Instruction Manual

MAX15026
Low-Cost, Small, 4.5V to 28V Wide Operating
Range, DC-DC Synchronous Buck Controller
______________________________________________________________________________________ 19
Typical Application Circuits
R5
10kΩ
R3
4.02kΩ
R1
11.8kΩ
DH
LX
Q2
L1
1.4µH
BST
DL
ENABLE
PGOOD
V
IN
DRV
GND
RT
IN
V
CC
PGOOD
LIM
EN
COMP
FB
R7
4.02kΩ
R6
15.4kΩ
R4
27kΩ
R1*
*R1 IS A SMALL-VALUE RESISTOR TO DECOUPLE
SWITCHING TRANSIENTS CAUSED BY THE
MOSFET DRIVER (2.2Ω).
C6
2.2µF
C2
4.7µF
C1
330µF
PANASONIC
EEEFCIE331P
4.5V TO 28V
C10
4.7µF
C7
68pF
C9
0.022µF
C8
68pF
C11
1500pF
C4
470µF
SANYO
4C54701
C5
22µF
C3
0.47µF
Q1 ( )
V
OUT
COILCRAFT
MSS1278-142ML
MAX15026
ON-SEMICONDUCTOR
NTMFS4835NTIG
( )
ON-SEMICONDUCTOR
NTMFS4835NTIG
Single 4.5V to 28V Supply Operation
Figure 5 shows an application circuit for a single 4.5V to 28V power-supply operation.
Figure 5. V
IN
= 4.5V to 28V