Z-World RabbitCore RCM3200 User Manual - page 41
User’s Manual
37
Table B-1 lists the electrical, mechanical, and environmental specifications for the Proto-
typing Board.
B.2 Power Supply
The RCM3200 requires a regulated 3.3 V ± 0.15 V DC power source to operate. Depend-
ing 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 Shottky diode at D2
as shown in Figure B-2.
Figure B-2. Prototyping Board Power Supply
Table B-1. Prototyping Board Specifications
Parameter
Specification
Board Size
5.25" × 6.75" × 1.00" (133 mm × 171 mm × 25 mm)
Operating Temperature
–40°C to +70°C
Humidity
5% to 95%, noncondensing
Input Voltage
8 V to 24 V DC
Maximum Current Draw
(including user-added circuits)
800 mA max. for +3.3 V supply,
1 A total +3.3 V and +5 V combined
Prototyping Area
2.0" × 3.5" (50 mm × 90 mm) throughhole, 0.1" spacing,
additional space for SMT components
Standoffs/Spacers
5, accept 4-40 × 3/8 screws
LINEAR POWER
REGULATOR
POWER
IN
J9/J11
10 µF
LM1117
U1
+RAW
+3.3 V
3
1
2
1
2
3
DL4003
D2
47 µF
340 µF
+5 V
L1
C17
330 µH
D1
1N5819
SWITCHING POWER REGULATOR
DCIN
U5
LM2575