MP1470 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
TYPICAL APPLICATION CIRCUITS
R4
0R
3
5
3
5
6
2
4
IN
EN
IN
BST
VIN
C6
C1
C4
SW
GND
25V
25V
L1
GND
GND
MP1470
GND
5V/2A
VOUT
C2A
SW
C3
R3
NS
R7
75k
C2
NS
R5
NS
R1
40.2k
100k
GND
GND
FB
EN
GND
R2
7.68k
R6
NS
C5
NS
GND
GND
GND
GND
GND
Figure 9: 12Vin, 5V/2A
R4
6
BST
VIN
C6
C1
0R
C4
GND
25V
25V
L1
GND
GND
SW
MP1470
GND
3.3V/2A
VOUT
2
4
SW
FB
C3
R3
C2
NS
C2A
R5
NS
R7
75k
NS
R1
40.2k
100k
GND
GND
EN
EN
GND
R2
13k
R6
NS
C5
NS
GND
GND
GND
GND
GND
Figure 10: 12Vin, 3.3V/2A
R4
3
6
IN
BST
VIN
C6
C1
0R
C4
GND
25V
25V
L1
GND
GND
SW
MP1470
GND
2.5V/2A
VOUT
2
4
SW
C3
R3
NS
R7
100k
C2
NS
C2A
R5
NS
R1
40.2k
100k
GND
GND
5
EN
FB
EN
GND
R2
19.1k
R6
NS
C5
NS
GND
GND
GND
GND
GND
Figure 11: 12Vin, 2.5V/2A
MP1470 Rev. 1.02
8/27/2013
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