MAX15118 Datasheet, PDF (22/23 Pages) Maxim Integrated Products – High-Efficiency, 18A, Current-Mode Synchronous Step-Down Regulator with Integrated Switches

MAX15118
High-Efficiency, 18A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Typical Operating Circuits (continued)
PGOOD
VEN < 0.4V = OFF
1.4V < VEN < VIN = ON
CONNECT SKIP TO EN TO ENABLE SKIP MODE
CONNECT SKIP TO GND FOR PWM MODE
VIN
2.7V TO 5.5V
R5
100kI
C4
C3
C2
22µF
22µF
22µF
2.2µF
R12
10I
C1
C19
C30
22µF
10µF
10µF
C16
0.1µF
470I
R3
C14
3.83kI
22pF
±1%
C15
3.3nF
S
S
D6
EN
C6
SKIP
A6
PGOOD
D4
AIN
A5
IN
B5
IN
C5
IN
U1
MAX15118
D5
IN
B6
N.C.
C7
SS/REFIN
D7
COMP
R7
A1 ^4.7I
BST
A2
LX
A3
LX
A4
LX
B2
LX
B4
LX
C2
LX
C4
LX
B1
GND
B3
GND
C1
GND
C3
GND
D1
GND
D2
GND
D3
GND
A7
GSNS
B7
FB
S ^{SMALL-SIGNAL GND (SGND)}
CONNECT TO PGND ONLY ON COMPONENT LAYER AT VIA NEXT TO U1.
C13
0.47µF
R8
1I
C18
4700pF
S
L1
0.22µH
C7
150µF
C8
150µF
C9
150µF
C10
150µF
C20 ^VOUT
10µF ^1.5V
0 TO 18A
R
R2
5.36kI
±1%
R
R1
8.06kI
±1%
R ^{REMOTE SENSE GND (RGND)}
CONNECT TO PGND ONLY AT THE LOAD.
POWER GND (PGND)
TOP LAYER GND FLOOD, SYSTEM GND.
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