101-0360 Rabbit Semiconductor, 101-0360 Datasheet - Page 61
101-0360
Manufacturer Part Number
101-0360
Description
KIT DEV RABBIT 2000 INT'L
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 2000r
Type
MPU Moduler
Datasheet
1.20-101-0383.pdf
(80 pages)
Specifications of 101-0360
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
For Use With/related Products
RCM2000, RCM2010, RCM2020
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
101-360
101-360
101-360
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B.3 Power Supply
The RCM2000 requires a regulated 5 V ± 0.25 V DC power source to operate. 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 LM340-T5 or equivalent. The LM340-T5 is an
inexpensive linear regulator that is easy to use. Its major drawback is its inefficiency,
which is directly proportional to the voltage drop across it. The voltage drop creates heat
and wastes power.
A switching power supply may be used in applications where better efficiency is desir-
able. The LM2575 is an example of an easy-to-use switcher. This part greatly reduces the
heat dissipation of the regulator. The drawback in using a switcher is the increased cost.
The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2
as shown in Figure B-3.
Figure B-3. Prototyping Board Power Supply
Capacitor C1 provides surge current protection for the voltage regulator, and allows the
external power supply to be located some distance away.
User’s Manual
57
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