RT8025 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT8025 Datasheet PDF : 13 Pages
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` Connect feedback network behind the output capacitors.
Keep the loop area small. Place the feedback
components near the RT8025.
` Connect all analog grounds to a command node and
then connect the command node to the power ground
behind the output capacitors.
RT8025
VIN
1
RT8025
VIN
LX
5
L1
4.7uH
R3
C1
VOUT
R1
3 EN
C3
4.7uF
FB 4
GND
C4
C2
R2
10uF
2
Figure 6. EVB Schematic
Recommended component selection for Typical Application
Table 1. Inductors
Component Supplier Series Inductance (μH) DCR (mΩ)
TAIYO YUDEN NR 3015
2.2
60
TAIYO YUDEN NR 3015
4.7
120
Sumida
CDRH2D14
2.2
75
Sumida
CDRH2D14
4.7
135
GOTREND
GTSD32
2.2
58
GOTREND
GTSD32
4.7
146
Current Rating (mA) Dimensions (mm)
1480
3x3x1.5
1020
3x3x1.5
1500
4.5x3.2x1.55
1000
4.5x3.2x1.55
1500
3.85x3.85x1.8
1100
3.85x3.85x1.8
Component Supplier
TDK
TDK
MURATA
MURATA
MURATA
TAIYO YUDEN
TAIYO YUDEN
TAIYO YUDEN
Table 2. Capacitors for CIN and COUT
Part No.
Capacitance (μF)
C1608JB0J475M
4.7
C2012JB0J106M
10
GRM188R60J475KE19
4.7
GRM219R60J106ME19
10
GRM219R60J106KE19
10
JMK107BJ475RA
4.7
JMK107BJ106MA
10
JMK212BJ106RD
10
Case Size
0603
0805
0603
0805
0805
0603
0603
0805
DS8025-02 March 2011
www.richtek.com
11
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