R1218XXX1A RICOH [RICOH electronics devices division], R1218XXX1A Datasheet - Page 8

• Manufacturer Part Number: R1218XXX1A
• Description: Step-up DC/DC converter for Whilte LED Backlight
• Manufacturer: RICOH [RICOH electronics devices division]

8
1) Efficiency vs. I
2. Efficiency vs. I
R1218X
TYPICAL CHARACTERISTICS
100
100
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
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