20-101-1051 Datasheet, PDF (93/165 Pages) List of Unclassifed Manufacturers – C-Programmable Core Module with NAND Flash Mass Storage and Ethernet

B.3 Power Supply
The RCM3365/RCM3375 requires a regulated 3.15 V to 3.45 V DC power source to oper-
ate. Depending on the amount of current required by the application, different regulators
can be used to supply this voltage.
The Prototyping Board has an onboard +5 V switching power regulator from which a
+3.3 V linear regulator draws its supply. Thus both +5 V and +3.3 V are available on the
Prototyping Board.
The Prototyping Board itself is protected against reverse polarity by a diode at D1 as
shown in Figure B-3.
J4
1
2
3
D1 _DCIN
DL4003
SWITCHING POWER REGULATOR
C1
47 µF
U1
LM2575
330 µH
L1
D2
1N5819
LINEAR POWER
+5 V
REGULATOR _{+3.3 V}
LM1117
3 U4 2
330 µF
10 µF
1
10 µF
Figure B-3. Prototyping Board Power Supply
User’s Manual
87