LOAD

Charger

C1

+IN

-IN

+

-

Preamplifier

Output Buffer

Gain = K2

A1

A2

Gain = 10

OFFSET

Internal

Resistor

100 k:

OUT

Level

shift

1

5

3

4

7

8

LMP8601, LMP8601Q

www.ti.com

SNOSAR2D – SEPTEMBER 2008 – REVISED OCTOBER 2009

K2 = 2

Figure 13. Battery Current Monitor Application

ADVANCED BATTERY CHARGER APPLICATION

The above circuit can be used to realize an advanced battery charger that has the capability to monitor the exact

net current that flows in and out the battery as show in Figure 14. The output signal of the LMP8601/LMP8601Q

is digitized with the A/D converter and used as an input for the charge controller. The Charge controller can me

used to regulate the charger circuit to deliver exactly the current that is required by the load, avoiding

overcharging a fully loaded battery

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