LMP7300MME/NOPB National Semiconductor, LMP7300MME/NOPB Datasheet

IC AMP PREC COMP W/REF 8-MSOP

LMP7300MME/NOPB

Manufacturer Part Number
LMP7300MME/NOPB
Description
IC AMP PREC COMP W/REF 8-MSOP
Manufacturer
National Semiconductor
Series
LMP®, PowerWise®r
Type
with Voltage Referencer
Datasheet

Specifications of LMP7300MME/NOPB

Number Of Elements
1
Output Type
CMOS, Open-Collector, TTL
Voltage - Supply
2.7 V ~ 12 V, ±1.35 V ~ 6 V
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Comparator Type
Precision
No. Of Comparators
1
Response Time
4µs
Ic Output Type
CMOS, MOS, Open-Collector / Drain, TTL
Supply Current
13µA
Supply Voltage Range
2.7V To 12V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMP7300MMETR
© 2009 National Semiconductor Corporation
Micropower Precision Comparator and Precision
Reference with Adjustable Hysteresis
General Description
The LMP7300 is a combination comparator and reference
with ideal specifications for precision threshold detecting. The
precision 2.048V reference comes with a 0.25% maximum
error. The comparator features micropower (35 µW), low off-
set voltage (0.75 mV max), and independent adjustable pos-
itive and negative hysteresis.
Hysteresis control for the comparator is accomplished
through two external pins. The HYSTP pin sets the positive
hysteresis and the HYSTN pin sets the negative hysteresis.
The comparator design isolates the V
and the programmable hysteresis components. This isolation
prevents any undesirable interaction allowing the IC to main-
tain a precise threshold voltage during level detection.
The combination of low offset voltage, external hysteresis
control, and precision voltage reference provides an easy to
use micropower precision threshold detector.
The LMP7300 open collector output makes it ideal for mixed
voltage system designs. The output voltage upper rail is un-
constrained by V
mum of 12V. The LMP7300 is a member of the LMP
precision amplifier family.
Typical Application
LMP
Micropower Precision Battery Low Voltage Detector for 3
®
is a registered trademark of National Semiconductor Corporation.
CC
Cell Discharge Voltage
and can be pulled above V
IN
201756
source impedance
CC
to a maxi-
LMP7300
20175646
®
Features
(For V
Applications
Supply current
Propagation delay
Input offset voltage
CMRR
PSRR
Positive and negative hysteresis control
Adjustable hysteresis
Reference voltage
Reference voltage accuracy
Reference voltage source current
Wide supply voltage range
Operating temperature range ambient
Precision threshold detection
Battery monitoring
Battery management systems
Zero crossing detectors
S
= 5V, typical unless otherwise noted)
−40°C to 125°C
April 23, 2009
www.national.com
20175642
2.7V to 12V
1 mV/mV
0.3 mV
100 dB
100 dB
2.048V
0.25%
13 μA
1 mA
4 μs

Related parts for LMP7300MME/NOPB

LMP7300MME/NOPB Summary of contents

Page 1

... The LMP7300 is a member of the LMP precision amplifier family. Typical Application Micropower Precision Battery Low Voltage Detector for 3 Cell Discharge Voltage LMP ® registered trademark of National Semiconductor Corporation. © 2009 National Semiconductor Corporation LMP7300 Features (For V = 5V, typical unless otherwise noted) S ■ ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2)   Human Body Model   Machine Model V Differential IN Supply Voltage ( – V − Voltage at Input/Output Pins Storage Temperature Range 2 ...

Page 3

Electrical Characteristics Unless otherwise specified, all limits are guaranteed for T 10 pF. Boldface limits apply at the temperature extremes. Symbol Parameter I Supply Current S Comparator V Input Offset Voltage OS TCV Input Offset Average Drift OS I ...

Page 4

Symbol Parameter I Input Offset Current OS CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio V Output Voltage Low OL I Output Leakage Current LEAK Hysteresis Control Voltage HC LIN Linearity I Hysteresis Leakage Current HYS Propagation Delay ...

Page 5

Connection Diagram Pin Descriptions Symbol Pin Name The +IN has a common-mode voltage range from 1V above the negative rail to, and Non-Inverting including, the positive rail. Internal ESD diodes, connected from the +IN pin to the rails, +IN Comparator ...

Page 6

Typical Performance Characteristics Supply Current vs. Supply Voltage Output Low Voltage vs. Load Current Reference Voltage vs. Supply Voltage www.national.com Output Low Voltage vs. Load Current 20175639 Output Low Voltage vs. Load Current 20175633 Reference Voltage vs. Source Current 20175635 ...

Page 7

Reference Voltage vs. Sink Current Propagation Delay vs. Overdrive Voltage Propagation Delay vs. Overdrive Voltage Reference Voltage vs. Source Current 20175637 Propagation Delay vs. Overdrive Voltage 20175640 20175642 7 20175638 20175641 www.national.com ...

Page 8

Application Information GENERAL DESCRIPTION The LMP7300 is a unique combination of micropower and precision. The open collector comparator has low offset, high CMRR, high PSRR, programmable hysteresis and microamp supply current. The precision 2.048V reference provides a DAC or ADC ...

Page 9

Figure 2 shows the configuration with no hysteresis when the HYSTP and HYSTN pins are connected together to V This configuration is not recommended because it has the highest level of false triggers due to the system noise. (a) (b) ...

Page 10

Figure 4 shows the case for negative hysteresis by biasing only the HYSN pin to a voltage less than V (a) (b) FIGURE 4. Typical Configuration for Negative Hysteresis = −10 mV www.national.com The case for setting only a positive ...

Page 11

... The output is kept away from the non-invert- ing and inverting inputs, the reference and the hysteresis pins. EVALUATION BOARDS National Semiconductor provides the following PCB boards as an aid in evaluating the LMP7300 performance. amount of out of band noise is present but due to hysteresis no false triggers occur on the rising positive or falling negative edges ...

Page 12

FIGURE 7. Temperature Controlled Window Detector to Monitor Ambient Temperature PRECISION HIGH TEMPERATURE SWITCH The LMP7300 brings accuracy and stability to simple sensor switch applications. Figure 9 shows the LMP7300 setup in a high temperature switch configuration. The input bridge ...

Page 13

MICROPOWER PRECISION BATTERY LOW VOLTAGE DETECTOR The ability of the LMP7300 to operate at very low supply volt- ages, makes it an ideal choice for low battery detection ap- plication in portable equipment. The circuit in Figure 9 performs the ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 8-Pin MSOP NS Package Number MUA08A 14 ...

Page 15

Notes 15 www.national.com ...

Page 16

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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