mA
Copyright © 2017, Texas Instruments Incorporated
USB PWR
Hardware Description
11
SWRU457A – February 2017 – Revised August 2018
Copyright © 2017–2018, Texas Instruments Incorporated
CC3120 SimpleLink™ Wi-Fi
®
BoosterPack™ Plug-In Module and IoT
Solution
Figure 8. Feed USB on the BoosterPack Module (Always While Using the Onboard LDO)
2.5
Measure the CC3120 Current Draw
2.5.1
Low Current Measurement (Hibernate and LPDS)
To measure the current draw of the CC3120 device, and the serial flash, a jumper labeled J6 is provided
on the board. By removing J6, users can place an ammeter into this path to observe the current. TI
recommends this method for measuring the LPDS and hibernate currents that are of the order of a few
10s of micro amps.
Jumper J6 is removed, and an ammeter is added in series to measure the hibernate and LPDS currents
(see
Figure 9. Low Current Measurement
