LM2903

General-Purpose High-Voltage Open-Drain
Output Dual Comparator
1 FEATURES•

Supply Range: +3.3V to +32V•

Low Supply Current
55μA (TYP) per channel at VS = 5V•

Common-Mode Input Voltage Range
Includes Ground•

Low Output Saturation Voltage•

Open-Drain Output for Maximum Flexibility•

SPECIFIED UP TO +125°C•

Micro SIZE PACKAGES: SOIC-8(SOP8)、MSOP-82 APPLICATIONS•Hysteresis Comparators•

Factory Automation & Control•

Industrial Equipment•

Test and Measurement•

Cordless Power Tool•

Vacuum Robot•

Wireless Infrastructure

3 DESCRIPTIONSThe LM2903 is the dual comparator version, and theoutputs can be connected to other open-collector
outputs to achieve wired-AND relationships. It canoperate from 3.3V to 32V, and have low power
consuming 55µA (TYP) per channel.
The LM2903 consist of two independent voltage
comparators that are designed to operate from a single
power supply over a wide range of voltages. Quiescentcurrent is independent of the supply voltage. The device
is the most cost-effective solutions for applications
where low offset voltage, high supply voltage capability,
low supply current, and space saving are the primary
specifications in circuit design for portable consumer
products.
The LM2903 is available in Green SOIC-8, MSOP-8
packages. It operates over an ambient temperature
range of -40°C to +125°C.

Device Information (1)PART
NUMBERLM2903(1)

REV A.3

PACKAGEBODY SIZE (NOM)

SOIC-8(SOP8)

4.90mm×3.90mm

MSOP-83.00mm×3.00mm

For all available packages, see the orderable addendum at theend of the data sheet.

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LM2903
Table of Contents
1 FEATURES .......................................................................................................................................................1
2 APPLICATIONS ................................................................................................................................................1
3 DESCRIPTIONS ................................................................................................................................................1
4 Revision History ..............................................................................................................................................3
5 PACKAGE/ORDERING INFORMATION (1) ......................................................................................................4
6 Pin Configuration and Functions (Top View) ...............................................................................................5
7 SPECIFICATIONS ............................................................................................................................................6
7.1 Absolute Maximum Ratings ........................................................................................................................6
7.2 ESD Ratings................................................................................................................................................6
7.3 Recommended Operating Conditions .........................................................................................................6
7.4 Thermal Information: LM2903 .....................................................................................................................7
7.5 ELECTRICAL CHARACTERISTICS ...........................................................................................................8
7.6 TYPICAL CHARACTERISTICS ..................................................................................................................9
8 Detailed Description ..................................................................................................................................... 10
8.1 Overview .................................................................................................................................................. 10
9 Application and Implementation ................................................................................................................. 11
9.1 Application Information ............................................................................................................................ 11
9.2 Typical Application ................................................................................................................................... 11
9.3 Detailed Design Procedure ...................................................................................................................... 11
9.4 Input Voltage Range ................................................................................................................................ 11
10 Layout .......................................................................................................................................................... 1210.1 Layout Guidelines .................................................................................................................................. 1210.2 Layout Example ..................................................................................................................................... 12
11 PACKAGE OUTLINE DIMENSIONS ........................................................................................................... 13
12 TAPE AND REEL INFORMATION .............................................................................................................. 15

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LM2903
4 Revision History
Note: Page numbers for previous revisions may different from page numbers in the current version.
VERSION

Change Date

Change Item

A.0

2020/11/5

Preview version completed

A.1

2021/03/27

A.2

2022/03/09

A.3

2022/07/15

Add MSOP-8 package
1. Increase the minimum junction temperature
2. Legend added to TYPICAL CHARACTERISTICS
3. Add TAPE AND REEL INFORMATION
1. Change Supply Range: +3.3V to +32V
2. Change HBM ESD Ratings

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LM2903
5 PACKAGE/ORDERING INFORMATION (1)Orderable
DeviceLM2903XKLM2903XM-40°C ~+125°C

DeviceMarking (2)LM2903

Tape and Reel,4000-40°C ~+125°C

LM2903

Tape and Reel,4000

Package Type

Pin

ChannelOp Temp(°C)

SOIC-8(SOP8)8

2

MSOP-88

2

Package Qty

NOTE:(1) This information is the most current data available for the designated devices. This data is subject to change without notice and revisionof this document. For browser-based versions of this data sheet, refer to the right-hand navigation.
(2) There may be additional marking, which relates to the lot trace code information(data code and vendor code)，the logo or theenvironmental category on the device.

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LM2903
6 Pin Configuration and Functions (Top View)
LM2903
OUT A

1

-IN A

2

+IN A

3

V-

4

+

A
B+

8

V+

7

OUTB

6

-IN B

5

+IN B

SOIC-8(SOP8)/MSOP-8

Pin Description
PIN
NAME

I/O (1)DESCRIPTION

SOIC-8(SOP8)/MSOP-8

(1)

OUTA

1

O

Output, channel A

-INA

2

I

Inverting input, channel A

+INA

3

I

Noninverting input, channel A

V-

4

P

Negative (lowest) power supply

+INB

5

I

Noninverting input, channel B

-INB

6

I

Inverting input, channel B

OUTB

7

O

Output, channel B

V+

8

P

Positive (highest) power supply

I=Input, O=Output, P=Power

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LM29037 SPECIFICATIONS
7.1 Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted) (1)
MIN

MAX

Supply, VS=(V+) - (V-)
Voltage

Current

36

Input pin (IN+, IN-) (2)(V-)-0.3(V+) +0.3

Signal output pin (3)(V-)-0.3(V+) +0.3

Signal input pin (IN+, IN-) (2)

-10

10

mA

Signal output pin (3)

-55

55

mA

Output short-circuits (4)Junction, TJ

V

Continuous

Operating range, TA
Temperature

UNIT

(5)

Storage, Tstg

-40

125

-40

150

-65

150

°C

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.3V beyond the supply rails should
be current-limited to 10mA or less.
(3) Output terminals are diode-clamped to the power-supply rails. Output signals that can swing more than 0.3V beyond the supply rails
should be current-limited to ±55mA or less.
(4) Short-circuit from output to VCC can cause excessive heating and eventual destruction.
(5) The maximum power dissipation is a function of TJ(MAX), RθJA, and TA. The maximum allowable power dissipation at any ambient
temperature is PD = (T J(MAX) - TA) / RθJA. All numbers apply for packages soldered directly onto a PCB.

7.2 ESD Ratings
The following ESD information is provided for handling of ESD-sensitive devices in an ESD protected area only.
VALUE

V(ESD)

Electrostatic discharge

Human-Body Model (HBM), per ANSI/ESDA/JEDEC JS001, all pins (1)Charged Device Model (CDM), per JEDEC specification
JESD22-C101, all pins (2)

UNIT

±1000
V
±1000

(1) JEDEC document JEP155 states that 500 V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250 V CDM allows safe manufacturing with a standard ESD control process.

ESD SENSITIVITY CAUTION
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric changes could cause the device not to meet its publishedspecifications.

7.3 Recommended Operating Conditions
Over operating free-air temperature range (unless otherwise noted)
MIN
Supply voltage，VS= (V+) - (V-）

NOM

MAX

Single-supply

3.3

32

Dual-supply

±1.65

±16

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UNIT
V

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LM2903
7.4 Thermal Information: LM2903
LM2903
THERMAL METRIC (1)

8PINS

8PINS

SOIC-8(SOP-8)

MSOP-8UNIT

RϴJA

Junction-to-ambient thermal resistance

123.6

165

°C/W

RϴJC(top)

Junction-to-case(top) thermal resistance

70.5

53

°C/W

RϴJB

Junction-to-board thermal resistance

66.7

87

°C/W

ѰJT

Junction-to-top characterization parameter

23.5

4.9

°C/W

ѰJB

Junction-to-board characterization parameter

78.1

85

°C/W

RϴJC(bot)

Junction-to-case(bottom) thermal resistance

N/A

N/A

°C/W

(1) Thermal resistance varies with operating conditions.

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LM2903
7.5 ELECTRICAL CHARACTERISTICS(At TA = +25C, VCM=(Vs/2), VS=5V, unless otherwise noted.)
LM2903
PARAMETERCONDITIONS

UINTS
MIN

VS

Operating Voltage Range

IQ

Quiescent Current

VOS

Input offset voltage

IB

Input Bias Current

IOS

Input Offset Current

VCM

Common-Mode Voltage Range

AVD

Large signal differential voltage
amplification

VOL
IOL
IOH-LKG

TYP

3.3
VS=5V, no load
VS=32V, no load,
TA=-40C to +125C
VS=5V to 32V
VS=5V to 32V
TA=-40C to +125C
TA=25C

MAX
32

110

180
uA

150
-3.5

±0.8

-4

TA=-40C to +125C
10

TA=25C

3.5
4

10

TA=-40C to +125C

pA

100

nA

50

pA

100

nA

(V-)

(V+)-1.5(V-)(V+)-2.0

Low-Level output voltage
Output Current(sinking)VO=1.5V; VID=-1V; VS=5V

6

High-Level Output Leakage Current

200
200

mV

50

VS=3.3V to 32V
VS=3.3V to 32V
TA=-40C to +125C
VS=15V, Vo=1.4V to
11.4V
RL≥15k to (V+)
Isink≤4mA, VID=-1V

50

V

V

V/mV
300

23

mV
mA

(V+) =Vo=5V; VID=1V

80

400

nA

(V+) =Vo=32V; VID=1V

100

500

nA

Switching Characteristics
VS=5V
TPHL

Propagation Delay H To L
VS=32V

VS=5V
TPLH

Propagation Delay L To H
VS=32V

RPU=5.1KΩ, Overdrive=10mV
RPU=5.1KΩ, Overdrive=100mV
RPU=5.1KΩ, Overdrive=10mV
RPU=5.1KΩ, Overdrive=100mV
RPU=5.1KΩ, Overdrive=10mV
RPU=5.1KΩ, Overdrive=100mV
RPU=5.1KΩ, Overdrive=10mV
RPU=5.1KΩ, Overdrive=100mV

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2.5
0.5
1.8
0.7
us
4.1
1.6
3.1
1.4

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LM2903
7.6 TYPICAL CHARACTERISTICS
NOTE: The graphs and tables provided following this note are a statistical summary based on a limited number of samples
and are provided for informational purposes only.
At TA = +25C, VS=5V, RPULLUP=5.1k, VCM = Vs/2, CL=15pF, unless otherwise noted.
4

10
VS=5V

3.5

8

3

7

Time(us)2.5

Time(us)

VS=5V

9

2
1.5

6
5
4
3

1

2

0.5

1

0

0
0

10 20 30 40 50 60 70 80 90 100

0Overdrive(mV)Figure 1. Response Time vs Input Overdrives
Negative Transition

10 20 30 40 50 60 70 80 90 100

Overdrive(mV)Figure 2. Response Time vs Input Overdrives
Positive Transition
63

VS=32V

2.5

5

2

4

Time(us)

Time(us)

VS=32V

1.5
1
0.5

2
1

0

0
0

10 20 30 40 50 60 70 80 90 100

0Overdrive(mV)Figure 3. Response Time vs Input Overdrives
Negative Transition

10 20 30 40 50 60 70 80 90 100

Overdrive(mV)Figure 4. Response Time vs Input Overdrives
Positive Transition
3.5

3.5
VS=5V

2.5
2.0

1.5
1.0
25℃
125℃
-40℃

0.5

0.0
0

5

VS=32V

3.0

Saturation Voltage(V)3.0

Saturation Voltage(V)

3

10

15

20

25

Output Sinking Current(mA)

2.0
1.5
1.0
25℃
125℃
-40℃

0.5
0.0

0

30

Figure 5. Saturation Voltage vs Output Sink
Current

2.5

5

10

15

20

25

Output Sinking Current(mA)

30

Figure 6. Saturation Voltage vs Output Sink
Current
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LM2903
8 Detailed Description
8.1 Overview
The LM2903 family of comparators can operate up to 32V on the supply pin. This standard device has provenubiquity and versatility across a wide range of applications. This is due to its low power and high speed. The
open-drain output allows the user to configure the output's logic low voltage (VOL) and can be utilized to enable
the comparator to be used in AND functionality.

V+

IN+

IN-

+

OUT

VFigure 7. Functional Block Diagram

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LM2903
9 Application and Implementation
Information in the following applications sections is not part of the RUNIC component specification, and RUNIC
does not warrant its accuracy or completeness. RUNIC’s customers are responsible for determining suitabilityof components for their purposes. Customers should validate and test their design implementation to confirm
system functionality.

9.1 Application Information
LM2903 is typically used to compare a single signal to a reference or two signals against each other. Many
users take advantage of the open drain output (logic high with pull-up) to drive the comparison logic output to alogic voltage level to an MCU or logic device. The wide supply range and high voltage capability makes thiscomparator optimal for level shifting to a higher or lower voltage.

9.2 Typical Application
VLOGICVLOGIC
VSUP
VIN

+

VSUP
RPULLUP

VIN+½ LM2903

Vref

RPULLUP+½ LM2903

CL

VIN-

CL

Figure 8. Single-Ended and Differential Comparator Configurations

9.3 Detailed Design Procedure
When using the device in a general comparator application, determine the following:• Input Voltage Range• Minimum Overdrive Voltage• Output and Drive Current• Response Time

9.4 Input Voltage Range
When choosing the input voltage range, the input common mode voltage range (VICR) must be taken in toaccount. If temperature operation is below 25°C the VICR can range from 0 V to V CC– 2.0 V. This limits the input
voltage range to as high as VCC– 2.0 V and as low as 0 V. Operation outside of this range can yield incorrectcomparisons.

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LM2903
10 Layout10.1 Layout Guidelines
For accurate comparator applications without hysteresis, it is important maintain a stable power supply withminimized noise and glitches. To achieve this, it is best to add a bypass capacitor between the supply voltage
and ground. This should be implemented on the positive power supply and negative supply (if available). If a
negative supply is not being used, do not put a capacitor between the IC's GND pin and system ground.
Minimize coupling between outputs and inverting inputs to prevent output oscillations. Do not run output andinverting input traces in parallel unless there is a VCC or GND trace between output and inverting input traces
to reduce coupling. When series resistance is added to inputs, place resistor close to the device.

10.2 Layout Example
GroundBetter

0.1μF
Input Resistors
Close to device

1 1OUTVCC 8

2 1IN-

2OUT 7VCC
OK

VCC or GND

Ground3 1IN+

2IN- 6

4 GND

2IN+ 5Figure 9. LM2903 Layout Example

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LM2903
11 PACKAGE OUTLINE DIMENSIONSSOIC-8(SOP8)

b

e

5.2
E

E1

2.2
D

1.27

0.6

RECOMMENDED LAND PATTERN (Unit: mm)

A2

c

A

A1

L

Dimensions In MillimetersθDimensions In Inches

Symbol
Min

Max

Min

Max

A

1.350

1.750

0.053

0.069

A1

0.100

0.250

0.004

0.010

A2

1.350

1.550

0.053

0.061

b

0.330

0.510

0.013

0.020

c

0.170

0.250

0.007

0.010

D

4.800

5.000

0.189

0.197

e

1.270(BSC)

0.050(BSC)

E

5.800

6.200

0.228

0.244

E1

3.800

4.000

0.150

0.157

L

0.400

1.270

0.016

0.050

θ

0°

8°

0°

8°

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LM2903
MSOP-8

b

e

E

E1

4.8
1.02

D

0.65

0.41

RECOMMENDED LAND PATTERN (Unit: mm)

A2

c

A
A1

L

Dimensions In MillimetersθDimensions In Inches

Symbol
Min

Max

Min

Max

A

0.820

1.100

0.032

0.043

A1

0.020

0.150

0.001

0.006

A2

0.750

0.950

0.030

0.037

b

0.250

0.380

0.010

0.015

c

0.090

0.230

0.004

0.009

D

2.900

3.100

0.114

0.122

e

0.650(BSC)

0.026(BSC)

E

2.900

3.100

0.114

0.122

E1

4.750

5.050

0.187

0.199

L

0.400

0.800

0.016

0.031

θ

0°

6°

0°

6°

NOTE:
A. All linear dimension is in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion. Mold flash and protrusion shall not exceed 0.15 per side.
D. BSC: Basic Dimension. Theoretically exact value shown without tolerances.

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LM290312 TAPE AND REEL INFORMATIONREEL DIMENSIONSTAPE DIMENSION

Reel
DiameterReel Width(W1)

DIRECTION OF FEEDNOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF TAPE AND REEL
Package Type

Reel
Diameter

SOIC-8(SOP8)

13’’

Reel
Width
(mm)
12.4

MSOP-8

13’’

12.4

A0
(mm)

B0
(mm)

K0
(mm)

P0
(mm)

P1
(mm)

P2
(mm)

W
(mm)

Pin1
Quadrant

6.40

5.40

2.10

4.0

8.0

2.0

12.0

Q1

5.20

3.30

1.50

4.0

8.0

2.0

12.0

Q1

NOTE:
1. All dimensions are nominal.
2. Plastic or metal protrusions of 0.15mm maximum per side are not included.

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LM2903
IMPORTANT NOTICE AND DISCLAIMER
Jiangsu RUNIC Technology Co., Ltd. will accurately and reliably provide technical and reliability data (including
data sheets), design resources (including reference designs), application or other design advice, WEB tools,
safety information and other resources, without warranty of any defect, and will not make any express or implied
warranty, including but not limited to the warranty of merchantability Implied warranty that it is suitable for a
specific purpose or does not infringe the intellectual property rights of any third party.
These resources are intended for skilled developers designing with RUNIC products You will be solely
responsible for: (1) Selecting the appropriate products for your application; (2) Designing, validating and testing
your application; (3) Ensuring your application meets applicable standards and any other safety, security orother requirements; (4) RUNIC and the RUNIC logo are registered trademarks of RUNIC INCORPORATED. All
trademarks are the property of their respective owners; (5) For change details, review the revision history
included in any revised document. The resources are subject to change without notice. Our company will not
be liable for the use of this product and the infringement of patents or third-party intellectual property rights due
to its use.

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