Manual
MAX17101
Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
______________________________________________________________________________________ 29
Figure 5. Standard Output Application Circuit—Chipset Supply
BYP
DH2
BST2
5V SYSTEM SUPPLY
INPUT (V
IN
)*
7V TO 24V
1.5V OUTPUT
DL2
LX2
PGND
POWER-GOOD
}
PGOOD1
N
L1
N
L2
N
H1
N
H2
C
BST1
0.1μF
C
BST2
0.1μF
DH1
BST1
DL1
LX1
ON1
ON2
OFFON
PGOOD2
R7
100kΩ
R6
100kΩ
L1
C
OUT1
C
OUT2
ILIM1
OUT1
FB1
L2
ILIM2
OUT2
ONLDO
IN
V
DD
V
CC
PAD
1.05V OUTPUT
3.3V SMPS SUPPLY
SECFB
TON
X
OUT1/OUT2 SWITCHING FREQUENCY
OPEN (REF): 400kHz/300kHz
C1
4.7μF
C2
1.0μF
3.3 SMPS SUPPLY
C5
1μF
R
ILIM1
R
ILIM2
C
IN
2x 10μF 25V
SKIP
POWER GROUND
ANALOG GROUND
MAX17101
LDO
3.3V LDO OUTPUT
C6
4.7μF
C22
0.1μF
REFIN2
R10
47Ω
LDOSEL
RTC
C3
1μF
REF
C4
0.1μF
RTC SUPPLY
PLACE C22 BETWEEN IN AND PGND AS
CLOSE TO THE MAX17101 AS POSSIBLE.
AGND
RGND
0Ω