MAXIM LM4040 Technical data

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 ✕1.8mm), 50%
smaller than comparable devices in SOT23 surface­mount 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

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 28µV

RMS

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

LM4040

Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

________________________________________________________________ Maxim Integrated Products 1

-

1

3 N.C.*

+

LM4040

SC70-3/SOT23-3

TOP VIEW

2

*PIN 3 MUST BE LEFT FLOATING
OR CONNECTED TO PIN 2.

Pin Configuration

Selector Guide

19-1787; Rev 5; 7/05

Ordering Information appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

查询LM4040_EX3-4.1供应商

PART TEMP RANGE

LM4040_IM3-2.1 -40°C to +85°C 3 SOT23-3 2.048

LM4040_IX3-2.1 -40°C to +85°C 3 SC70-3 2.048

LM4040_EM3-2.1 -40°C to +125°C 3 SOT23-3 2.048

LM4040_EX3-2.1 -40°C to +125°C 3 SC70-3 2.048

LM4040_IM3-2.5 -40°C to +85°C 3 SOT23-3 2.500

LM4040_IX3-2.5 -40°C to +85°C 3 SC70-3 2.500

LM4040_EM3-2.5 -40°C to +125°C 3 SOT23-3 2.500

LM4040_EX3-2.5 -40°C to +125°C 3 SC70-3 2.500

LM4040_IM3-3.0 -40°C to +85°C 3 SOT23-3 3.000

LM4040_IX3-3.0 -40°C to +85°C 3 SC70-3 3.000

LM4040_EM3-3.0 -40°C to +125°C 3 SOT23-3 3.000

LM4040_EX3-3.0 -40°C to +125°C 3 SC70-3 3.000

LM4040_EX3-3.3 -40°C to +125°C 3 SC70-3 3.300

LM4040_IM3-4.1 -40°C to +85°C 3 SOT23-3 4.096

LM4040_IX3-4.1 -40°C to +85°C 3 SC70-3 4.096

LM4040_EM3-4.1 -40°C to +125°C 3 SOT23-3 4.096

LM4040_EX3-4.1 -40°C to +125°C 3 SC70-3 4.096

LM4040_IM3-5.0 -40°C to +85°C 3 SOT23-3 5.000

LM4040_IX3-5.0 -40°C to +85°C 3 SC70-3 5.000

LM4040_EM3-5.0 -40°C to +125°C 3 SOT23-3 5.000

LM4040_EX3-5.0 -40°C to +125°C 3 SC70-3 5.000

PIN­PACKAGE

OUTPUT

VOLTAGE

(V)

LM4040

Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—2.048V

(IR= 100µA, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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.

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

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

Continuous Power Dissipation (T

A

= +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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LM4040A (0.1%)

LM4040B (0.2%)

LM4040C (0.5%)

Reverse Breakdown Voltage V

R

TA = +25°C

LM4040D (1.0%)

V

LM4040A

±15

LM4040B

±17

LM4040C ±10 ±23

Reverse Breakdown Voltage
Tolerance (Note 2)

V

R

LM4040D ±20 ±41

mV

LM4040A/B/C 45 65

Minimum Operating Current I

RMIN

LM4040D 45 70

µA

IR = 10mA ±20

LM4040A/B/C ±15

IR = 1mA

LM4040D ±15

Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)

IR = 100µA ±15

ppm/°C

LM4040A/B/C 0.3 1.0

I

RMIN

≤ I

R

≤ 1mA

LM4040D 0.3 1.2

LM4040A/B/C 2.5 8.0

Reverse Breakdown Voltage
Change with Operating
Current Change

1mA ≤ I

R

≤ 15mA

LM4040D 2.5

mV

LM4040A/B 0.3 0.8

LM4040C 0.3 0.9

Reverse Dynamic
Impedance (Note 3)

Z

R

IR = 1mA, f = 120Hz,
I

AC

= 0.1I

R

LM4040D 0.3 1.1

Ω

Wideband Noise e

N

IR = 100µA, 10Hz ≤ f ≤ 10kHz 28

µV

RMS

Reverse Breakdown Voltage
Long-Term Stability

∆V

R

T = 1000h 120

ppm

2.046 2.048 2.050

2.044 2.048 2.052

2.038 2.048 2.058

2.028 2.048 2.068

±2.0
±4.0

∆VR/∆T

±100
±150

10.0

LM4040

Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—2.500V

(IR= 100µA, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LM4040A (0.1%)

LM4040B (0.2%)

LM4040C (0.5%)

Reverse Breakdown Voltage V

R

TA = +25°C

LM4040D (1.0%)

V

LM4040A

±19

LM4040B

±21

LM4040C ±10 ±29

Reverse Breakdown Voltage
Tolerance (Note 2)

V

R

LM4040D ±20 ±49

mV

LM4040A/B/C 45 65

Minimum Operating Current I

RMIN

LM4040D 45 70

µA

IR = 10mA ±20

LM4040A/B/C ±15

IR = 1mA

LM4040D ±15

Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)

IR = 100µA ±15

ppm/°C

LM4040A/B/C 0.3 1.0

I

RMIN

≤ I

R

≤ 1mA

LM4040D 0.4 1.2

LM4040A/B/C 2.5 8.0

Reverse Breakdown Voltage
Change with Operating
Current Change

1mA ≤ I

R

≤ 15mA

LM4040D 2.5

mV

LM4040A/B 0.3 0.8

LM4040C 0.3 0.9

Reverse Dynamic
Impedance (Note 3)

Z

R

IR = 1mA, f = 120Hz,
I

AC

= 0.1I

R

LM4040D 0.3 1.1

Ω

Wideband Noise e

N

IR = 100µA, 10Hz ≤ f ≤ 10kHz 35

µV

RMS

Reverse Breakdown Voltage
Long-Term Stability

∆V

R

T = 1000h 120

ppm

∆VR/∆T

2.4975 2.5000 2.5025

2.4950 2.5000 2.5050

2.4875 2.5000 2.5125

2.4750 2.5000 2.5250

±2.0
±4.0

±100
±150

10.0

LM4040

Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—3.000V

(IR= 100µA, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LM4040A (0.1%)

LM4040B (0.2%)

LM4040C (0.5%)

Reverse Breakdown Voltage V

R

TA = +25°C

LM4040D (1.0%)

V

LM4040A

±22

LM4040B

±26

LM4040C ±15 ±34

Reverse Breakdown Voltage
Tolerance (Note 2)

V

R

LM4040D ±30 ±59

mV

LM4040A/B/C 45 67

Minimum Operating Current I

RMIN

LM4040D 45 70

µA

IR = 10mA ±20

LM4040A/B/C ±15

IR = 1mA

LM4040D ±15

Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)

IR = 100µA ±15

ppm/°C

LM4040A/B/C 0.3 1.0

I

RMIN

≤ I

R

≤ 1mA

LM4040D 0.3 1.2

LM4040A/B/C 2.5 8.0

Reverse Breakdown Voltage
Change with Operating
Current Change

1mA ≤ I

R

≤ 15mA

LM4040D 2.5

mV

LM4040A/B 0.3 0.8

LM4040C 0.3 0.9

Reverse Dynamic
Impedance (Note 3)

Z

R

IR = 1mA, f = 120Hz,
I

AC

= 0.1I

R

LM4040D 0.3 1.1

Ω

Wideband Noise e

N

IR = 100µA, 10Hz ≤ f ≤ 10kHz 45

µV

RMS

Reverse Breakdown Voltage
Long-Term Stability

∆V

R

T = 1000h 120

ppm

2.997 3.000 3.003

2.994 3.000 3.006

2.985 3.000 3.015

2.970 3.000 3.030

±3.0
±6.0

∆VR/∆T

±100
±150

10.0

LM4040

Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—3.300V

(IR= 100µA, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LM4040A (0.1%)

LM4040B (0.2%)

LM4040C (0.5%)

Reverse Breakdown Voltage V

R

TA = +25°C

LM4040D (1.0%)

V

LM4040A

±22

LM4040B

±26

LM4040C ±15 ±34

Reverse Breakdown Voltage
Tolerance (Note 2)

V

R

LM4040D ±30 ±59

mV

LM4040A/B/C 45 67

Minimum Operating Current I

RMIN

LM4040D 45 70

µA

IR = 10mA ±20

LM4040A/B/C ±15

IR = 1mA

LM4040D ±15

Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)

IR = 100µA ±15

ppm/°C

LM4040A/B/C 0.3 1.0

I

RMIN

≤ I

R

≤ 1mA

LM4040D 0.3 1.2

LM4040A/B/C 2.5 8.0

Reverse Breakdown Voltage
Change with Operating
Current Change

1mA ≤ I

R

≤ 15mA

LM4040D 2.5

mV

LM4040A/B 0.3 0.8

LM4040C 0.3 0.9

Reverse Dynamic
Impedance (Note 3)

Z

R

IR = 1mA, f = 120Hz,
I

AC

= 0.1I

R

LM4040D 0.3 1.1

Ω

Wideband Noise e

N

IR = 100µA, 10Hz ≤ f ≤ 10kHz 50

µV

RMS

Reverse Breakdown Voltage
Long-Term Stability

∆V

R

T = 1000h 120

ppm

∆VR/∆T

3.2967 3.3000 3.3033

3.2934 3.3000 3.3066

3.2835 3.3000 3.3165

3.2670 3.3000 3.3330

±3.0
±6.0

±100
±150

10.0