Rainbow Electronics MAX17101 - Manual (Page 16)

MAX17101
Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
16 ______________________________________________________________________________________
Figure 2. Functional Diagram Overview
FB1
2V
REF
DH2
BST2
LX2
V DD
DL2
DH1
BST1
LX1
V DD
DL1
PWM1
CONTROLLER
(FIGURE 3)
PGND
FB SELECT
(PRESET vs. ADJ)
ON1
REFIN2
ON2
ILIM2
OUT2
TON
ILIM1
OUT1
POWER-GOOD
AND FAULT
PROTECTION
FAUL
T1
SKIP
5V LINEAR
REGULATOR
LDO
GND
LDO BYPASS
CIRCUITRY
ONLDO
PGOOD1
PGOOD2
V DD
UVLO
UVLO
FAUL
T2
3.3V LINEAR
REGULATOR
RTC
PAD
REF
V
DD
IN
BYP
LDOSEL
SECFB
V
CC
MAX17101
PWM2
CONTROLLER
(FIGURE 3)
FB SELECT
(PRESET vs. ADJ)
POWER-GOOD
AND FAULT
PROTECTION