+IN

-IN

LOAD

Charger

A/D

Charge

Controler

12V

+

-

Preamplifier

Output Buffer

Gain = K2

A1

A2

Gain = 10

OFFSET

Internal

Resistor

100 k:

C1

OUT

Level

shift

1

5

3

4

7

8

LMP8601, LMP8601-Q1

www.ti.com

SNOSAR2E – SEPTEMBER 2008 – REVISED MARCH 2013

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 44. 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

K2 = 2

Figure 44. Advanced Battery Charger Application

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