MAX15026_12 Datasheet, PDF (19/23 Pages) Maxim Integrated Products – Low-Cost, Small, 4.5V to 28V Wide Operating Range, DC-DC Synchronous Buck Controller

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