100

0.247

1.729

700

1200

2.964

CHARGE CURRENT (mA)

LP3923

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SNVS567B – APRIL 2010 – REVISED MAY 2013

IMON CHARGING CURRENT MONITOR

Charging current is monitored within the charger section and a proportional voltage representation of the

charging current is presented at the IMON output pin. The output voltage relationship to the actual charging

current is represented in the following graph and by the equation:

VIMON(mV) = (2.47 x ICHG(mA))

(1)

Figure 4.

Note that this function is not available if there is no input at CHG_IN or if the charger is off due to the input at

CHG_IN being less than the compliance voltage.

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