MP1517 – 3A, 25V, 1.1MHz STEP-UP CONVERTER
D1
MBR0540
V
IN
2.6V to 20V
8
IN
UP TO 6
9, 10
4
15
3
LEDs PER
STRING
SW
OLS
FB
EN
SS
BP
OFF ON
7
MP1517
16
1
C4
10nF
C5
10nF
COMP
PGND
11, 12
SGND
5, 13
C3
10nF
MP1517_F02
Figure 2—Driving 3 Strings of 6 White LEDs
MBR0540
V
IN
V
OUT
2.6V to 6V
8
IN
4
15
3
9, 10
7
SW
OLS
FB
SS
SS
EN
BP
OFF ON
MP1517
16
1
COMP
PGND
11, 12
Q1
NMOS
SGND
5, 13
GATE
ZXMN6A08E6TA
C3
47nF
MP1517_F03
Figure 3—Flash Circuit Driving 4 White LEDs (150mA Flash Current)
MP1517 Rev. 1.4
9/21/2007
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