Owner manual

MAX1864/MAX1865
xDSL/Cable Modem Triple/Quintuple Output
Power Supplies
12 ______________________________________________________________________________________
∑
BIAS
OK
V
REF
1.114V
THERMAL
SHDN
3.5V
IN
VL LDO
5V
VL
BST
DH
LX
DL
GND
100kΩ
400kΩ
ILIM
0.9
✕
VL
POK
ENABLE
250mV
A
V
= 5
500mV
FB5*
B5*
*MAX1865 ONLY
OUT
0.9V
REF
FB1
0.9V
REF
B_
FB_
100mV
FB
OUT
COMP
FB1
SOFT-
START
V
REF
1.236V
CLK
SLOPE
COMP
A
V
= 5
ENABLE
MAX1864
MAX1865
Figure 2. Functional Diagram