUT
COUT
RF2
V OUT = 0.8 × R F1 + R F2
R F2
Recommended using lower ESR capacitor
Recommended component selection for typical application circuit.
VOUT
VIN
RF1
(V)
(V)
(Ω)
0.85 2.5 to 4.0
24k
CF1
(pF)
330
RF2
(Ω)
390k
CF2
(pF)
10
1.375 2.5 to 5.0 280k
33
390k
10
1.5 2.5 to 5.5 343k
22
390k
10
1.8 2.5 to 5.5 487k
15
390k
10
2.5 3.5 to 5.5 820k
10
390k
10
3.3 4.5 to 5.5 1.2M
5.6
390k
10
LX
(µH)
4.7
4.7
6.8
6.8
10
10
CSS
(pF)
330
330
470
470
680
1000
CIN
(uF)
10
COUT
(uF)
22 or (10 x 2)
10
22 or (10 x 2)
10
22 or (10 x 2)
10
22 or (10 x 2)
10
22 or (10 x 2)
10
22 or (10 x 2)
Suggested Inductors
Component
Supplier
Series
ABC
SH4018
SR0302
TDK
SLF6028
Coilcraft
DO1606
Inductance (µH) ESR (mΩ)
4.7
82
6.8
100
10
150
4.7
150
6.8
180
10
250
4.7
28
6.8
35
10
53
4.7
150
6.8
200
10
300
Current Rating (mA)
1500
1150
1000
1200
1000
800
1600
1500
1300
1100
1000
900
Dimensions (mm)
4.8x4.8x1.8
3x2.8x2.5
6x6x2.8
6.5x5.23x2
www.richtek.com
2
DS9201-12 August 2007
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