MAX17101 Datasheet, PDF (15/31 Pages) Maxim Integrated Products – Dual Quick-PWM, Step-Down Controller with Low-Power LDO, RTC Regulator

Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
PLACE C22 BETWEEN IN AND PGND AS
CLOSE TO THE MAX17101 AS POSSIBLE.
L1
5V OUTPUT
C_OUT1
D1
C22
0.1μF
N_H1
C_BST1
0.1μF
N_L1
12V TO 15V
CHARGE
PUMP
C8
0.1μF
C6
0.1μF
D_X1
C5
10nF
C7
10nF
R4
500kΩ
D_X2
R5
100kΩ
IN
DH2
BST2
DH1
BST1
LX2
LX1
DL2
DL1
PGND
OUT1
BYP
AGND
OUT2
N_H2
C_BST2
0.1μF
N_L2
RGND
0Ω
MAX17101
PGOOD1
PGOOD2
RTC
R6
100kΩ
C3
1μF
SECFB
C4
0.1μF
REF
FB1
SKIP
C_IN
4 x 10μF 25V
INPUT (V_IN)*
7V TO 24V
L2
D2
3.3V OUTPUT
C_OUT2
R7
100kΩ
5V SMPS OUTPUT (OUT1)
} ^POWER-GOOD
RTC SUPPLY
5V LDO OUTPUT
POWER GROUND
ANALOG GROUND
R1
47Ω
C2
1.0μF
*LOWER INPUT VOLTAGES REQUIRE
ADDITIONAL INPUT CAPACITANCE. IF
OPERATING NEAR DROPOUT, COMPONENT
SELECTION MUST BE CAREFULLY DONE TO
ENSURE PROPER OPERATION.
C1
4.7μF
LDOSEL
V_DD
LDO
ON1
ON2
ONLDO
R_ILIM1
V_CC
TON
REFIN2
ILIM1
ILIM2
PAD
Figure 1. Standard Application Circuit—Main Supply
ON OFF
X
OUT1/OUT2 SWITCHING FREQUENCY
OPEN (REF): 400kHz/300kHz
R_ILIM2
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