+

-

INP

INN

HYSTP

HYSTN

OUT

LMP7300

C1

2.32 k:

1%

205 k:

1%

0.1 PF

46.4 k:

1%

15.4 k:

1%

19.6 k:

1%

+

-

INP

INN

HYSTP

HYSTN

OUT

C2

2.32 k:

1%

205 k:

1%

USB POWER SOURCE

4.3V to 5.5V

0.1 PF

V

+

* NTC Thermistor

Such as: OMEGA #44008

30 k: @ 25°C

19.74 k: @ 35°C

46.67 k: @ 15°C

61.9 k:

1%

TEMPERATUE

FAULT

1 M:

1 M:

TEMPERATURE

FAULT

LMP7300

LMP7300

SNOSAT7G – AUGUST 2007 – REVISED OCTOBER 2015

www.ti.com

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The LMP7300 device may be used in a variety of applications including precision threshold detection, battery

monitoring, battery management systems, and zero crossing detectors. The externally controlled hysteresis

functionality allows the user to determine how robust the device is against noise and false triggering.

8.2 Typical Applications

8.2.1 Window Comparator

Figure 23 shows two LMP7300s configured as a micropower window detector in a temperature level detection

application.

Figure 23. Temperature-Controlled Window Detector to Monitor Ambient Temperature

16

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