Datasheet

MAX1652–MAX1655
High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
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MAX1652
MAX1653
MAX1654
MAX1655
1V
CSL
CSH
REF
GND
4V
FB
ADJ FB
5V FB
3.3V FB
SYNC
LPF
12kHz
PWM
COMPARATOR
OUT
V+
BATTERY VOLTAGE
4.5V
VL
TO
CSL
+5V AT 5mA
BST
DH
LX
DL
PGND
SECFB
MAIN
OUTPUT
AUXILIARY
OUTPUT
SHDN
PWM
LOGIC
SHDN
SS
ON/OFF
+2.50V
AT 100µA
+5V LINEAR
REGULATOR
+2.50V
REF
Figure 2. MAX1652–MAX1655 Functional Diagram