+

-

INP

INN

HYSTP

HYSTN

OUT

0.1 PF

318.4 k:

1%

GND

V

+

9.86 k:

1%

1 M:

1%

1 M:

1%

LED

ADJUST

FOR LED

BRIGHTNESS

0

20

40

60

80

100

0

5

10

15

20

25

30

OVERDRIVE VOLTAGE (mV)

-40°C

25°C

85°C

125°C

V

+

= 12V

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LMP7300

SNOSAT7G – AUGUST 2007 – REVISED OCTOBER 2015

LMP7300 Micropower Precision Comparator and Precision Reference

With Adjustable Hysteresis

1 Features

3 Description

The LMP7300 is a combination comparator and

1

•

reference

with

ideal

specifications

for

precision

•

Supply Current 13

μA

threshold detecting. The precision 2.048-V reference

•

Propagation Delay 4

μs

comes with a 0.25% maximum error. The comparator

features micropower (35 µW), low offset voltage

•

Input Offset Voltage 0.3 mV

(0.75-mV maximum), and independent adjustable

•

CMRR 100 dB

positive and negative hysteresis.

•

PSRR 100 dB

Hysteresis control for the comparator is accomplished

•

Positive and Negative Hysteresis Control

through two external pins. The HYSTP pin sets the

•

Adjustable Hysteresis 1 mV/mV

positive hysteresis, and the HYSTN pin sets the

negative hysteresis. The comparator design isolates

•

Reference Voltage 2.048 V

•

Reference Voltage Accuracy 0.25%

hysteresis components. This isolation prevents any

•

Reference Voltage Source Current 1 mA

undesirable interaction allowing the IC to maintain a

•

Wide Supply Voltage Range 2.7 V to 12 V

precise threshold voltage during level detection.

•

Operating Temperature Range Ambient

−40°C to

The combination of low offset voltage, external

125°C

hysteresis control, and precision voltage reference

provides

an

easy-to-use

micropower

precision

2 Applications

threshold detector.

•

Precision Threshold Detection

The LMP7300 open collector output is ideal for

mixed-voltage system designs. The output voltage

•

Battery Monitoring

•

Battery Management Systems

•

Zero Crossing Detectors

member of the LMP precision amplifier family.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

VSSOP (8)

3.00 mm × 3.00 mm

LMP7300

SOIC (8)

3.91 mm × 4.90 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application

Propagation Delay vs Overdrive Voltage

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.