LM4040AEM3-2.5+ - Maxim Integrated

General Description

The LM4040 is a precision, two-terminal shunt mode,

bandgap voltage reference available in fixed reverse-

breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V,

4.096V, and 5.000V. Ideal for space-critical applications,

the LM4040 is offered in the subminiature 3-pin SC70

surface-mount package (1.8mm x 1.8mm), 50% smaller

than comparable devices in SOT23 surface-mount

packages (SOT23 versions are also available).

Laser-trimmed resistors ensure precise initial accuracy.

With a 100ppm/°C temperature coefficient, the device

is offered in four grades of initial accuracy ranging from

0.1% to 1%. The LM4040 has a 60μA to 15mA shunt

current capability with low dynamic impedance, ensuring

stable reverse breakdown voltage accuracy over a wide

range of operating temperatures and currents.

The LM4040 does not require an external stabilizing

capacitor while ensuring stability with any capacitive load.

The LM4040 is guaranteed over the temperature range of

-40°C to +125°C.

For a 1.225V output version, refer to the LM4041 data sheet.

Applications

●Portable, Battery-Powered Equipment

●Notebook Computers

●Cell Phones

●Industrial Process Controls

Benets and Features

●Ultra-Small 3-Pin SC70 Package

● 0.1% (max) Initial Accuracy

●100ppm/°C (max) Temperature Coefficient

Guaranteed Over -40°C to +125°C Temperature

Range

● Wide Operating Current Range: 60μA to 15mA

● Low 28μVRMS Output Noise (10Hz to 10kHz)

●2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V

Fixed Reverse-Breakdown Voltages

●No Output Capacitors Required

●Tolerates Capacitive Loads

● AEC-Q100 Qualified—LM4040BIM3-2.5/V+T,

LM4040AEM3-3.0/V+T , LM4040AEX3-3.0/V+T,

LM4040CEM3-5.0/V+T

Ordering Information appears at end of data sheet.

19-1787; Rev 10; 10/17

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

Reverse Current (cathode to anode)..................................20mA

Forward Current (anode to cathode) ..................................10mA

Continuous Power Dissipation (TA = +70°C)

3-Pin SC70 (derate 2.17mW/°C above +70°C) ...........174mW

3-Pin SOT23 (derate 4.01mW/°C above +70°C) ........320mW

Operating Temperature Range

LM4040_I_ _ _................................................ -40°C to +85°C

LM4040_E_ _ _ ............................................ -40°C to +125°C

Storage Temperature Range ............................ -65°C to +150°C

Junction Temperature ...................................................... +150°C

Lead Temperature (soldering, 10s) ................................. +300°C

Soldering Temperature (reflow) ....................................... +260°C

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 2.046 2.048 2.050

LM4040B (0.2%) 2.044 2.048 2.052

LM4040C (0.5%) 2.038 2.048 2.058

LM4040D (1.0%) 2.028 2.048 2.068

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±2.0 ±15

LM4040B ±4.0 ±17

LM4040C ±10 ±23

LM4040D ±20 ±41

Minimum Operating Current IRMIN

LM4040A/B/C 45 65 µA

LM4040D 45 70

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±20

ppm/°CIR = 1mA LM4040A/B/C ±15 ±100

LM4040D ±15 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.3 1.0

LM4040D 0.3 1.2

1mA ≤ IR ≤ 15mA LM4040A/B/C 2.5 8.0

LM4040D 2.5 10.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B 0.3 0.8

ΩLM4040C 0.3 0.9

LM4040D 0.3 1.1

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 28 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these

or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability.

Electrical Characteristics—2.048V

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 2.4975 2.5000 2.5025

LM4040B (0.2%) 2.4950 2.5000 2.5050

LM4040C (0.5%) 2.4875 2.5000 2.5125

LM4040D (1.0%) 2.4750 2.5000 2.5250

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±2.0 ±19

LM4040B ±4.0 ±21

LM4040C ±10 ±29

LM4040D ±20 ±49

Minimum Operating Current IRMIN

LM4040A/B/C 45 65 µA

LM4040D 45 70

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±20

ppm/°CIR = 1mA LM4040A/B/C ±15 ±100

LM4040D ±15 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.3 1.0

LM4040D 0.4 1.2

1mA ≤ IR ≤ 15mA LM4040A/B/C 2.5 8.0

LM4040D 2.5 10.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B 0.3 0.8

ΩLM4040C 0.3 0.9

LM4040D 0.3 1.1

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 35 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Electrical Characteristics—2.500V

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 2.997 3.000 3.003

LM4040B (0.2%) 2.994 3.000 3.006

LM4040C (0.5%) 2.985 3.000 3.015

LM4040D (1.0%) 2.970 3.000 3.030

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±3.0 ±22

LM4040B ±6.0 ±26

LM4040C ±15 ±34

LM4040D ±30 ±59

Minimum Operating Current IRMIN

LM4040A/B/C 45 67 µA

LM4040D 45 70

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±20

ppm/°CIR = 1mA LM4040A/B/C ±15 ±100

LM4040D ±15 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.3 1.0

LM4040D 0.3 1.2

1mA ≤ IR ≤ 15mA LM4040A/B/C 2.5 8.0

LM4040D 2.5 10.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B 0.3 0.8

ΩLM4040C 0.3 0.9

LM4040D 0.3 1.1

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 45 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Electrical Characteristics—3.000V

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 3.2967 3.3000 3.3033

LM4040B (0.2%) 3.2934 3.3000 3.3066

LM4040C (0.5%) 3.2835 3.3000 3.3165

LM4040D (1.0%) 3.2670 3.3000 3.3330

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±3.0 ±22

LM4040B ±6.0 ±26

LM4040C ±15 ±34

LM4040D ±30 ±59

Minimum Operating Current IRMIN

LM4040A/B/C 45 67 µA

LM4040D 45 70

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±20

ppm/°CIR = 1mA LM4040A/B/C ±15 ±100

LM4040D ±15 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.3 1.0

LM4040D 0.3 1.2

1mA ≤ IR ≤ 15mA LM4040A/B/C 2.5 8.0

LM4040D 2.5 10.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B 0.3 0.8

ΩLM4040C 0.3 0.9

LM4040D 0.3 1.1

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 50 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Electrical Characteristics—3.300V

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 4.092 4.096 4.100

LM4040B (0.2%) 4.088 4.096 4.104

LM4040C (0.5%) 4.076 4.096 4.116

LM4040D (1.0%) 4.055 4.096 4.137

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±4.1 ±31

LM4040B ±8.2 ±35

LM4040C ±20 ±47

LM4040D ±41 ±81

Minimum Operating Current IRMIN

LM4040A/B/C 50 73 µA

LM4040D 50 78

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±30

ppm/°CIR = 1mA LM4040A/B/C ±20 ±100

LM4040D ±20 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.5 1.2

LM4040D 0.5 1.5

1mA ≤ IR ≤ 15mA LM4040A/B/C 3.0 10.0

LM4040D 3.0 13.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B/C 0.5 1.0 Ω

LM4040D 0.5 1.3

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 64 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Electrical Characteristics—4.096V

(IR = 100μA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

Note 1: All devices are 100% production tested at TA = +25°C and are guaranteed by design for TA = TMIN to TMAX, as specified.

Note 2: The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room-temperature Reverse

Breakdown Voltage Tolerance ±[(∆VR/∆T)(max∆T)(VR)], where ∆VR/∆T is the VR temperature coefficient, max∆T is the max-

imum difference in temperature from the reference point of +25°C to TMIN or TMAX, and VR is the reverse breakdown volt-

age. The total overtemperature tolerance for the different grades in the temperature range where max∆T = +65°C is shown

below:

A grade: ±0.75% = ±0.1% ±100ppm/°C x 65°C

B grade: ±0.85% = ±0.2% ±100ppm/°C x 65°C

C grade: ±1.15% = ±0.5% ±100ppm/°C x 65°C

D grade: ±1.98% = ±1.0% ±150ppm/°C x 65°C

The total over-temperature tolerance for the different grades in the extended temperature range where max ∆T = +100°C is

shown below:

A grade: ±1.1% = ±0.1% ±100ppm/°C x 100°C

B grade: ±1.2% = ±0.2% ±100ppm/°C x 100°C

C grade: ±1.5% = ±0.5% ±100ppm/°C x 100°C

D grade: ±2.5% = ±1.0% ±150ppm/°C x 100°C

Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature reverse breakdown voltage tolerance of ±2.5V

x 0.75% = ±19mV.

Note 3: Guaranteed by design.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Reverse Breakdown Voltage VRTA = +25°C

LM4040A (0.1%) 4.995 5.000 5.005

LM4040B (0.2%) 4.990 5.000 5.010

LM4040C (0.5%) 4.975 5.000 5.025

LM4040D (1.0%) 4.950 5.000 5.050

Reverse Breakdown Voltage

Tolerance (Note 2) VR

LM4040A ±5.0 ±38

LM4040B ±10 ±43

LM4040C ±25 ±58

LM4040D ±50 ±99

Minimum Operating Current IRMIN

LM4040A/B/C 54 80 µA

LM4040D 54 85

Average Reverse Voltage

Temperature Coefcient

(Notes 2 and 3)

∆VR/∆T

IR = 10mA ±30

ppm/°CIR = 1mA LM4040A/B/C ±20 ±100

LM4040D ±20 ±150

IR = 100µA ±15

Reverse Breakdown Voltage

Change with Operating

Current Change

IRMIN ≤ IR ≤ 1mA LM4040A/B/C 0.5 1.4

LM4040D 0.5 1.8

1mA ≤ IR ≤ 15mA LM4040A/B/C 3.5 12.0

LM4040D 3.5 15.0

Reverse Dynamic

Impedance (Note 3) ZRIR = 1mA, f = 120Hz,

IAC = 0.1IR

LM4040A/B/C 0.5 1.1 Ω

LM4040D 0.5 1.5

Wideband Noise eNIR = 100µA, 10Hz ≤ f ≤ 10kHz 80 µVRMS

Reverse Breakdown Voltage

Long-Term Stability ∆VRT = 1000h 120 ppm

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Electrical Characteristics—5.000V

(IR = 100μA, SC70-3 package, TA = +25°C, unless otherwise noted.)

LM4040-2.5V

TEMPERATURE DRIFT

LM4040-02

TEMPERATURE (°C)

REFERENCE VOLTAGE CHANGE (mV)

1007550250-25

-4

-3

-2

-1

-5

-50 125

LM4040-5.0V

TEMPERATURE DRIFT

LM4040 toc03

TEMPERATURE (°C)

REFERENCE VOLTAGE CHANGE (mV)

1007550250-25

-15

-10

-5

-20

-50 125

LM4040-2.5V

REVERSE VOLTAGE vs. ISHUNT

LM4040-04

ISHUNT (mA)

REVERSE VOLTAGE CHANGE (mV)

15105

0 20

TA = +125°C

TA = -40°C

TA = +25°C

TA = +85°C

LM4040-5.0V

REVERSE VOLTAGE vs. ISHUNT

LM4040 toc05

ISHUNT (mA)

REVERSE VOLTAGE CHANGE (mV)

15105

0 20

TA = -40°C

TA = +125°C

TA = +85°C

TA = +25°C

0 50 100

REVERSE CHARACTERISTICS AND

MINIMUM OPERATING CURRENT

LM4040-01

REVERSE CURRENT (µA)

REVERSE VOLTAGE (V)

LM4040_I_3-5.0

LM4040_I_3-4.1

LM4040_I_3-3.0

LM4040_I_3-2.5

LM4040_I_3-2.1

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LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

Typical Operating Characteristics

(IR = 100μA, SC70-3 package, TA = +25°C, unless otherwise noted.)

Figure 1. Load-Transient Test Circuit

VGEN

VR AC-COUPLED

+25µA

-25µA

2mV/div

LM4040-2.5V

LOAD-TRANSIENT RESPONSE

LM4040-06

10µs/div

CH1: VGEN 2V/div

CH2: VR AC-COUPLED 2mV/div

ISHUNT = 100µA ± 25µA, RL = 100kΩ, SEE FIGURE 1

GEN

AC-COUPLED

+25µA

-25µA

10mV/div

LM4040-5.0V

LOAD-TRANSIENT RESPONSE

LM4040-07

40µs/div

ISHUNT = 100µA ± 25µA

RL = 100kΩ, SEE FIGURE 1

VGEN

VR AC-COUPLED

+250µA

-250µA

10mV/div

LM4040-2.5V

LOAD-TRANSIENT RESPONSE

LM4040-08

10ms/div

ISHUNT = 1mA ± 250µA

RL = 10kΩ, SEE FIGURE 1

VGEN

VR AC-COUPLED

+250µA

-250µA

10mV/div

LM4040-5.0V

LOAD-TRANSIENT RESPONSE

LM4040-09

10µs/div

ISHUNT = 1mA ± 250µA

RL = 10kΩ, SEE FIGURE 1

VGEN

VR AC-COUPLED

+2.5mA

-2.5mA

20mV/div

LM4040-2.5V

LOAD-TRANSIENT RESPONSE

LM4040-10

10µs/div

ISHUNT = 10mA ± 2.5mA

RL = 1kΩ, SEE FIGURE 1

VGEN

VR AC-COUPLED

+2.5mA

-2.5mA

20mV/div

LM4040-5.0V

LOAD-TRANSIENT RESPONSE

LM4040-11

10µs/div

ISHUNT = 10mA ± 2.5mA

RL = 1kΩ, SEE FIGURE 1

1kΩ

VB+

ISHUNT

VGEN

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LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

Typical Operating Characteristics (continued)

(IR = 100μA, SC70-3 package, TA = +25°C, unless otherwise noted.)

Figure 2. Startup Characteristics Test Circuit

VIN

VOUT

LM4040-2.5V

STARTUP CHARACTERISTICS

LM4040-12

0 16 208 124 24 28 32 36

RESPONSE TIME (µs)

RS = 30kΩ

SEE FIGURE 2

VIN

VOUT

LM4040-5.0V

STARTUP CHARACTERISTICS

LM4040-13

0 40 5020 3010 60 70 80 90

RESPONSE TIME (µs)

RS = 16kΩ

SEE FIGURE 2

0.1k 10k1k 100k 1M

LM4040-2.5V

OUTPUT IMPEDANCE vs. FREQUENCY

LM4040-14

FREQUENCY (Hz)

IMPEDANCE (Ω)

1000

0.1

100

IR = 150µA

IR = 1mA

C1 = 1µF

C1 = 0

0.1k 10k1k 100k 1M

LM4040-5.0V

OUTPUT IMPEDANCE vs. FREQUENCY

LM4040-15

FREQUENCY (Hz)

IMPEDANCE (Ω)

100

0.1

10 IR = 150µA

IR = 1µA

C1 = 0

C1 = 1µF

1 10010 1k 10k

LM4040-2.5V

NOISE vs. FREQUENCY

LM4040-16

FREQUENCY (Hz)

10,000

100

1000

NOISE (nV/√Hz)

110010 1k 10k

LM4040-5.0V

NOISE vs. FREQUENCY

LM4040-17

FREQUENCY (Hz)

10,000

100

1000

NOISE (nV/√Hz)

VIN

1Hz RATE

50%

DUTY CYCLE

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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Typical Operating Characteristics (continued)

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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PIN NAME FUNCTION

1 + Positive Terminal of the Shunt Reference

2 – Negative Terminal of the Shunt Reference

3 N.C. No connection. Leave this pin unconnected or connected to pin 2.

Pin Description

3 N.C.*

LM4040

SC70-3/SOT23-3

TOP VIEW

*PIN 3 MUST BE LEFT UNCONNECTED

OR CONNECTED TO PIN 2.

Pin Conguration

Detailed Description

The LM4040 shunt references use the bandgap

principle to produce a stable, accurate voltage. The

device behaves similarly to an ideal zener diode; a

fixed voltage is maintained across its output terminals

when biased with 60μA to 15mA of reverse current. The

LM4040 behaves similarly to a silicon diode when biased

with forward currents up 10mA.

Figure 3 shows a typical operating circuit. The LM4040 is

ideal for providing a stable reference from a highvoltage

power supply.

Applications Information

The device’s internal pass transistor is used to maintain

a constant output voltage (VSHUNT) by sinking the

necessary amount of current across a source resistor.

The source resistance (RS) is determined from the load

current (ILOAD) range, supply voltage (VS) variations,

VSHUNT, and desired quiescent current.

Choose the value of RS when VS is at a minimum and

ILOAD is at a maximum. Maintain a minimum ISHUNT of

60μA at all times. The RS value should be large enough to

keep ISHUNT less than 15mA for proper regulation when

VS is maximum and ILOAD is at a minimum. To prevent

damage to the device, ISHUNT should never exceed

20mA.

Therefore, the value of RS is bounded by the following

equation:

[VS(MIN) - VR ] / [60μA + ILOAD(MAX)] > RS >

[VS(MAX) - VR ] / [20mA + ILOAD(MIN)]

Choosing a larger resistance minimizes the total power

dissipation in the circuit by reducing the shunt current

(PD(TOTAL) = VS x ISHUNT). Provide a safety margin to

incorporate the worst-case tolerance of the resistor used.

Ensure that the resistor’s power rating is adequate, using

the following general power equation:

PDR = ISHUNT x (VS(MAX) - VSHUNT)

Output Capacitance

The device does not require an external capacitor for

frequency stability and is stable for any output capacitance.

Temperature Performance

The LM4040 typically exhibits an output voltage temperature

coefficient within ±15ppm/°C. The polarity of the temperature

coefficient may be different from one device to another;

some may have positive coefficients, and others may

have negative coefficients.

High-Temperature Operation

The maximum junction temperature of the LM4040 is

+150°C. The maximum operating temperature for the

LM4040_E_ is +125°C. At a maximum load current of

15mA and a maximum output voltage of 5V, the part will

dissipate 75mW of power. The power dissipation limits

of the 3-pin SC70 call for a derating value of 2.17mW/°C

above +70°C and, therefore, for 75mW of power dissipation,

the part will selfheat to 35.56°C above ambient temperature.

If the ambient temperature is +125°C, the part operates

at 159.56°C, thereby exceeding the maximum junction

temperature value of +150°C. For high-temperature

operation, care must be taken to ensure the combination

of ambient temperature, output power dissipation and

package thermal resistance does not conspire to raise

the device temperature beyond that listed in the Absolute

Maximum Ratings. Either reduce the output load current or

the ambient temperature to keep the part within the limits.

Figure 3. Typical Operating Circuit

LM4040

ILOAD

ISHUNT

ISHUNT + ILOAD

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

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+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

PART OUTPUT

VOLTAGE (V)

INITIAL

ACCURACY

(%)

TEMPCO

(ppm/°C) TEMP RANGE PIN-PACKAGE TOP

MARK

LM4040AIM3-2.1+T 2.048 0.1 100 -40°C to +85°C 3 SOT23 FZEF

LM4040AIX3-2.1+T 2.048 0.1 100 -40°C to +85°C 3 SC70 ABJ

LM4040BIM3-2.1+T 2.048 0.2 100 -40°C to +85°C 3 SOT23 FZEG

LM4040BIX3-2.1+T 2.048 0.2 100 -40°C to +85°C 3 SC70 ABK

LM4040CIM3-2.1+T 2.048 0.5 100 -40°C to +85°C 3 SOT23 FZEH

LM4040CIX3-2.1+T 2.048 0.5 100 -40°C to +85°C 3 SC70 ABL

LM4040DIM3-2.1+T 2.048 1.0 150 -40°C to +85°C 3 SOT23 FZEI

LM4040DIX3-2.1+T 2.048 1.0 150 -40°C to +85°C 3 SC70 ABM

LM4040AEM3-2.1+T 2.048 0.1 100 -40°C to +125°C 3 SOT23 FZNG

LM4040AEX3-2.1+T 2.048 0.1 100 -40°C to +125°C 3 SC70 ALF

LM4040BEM3-2.1-T 2.048 0.2 100 -40°C to +125°C 3 SOT23 FZNH

LM4040BEX3-2.1-T 2.048 0.2 100 -40°C to +125°C 3 SC70 ALG

LM4040CEM3-2.1-T 2.048 0.5 100 -40°C to +125°C 3 SOT23 FZNI

LM4040CEX3-2.1+T 2.048 0.5 100 -40°C to +125°C 3 SC70 ALH

LM4040DEM3-2.1+T 2.048 1.0 150 -40°C to +125°C 3 SOT23 FZNJ

LM4040DEX3-2.1+T 2.048 1.0 150 -40°C to +125°C 3 SC70 ALI

LM4040AIM3-2.5+T 2.500 0.1 100 -40°C to +85°C 3 SOT23 FZEJ

LM4040AIX3-2.5+T 2.500 0.1 100 -40°C to +85°C 3 SC70 ABN

LM4040BIM3-2.5+T 2.500 0.2 100 -40°C to +85°C 3 SOT23 FZEK

LM4040BIX3-2.5+T 2.500 0.2 100 -40°C to +85°C 3 SC70 ABO

LM4040BIM3-2.5/V+T 2.500 0.2 100 -40°C to +125°C 3 SOT23 FZWL

LM4040CIM3-2.5+T 2.500 0.5 100 -40°C to +85°C 3 SOT23 FZEL

LM4040CIX3-2.5+T 2.500 0.5 100 -40°C to +85°C 3 SC70 ABP

LM4040DIM3-2.5+T 2.500 1.0 150 -40°C to +85°C 3 SOT23 FZEM

LM4040DIX3-2.5+T 2.500 1.0 150 -40°C to +85°C 3 SC70 ABQ

LM4040AEM3-2.5+T 2.500 0.1 100 -40°C to +125°C 3 SOT23 FZNK

LM4040AEX3-2.5+T 2.500 0.1 100 -40°C to +125°C 3 SC70 ALJ

LM4040BEM3-2.5+T 2.500 0.2 100 -40°C to +125°C 3 SOT23 FZNL

LM4040BEX3-2.5+T 2.500 0.2 100 -40°C to +125°C 3 SC70 ALK

LM4040CEM3-2.5+T 2.500 0.5 100 -40°C to +125°C 3 SOT23 FZNM

LM4040CEM3-2.5/V+T 2.500 0.5 100 -40°C to +125°C 3 SOT23 FZVZ

LM4040CEX3-2.5+T 2.500 0.5 100 -40°C to +125°C 3 SC70 ALL

LM4040DEM3-2.5+T 2.500 1.0 150 -40°C to +125°C 3 SOT23 FZNN

LM4040DEX3-2.5+T 2.500 1.0 150 -40°C to +125°C 3 SC70 ALM

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

www.maximintegrated.com Maxim Integrated

│

Ordering Information

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

PART OUTPUT

VOLTAGE (V)

INITIAL

ACCURACY

(%)

TEMPCO

(ppm/°C) TEMP RANGE PIN-PACKAGE TOP

MARK

LM4040AIM3-3.0+T 3.000 0.1 100 -40°C to +85°C 3 SOT23 FZEN

LM4040AIX3-3.0+T 3.000 0.1 100 -40°C to +85°C 3 SC70 ABR

LM4040BIM3-3.0+T 3.000 0.2 100 -40°C to +85°C 3 SOT23 FZEO

LM4040BIX3-3.0+T 3.000 0.2 100 -40°C to +85°C 3 SC70 ABS

LM4040CIM3-3.0+T 3.000 0.5 100 -40°C to +85°C 3 SOT23 FZEP

LM4040CIX3-3.0+T 3.000 0.5 100 -40°C to +85°C 3 SC70 ABT

LM4040DIM3-3.0+T 3.000 1.0 150 -40°C to +85°C 3 SOT23 FZEQ

LM4040DIX3-3.0+T 3.000 1.0 150 -40°C to +85°C 3 SC70 ABU

LM4040AEM3-3.0+T 3.000 0.1 100 -40°C to +125°C 3 SOT23 FZNO

LM4040AEM3-3.0/V+T 3.000 0.1 100 -40°C to +125°C 3 SOT23 FZWW

LM4040AEX3-3.0+T 3.000 0.1 100 -40°C to +125°C 3 SC70 ALN

LM4040AEX3-3.0/V+T 3.000 0.1 100 -40°C to +125°C 3 SC70 ALN

LM4040BEM3-3.0+T 3.000 0.2 100 -40°C to +125°C 3 SOT23 FZNP

LM4040BEX3-3.0+T 3.000 0.2 100 -40°C to +125°C 3 SC70 ALO

LM4040CEX3-3.0+T 3.000 0.5 100 -40°C to +125°C 3 SC70 ALP

LM4040DEM3-3.0+T 3.000 1.0 150 -40°C to +125°C 3 SOT23 FZNR

LM4040DEX3-3.0+T 3.000 1.0 150 -40°C to +125°C 3 SC70 ALQ

LM4040AEX3-3.3+T 3.300 0.1 100 -40°C to +125°C 3 SC70 ANY

LM4040BEX3-3.3+T 3.300 0.2 100 -40°C to +125°C 3 SC70 ANZ

LM4040CEX3-3.3+T 3.300 0.5 100 -40°C to +125°C 3 SC70 AOA

LM4040DEX3-3.3+T 3.300 1.0 150 -40°C to +125°C 3 SC70 AOB

LM4040AIM3-4.1+T 4.096 0.1 100 -40°C to +85°C 3 SOT23 FZER

LM4040AIX3-4.1+T 4.096 0.1 100 -40°C to +85°C 3 SC70 ABV

LM4040BIM3-4.1+T 4.096 0.2 100 -40°C to +85°C 3 SOT23 FZES

LM4040BIX3-4.1+T 4.096 0.2 100 -40°C to +85°C 3 SC70 ABW

LM4040CIM3-4.1+T 4.096 0.5 100 -40°C to +85°C 3 SOT23 FZET

LM4040CIX3-4.1+T 4.096 0.5 100 -40°C to +85°C 3 SC70 ABX

LM4040DIM3-4.1+T 4.096 1.0 150 -40°C to +85°C 3 SOT23 FZEU

LM4040DIX3-4.1+T 4.096 1.0 150 -40°C to +85°C 3 SC70 ABY

LM4040AEM3-4.1+T 4.096 0.1 100 -40°C to +125°C 3 SOT23 FZNS

LM4040AEX3-4.1+T 4.096 0.1 100 -40°C to +125°C 3 SC70 ALR

LM4040BEM3-4.1+T 4.096 0.2 100 -40°C to +125°C 3 SOT23 FZNT

LM4040BEX3-4.1+T 4.096 0.2 100 -40°C to +125°C 3 SC70 ALS

LM4040CEM3-4.1+T 4.096 0.5 100 -40°C to +125°C 3 SOT23 FZNU

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

www.maximintegrated.com Maxim Integrated

│

Ordering Information (continued)

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

PART OUTPUT

VOLTAGE (V)

INITIAL

ACCURACY

(%)

TEMPCO

(ppm/°C) TEMP RANGE PIN-PACKAGE TOP

MARK

LM4040CEX3-4.1+T 4.096 0.5 100 -40°C to +125°C 3 SC70 ALT

LM4040DEM3-4.1+T 4.096 1.0 150 -40°C to +125°C 3 SOT23 FZNV

LM4040DEM3-4.1/V+T 4.096 1.0 150 -40°C to +125°C 3 SOT23 FZWA

LM4040DEX3-4.1+T 4.096 1.0 150 -40°C to +125°C 3 SC70 ALU

LM4040AIM3-5.0+T 5.000 0.1 100 -40°C to +85°C 3 SOT23 FZEV

LM4040AIM3-5.0/V+T 5.000 0.1 100 -40°C to +85°C 3 SOT23 +FZWB

LM4040AIX3-5.0+T 5.000 0.1 100 -40°C to +85°C 3 SC70 ABZ

LM4040BIM3-5.0+T 5.000 0.2 100 -40°C to +85°C 3 SOT23 FZEW

LM4040BIX3-5.0+T 5.000 0.2 100 -40°C to +85°C 3 SC70 ACA

LM4040CIM3-5.0+T 5.000 0.5 100 -40°C to +85°C 3 SOT23 FZEX

LM4040CIX3-5.0+T 5.000 0.5 100 -40°C to +85°C 3 SC70 ACB

LM4040DIM3-5.0+T 5.000 1.0 150 -40°C to +85°C 3 SOT23 FZEY

LM4040DIX3-5.0+T 5.000 1.0 150 -40°C to +85°C 3 SC70 ACC

LM4040AEM3-5.0+T 5.000 0.1 100 -40°C to +125°C 3 SOT23 FZNW

LM4040AEM3-5.0/V+T 5.000 0.1 100 -40°C to +125°C 3 SOT23 FZWB

LM4040AEX3-5.0+T 5.000 0.1 100 -40°C to +125°C 3 SC70 ALV

LM4040BEM3-5.0+T 5.000 0.2 100 -40°C to +125°C 3 SOT23 FZNX

LM4040BEX3-5.0+T 5.000 0.2 100 -40°C to +125°C 3 SC70 ALW

LM4040CEM3-5.0+T 5.000 0.5 100 -40°C to +125°C 3 SOT23 FZNY

LM4040CEM3-5.0/V+T 5.000 0.5 100 -40°C to +125°C 3 SOT23 +FZWC

LM4040CEX3-5.0+T 5.000 0.5 100 -40°C to +125°C 3 SC70 ALX

LM4040DEM3-5.0+T 5.000 1.0 150 -40°C to +125°C 3 SOT23 FZNZ

LM4040DEX3-5.0+T 5.000 1.0 150 -40°C to +125°C 3 SC70 ALY

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

3 SOT23 U3+1 21-0051 90-0179

3 SC70 X3+2 21-0075 90-0208

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

www.maximintegrated.com Maxim Integrated

│

Ordering Information (continued)

Package Information

For the latest package outline information and land patterns

(footprints), go to www.maximintegrated.com/packages. Note

that a “+”, “#”, or “-” in the package code indicates RoHS status

only. Package drawings may show a different suffix character, but

the drawing pertains to the package regardless of RoHS status.

Chip Information

PROCESS: BiCMOS

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 8/00 Initial release —

5 7/05 Updated Electrical Characteristics. 2–7

6 4/11 Updated Selector Guide, Absolute Maximum Ratings, and Ordering

Information. 1, 2, 12, 13, 14

711/11 Add /V+ automotive-qualied identication to the Selector Guide and

Ordering Information.1, 12

8 3/13 Updated Ordering Information and removed Selector Guide. 1, 13, 14

9 1/16 Added /V part to Ordering Information table 13

10 10/17 Added AEC-Q100 qualication statement to Benets and Features section 1

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

│

LM4040 Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

Revision History

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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LM4040AEM3-2.5+ LM4040AEX3-3.0/V+T LM4040AEM3-3.0/V+T LM4040BIM3-2.5/V+T LM4040AIX3-5.0+