MP1517 – 3A, 25V, 1.1MHz STEP-UP CONVERTER
V
IN
3V to 4.2V
D2
1N4148 OR BAT54
8
D1
MBR320L
IN
4
15
3
9, 10
V
OUT
SW
FB
EN
OFF ON
3.3V/0.8A
SS
MP1517
16
1
C4
10nF
BP
7
C5
10nF
OLS
COMP
PGND
11, 12
R3
SGND
5, 13
C6
10nF
OPEN
C3
OPEN
MP1517_F04
Figure 4—Typical SEPIC Application Circuit
V
IN
3.3V
D2
IN4148 OR BAT54
8
D1
MBR320L
IN
4
15
3
9, 10
V
OUT
SW
FB
EN
OFF ON
5V/0.6A
L2
SS
MP1517
16
1
C4
10nF
BP
Q1
MMBT3904
7
C5
10nF
OLS
COMP
PGND
11, 12
SGND
5, 13
C3
47nF
MP1517_F05
Figure 5—3.3V to 5V @ 600mA SEPIC Application Circuit
MP1517 Rev. 1.4
9/21/2007
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