R1218XXX1A RICOH [RICOH electronics devices division], R1218XXX1A Datasheet - Page 9
R1218XXX1A
Manufacturer Part Number
R1218XXX1A
Description
Step-up DC/DC converter for Whilte LED Backlight
Manufacturer
RICOH [RICOH electronics devices division]
Datasheet
1.R1218XXX1A.pdf
(14 pages)
- Current page: 9 of 14
- Download datasheet (327Kb)
3. Efficiency vs. ILED (4 LED ) L: LQH32CN220, Topt=25 C
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
R1218X031A
4
4
4
LED Current I
LED Current I
R1218X041A
LED 電流 I
R1218X041A
8
8
8
LED
LED
LED
12
12
(mA)
12
(mA)
(mA)
16
16
16
V
V
V
IN
IN
IN
=4.2V
=2.7V
=4.2V
20
20
20
100
90
80
70
60
50
40
30
20
10
0
0
4
LED Current I
R1218X041A
8
LED
12
(mA)
16
V
IN
=3.6V
R1218X
20
9
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