MAX15112 Datasheet, PDF (22/23 Pages) Maxim Integrated Products – High-Efficiency, 12A, Current-Mode Synchronous Step-Down Regulator with Integrated Switches

MAX15112
High-Efficiency, 12A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Typical Operating Circuits (continued)
PGOOD
EN < 0.4V = OFF
1.4V < EN < VIN = ON
CONNECT SKIP TO EN TO ENABLE SKIP MODE
CONNECT SKIP TO GND FOR PWM MODE
R5
100kI
VIN
2.7V TO 5.5V
C3
22µF
2.2µF
R12
10I
C2
C1
C19
22µF
22µF
10µF
C16
0.033µF
470I
R3
C14
22pF
5.23kI
±1%
C15
3300pF
D5
EN
C5
SKIP
A5
PGOOD
D3
AIN
B4
IN
D4
IN
C4
IN
B5
N.C.
U1
MAX15112
C6
SS/REFIN
D6
COMP
R7
A4 ^4.7I
BST
A3
LX
A2
LX
C3
LX
C2
LX
B3
LX
B2
LX
D2
GND
D1
GND
A1
GND
C1
GND
B1
GND
A6
GSNS
S
S
B6
FB
SMALL-SIGNAL GND (SGND)
S 20-MIL TRACE ON THE BOTTOM THAT CONNECTS TO PGND ONLY ON
COMPONENT LAYER AT VIA NEXT TO U1.
REMOTE SENSE GND (RGND)
R TRACE TO REMOTE SENSE THE GND VOLTAGE AT THE LOAD.
CONNECT TO PGND ONLY AT THE LOAD.
POWER GND (PGND)
TOP LAYER GND FLOOD, SYSTEM GND.
C13
0.47µF
R8
1I
C18
1500pF
S
L1
0.22µH
C7
C8
C9
C10
C20 ^VOUT
47µF
47µF
47µF
47µF
10µF ^1.5V
0 TO 12A
R
R2
2.21kI
±1%
R
R1
3.32kI
±1%
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