USB Connector
TPS62237
DC-DC Converter
Isolation
Jumper Block
eZ-FET lite 5V
e
Z
-FE
T
l
it
e
3
.3
V
5V in
3.3V out
MS
P
43
0
F
5529
T
arg
e
t
5529 BoosterPack 5V
5529 BoosterPack 3.3V
MSP430F5529
Target Device
* 5V and 3V3
Isolation Block
Jumpers
Connected
e
Z
-F
ET
lite
Hardware
Note that this measurement does not include USB current, which is sourced through the 5V jumper
instead. USB current levels can vary widely, depending on whether the connection is active or suspended,
how much bus activity is happening, how long the cable is, and other factors.
If you are trying to achieve the LPM3 values shown in the F5529 data sheet and are having trouble,
download the
and see MSP430F552x_LPM3_01.c, adjusting the I/O settings for
your application.
2.4
Using an External Power Source
The F5529 LaunchPad target device can be used with a power source other than USB. However, this
should be done carefully to ensure proper system behavior. External power can be supplied by many
sources, most commonly a direct power supply, or through a battery BoosterPack.
Figure 17. Power Block Diagram for Default Configuration With USB Power Only
21
SLAU533B – September 2013 – Revised June 2014
MSP-EXP430F5529LP LaunchPad™ Development Kit User's Guide
Copyright © 2013–2014, Texas Instruments Incorporated
