+

-

INP

INN

HYSTP

HYSTN

OUT

0.1

PF

318.4 k

:

1%

GND

V

+

LED

9.86 k

:

1%

so, if

=

As an example:

§

D

1 -

D

1 M

:

1%

1 M

:

1%

LMP7300

www.ti.com

SNOSAT7G – AUGUST 2007 – REVISED OCTOBER 2015

Typical Applications (continued)

Figure 26. Battery Voltage Monitor for 3-Cell Discharge Voltage

8.2.3.1 Design Requirements

The circuit in Figure 26 is configured to detect the low voltage threshold detection in a 3 cell, 0.9-V discharge

noninverting input voltage when the battery voltage is equal to the minimum operating voltage of the system.

Here, the very precise reference output voltage is directly connected to the noninverting input on the comparator

and sets an accurate threshold voltage. The hysteresis is set to 0-mV negative and 20-mV positive. The output is

condition.

9 Power Supply Recommendations

Even in low-frequency applications, the LMP7300 can have internal transients which are extremely quick. For

this reason, bypassing the power supply with 1-

μF to ground will provide improved performance; the supply

bypass capacitor should be placed as close as possible to the supply pin and have a solid connection to ground.

The bypass capacitors should have a low ESR.

Copyright © 2007–2015, Texas Instruments Incorporated

Submit Documentation Feedback

19

Product Folder Links: LMP7300