MP1498 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
TYPICAL APPLICATION CIRCUITS
R3
20
2
7
1
6
5
3
VIN
BST
SW
IN
C1
C1A
25V
C4
25V
L1
MP1498
GND
GND
C6
VOUT
5V /2A
VCC
VCC
SS
C2
GND
C5
GND
SS
GND
C3
15pF
R4
100K
R1
40.2K
R5
24K
GND
GND
8
EN/SYNC
FB
EN/SYNC
GND
GND
R2
7.68K
GND
Figure 7: VIN=12V, 5V/2A Output
R3
20
2
7
1
6
5
3
VIN
VCC
BST
SW
IN
C1
25V
GND
C1A
25V
C4
L1
MP1498
GND
VOUT
3.3V /2A
VCC
SS
C6
C2
GND
C5
GND
SS
GND
C3
15pF
R4
100K
R1
40.2K
R5
24K
GND
GND
8
EN/SYNC
FB
EN/SYNC
GND
GND
R2
13K
GND
Figure 8: VIN=12V, 3.3V/2A Output
R3
20
2
7
1
6
5
3
VIN
VCC
SS
BST
SW
IN
C1
25V
GND
C1A
25V
GND
C4
L1
MP1498
VOUT
2.5V /2A
VCC
SS
C6
C2
GND
C5
GND
GND
C3
15pF
R4
100K
R1
40.2K
R5
43K
GND
GND
8
EN/SYNC
FB
EN/SYNC
GND
GND
R2
19.1K
GND
Figure 9: VIN=12V, 2.5V/2A Output
MP1498 Rev. 1.01
12/18/2012
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