RT8003
Typical Application Circuit
V
IN
2.4V to 4.2V
C
IN
1uF
5
EN
2
VDD
LX
RT8003
1
L
OUT
2.2uH
R1
10k
R2
7.15k
Chip Enable
V
OUT
1.2V/600mA
C
OUT
1uF
7
C
COMP
10nF
6
COMP
FB
GND
8, 9, 10,
Exposed Pad (11)
Recommended component selection for Typical Application Circuit.
V
OUT
(V)
0.5
1
1.2
1.8
2.5
3.3
V
IN
(V)
2.4 to 3.3
2.4 to 3.6
2.4 to 4.2
2.4 to 5.5
3.3 to 5.5
4.2 to 5.5
C
IN
(µF)
1
1
1
1
1
1
C
OUT
(µF)
1/2.2
1/2.2
1/2.2
1/2.2
1/2.2
1/2.2
L
OUT
(µH)
2.2/1
2.2/1
2.2/1
2.2/1
2.2/1
2.2/1
R1 (kΩ)
10
10
10
10
10
10
R2 (kΩ)
Open
10
7.15
3.83
2.49
1.78
C
COMP
(nF)
10
10
10
10
10
10
Suggested Inductors
Component
Supplier
ABC
Sumida
TDK
SR0302
CDRH2D14
VLP4612
Series
Inductance
(µH)
1
2.2
2.2
1
2.5
ESR
(mΩ)
60
90
94
110
170
Current Rating
(mA)
2100
1650
1000
1500
1100
Dimensions
(mm)
3x2.8x2.5
3.2x3.2x1.55
4.6x3.4x1.2
Suggested Capacitors For C
IN
and C
OUT
Component Supplier
TDK
Panasonic
TAIYO YUDEN
Part No.
C1608X5R1A105M
C1608X5R1A225M
ECJ1VB0J105M
ECJ1VB0J225M
JMK107BJ105M
JMK107BJ225M
Capacitance (uF)
1
2.2
1
2.2
1
2.2
Case Size
0603
0603
0603
0603
0603
0603
www.richtek.com
2
DS8003-08 March 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
