NXP Semiconductors
JN5189
JN5189-DK006 Development Kit User Guide
UM11368
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© NXP Semiconductors N.V. 2020. All rights reserved.
User Guide
Rev.1.1
— 28 April 2020
15 of 21
(JN5189
current = measured voltage / 3.3Ω). As an example, if the measured voltage is
10mV, then 10e-
3 / 3.3Ω = 3.03mA. Note that the input current to the MAX9634 used in
the on-board current measurement will be included in the voltage measured across this
resistor.
7.3 Current measurement with a multimeter
Figure 10 is the circuit for the power supply to the module. The signal VBAT is used to
power the JN5189 module
Figure 10 Power Sensing Circuit
This signal goes to the module (JM1.17) and the expansion connector (J3.31)
