R1218X Ricoh Corporation, R1218X Datasheet - Page 8

• Manufacturer Part Number: R1218X
• Description: Step Up DC/DC Converter
• Manufacturer: Ricoh Corporation

www.DataSheet4U.com
DataSheet
8
R1218X
1) Efficiency vs. I
2. Efficiency vs. I
TYPICAL CHARACTERISTICS
4
100
100
U
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
.com
0
0
0
0
0
4
4
R1218X021A
4
LED
LED
LED Current I
LED Current I
LED Current I
R1218X031A
R1218X021A
( 2LED) L:LQH32CN220 Topt=25 C
(3LED) L: LQH32CN220, Topt=25 C
8
8
8
LED
LED
LED
12
12
12
(mA)
(mA)
(mA)
16
16
16
V
V
V
IN
IN
IN
=2.7V
=1.8V
=4.2V
20
20
20
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
0
R1218X021A
4
4
LED Current I
LED Current I
R1218X031A
8
8
LED
LED
12
12
(mA)
(mA)
16
16
V
V
IN
IN
=3.6V
=3.6V
20
20