LM4040Q
AUTOMOTIVE GRADE PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
Description
The LM4040Q is a family of bandgap circuits designed to achieve
precision micro-power voltage references of 2.5V, 3.0V and 5.0V. The
devices are available in 0.2% B-grade, 0.5% C-grade and 1%
D-grade initial tolerances.
They are available in small outline SOT23 surface mount package
which is ideal for applications where space is at a premium. Excellent
performance is maintained over the 60µA to 15mA operating current
range with a typical temperature coefficient of only 20ppm/°C. The
device has been designed to be highly tolerant of capacitive loads
therefore maintaining excellent stability.
This device offers a pin for pin compatible alternative to the industry
standard LM4040 voltage reference for automotive applications.
The LM4040Q
has been qualified to AEC-Q100 Grade 1 and is
Automotive Grade supporting PPAPs
Pin Assignments
LM4040 F (SOT23)
Cathode
3
1
*
Anode
2
Top view
* Pin 1 must be left floating or connected to pin 2
Features
Small packages: SOT23
No output capacitor required
Output voltage tolerance
LM4040BQ ±0.2% at +25°C
LM4040CQ ±0.5% at +25°C
LM4040DQ ±1% at +25°C
Low output noise
10Hz to 10kHz... 45µV
RMS
Wide operating current range 60µA to 15mA
Extended temperature range -40°C to +125°C
Low temperature coefficient 100 ppm/°C (max)
Green Molding in SOT23
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Automotive Grade
Qualified to AEC-Q100 Standards for High Reliability
PPAP Capable (Note 4)
Applications
Automotive reference voltage
Data acquisition systems
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free,
"Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
4. Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally
the same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/.
LM4040Q
Document number: DS36989 Rev. 1 - 2
1 of 11
www.diodes.com
October 2015
© Diodes Incorporated
LM4040Q
Absolute Maximum Ratings
(Voltages to GND Unless Otherwise Stated)
Parameter
Continuous Reverse Current
Continuous Forward Current
Operating Junction Temperature
Storage Temperature
ESD Susceptibility
HBM
Human Body Model
MM
Machine Model
CDM
Charged Device Model
Caution:
Rating
20
10
-40 to +150
-55 to +150
4
TBC
TBC
Unit
mA
mA
°C
°C
kV
V
kV
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied.
Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when
handling and transporting these devices.)
Package Thermal Data
Package
SOT23
θ
JA
380°C/W
P
DIS
T
A
= +25°C, T
J
= +150°C
330mW
Recommended Operating Conditions
Characteristic
Reverse Current
Operating Ambient Temperature Range
Min
0.06
-40
Max
15
+125
Units
mA
°C
LM4040Q
Document number: DS36989 Rev. 1 - 2
2 of 11
www.diodes.com
October 2015
© Diodes Incorporated
LM4040Q
Electrical Characteristics
LM4040Q-2.5
Symbol
Parameter
(@T
A
= +25°C, unless otherwise specified.)
Conditions
(Note 5)
I
R
= 100µA
I
R
= 100µA
T
A
+25°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
Typ
2.5
—
45
—
±20
±15
±15
0.3
—
2.5
—
0.3
35
120
0.08
B Limits
—
±5
±21
±30
60
65
68
—
±100
—
0.8
1.0
1.0
6.0
8.0
8.0
0.8
—
—
—
C Limits
—
±12
±29
±38
60
65
68
—
±100
—
0.8
1.0
1.0
6.0
8.0
8.0
0.9
—
—
—
D Limits
—
±25
±49
±63
65
70
73
—
±150
—
1.0
1.2
1.2
8.0
10.0
10.0
1.1
—
—
—
Units
V
mV
Reverse breakdown voltage
V
REF
Reverse breakdown voltage tolerance
I
RMIN
Minimum operating current
—
I
R
= 10mA
µA
—
ppm/°C
—
ΔV
R
/ΔT
Average reverse breakdown voltage
temperature coefficient
I
R
= 1mA
I
R
= 100µA
I
RMIN
I
R
< 1mA
ΔV
R
/ΔI
R
Reverse breakdown change with current
1mA < I
R
< 15mA
mV
Z
R
e
n
V
R
V
HYST
Dynamic output impedance
Noise voltage
Long term stability (non-cumulative)
Thermal hysteresis
I
R
= 1mA, f = 120Hz , I
AC
= 0.1I
R
I
R
= 100µA, 10Hz < f < 10kHz
t = 1000Hrs, I
R
= 100µA
ΔT = -40°C to = +125°C
Ω
µV
RMS
ppm
%
Electrical Characteristics
LM4040Q-3.0
Symbol
(continued) (@T
A
= +25°C, unless otherwise specified.)
Parameter
Reverse breakdown voltage
Conditions
(Note 5)
I
R
= 100µA
I
R
= 100µA
T
A
+25°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
Typ
3.0
—
47
—
±20
±15
±15
0.4
—
2.7
—
0.4
35
120
0.08
B Limits
—
±6
±26
TBD
62
67
70
—
±100
—
0.8
1.1
1.1
6.0
9.0
9.0
0.9
—
—
—
C Limits
—
±15
±34
±45
62
67
70
—
±100
—
0.8
1.1
1.1
6.0
9.0
9.0
0.9
—
—
—
D Limits
—
±30
±59
±75
67
72
75
—
±150
—
1.0
1.3
1.3
8.0
11.0
11.0
1.2
—
—
—
Units
V
mV
V
REF
Reverse breakdown voltage tolerance
I
RMIN
Minimum operating current
—
I
R
= 10mA
µA
—
ppm/°C
—
ΔV
R
/ΔT
Average reverse breakdown voltage
temperature coefficient
I
R
= 1mA
I
R
= 100µA
I
RMIN
I
R
< 1mA
ΔV
R
/ΔI
R
Reverse breakdown change with
current
1mA < I
R
< 15mA
mV
Z
R
e
n
V
R
V
HYST
Dynamic output impedance
Noise voltage
Long term stability (non-cumulative)
Thermal hysteresis
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
I
R
= 100µA, 10Hz < f < 10kHz
t = 1000Hrs, I
R
= 100µA
ΔT = -40°C to = +125°C
Ω
µV
RMS
ppm
%
LM4040Q
Document number: DS36989 Rev. 1 - 2
3 of 11
www.diodes.com
October 2015
© Diodes Incorporated
LM4040Q
Electrical Characteristics
LM4040Q-5.0
Symbol
Parameter
Reverse breakdown voltage
V
REF
Reverse breakdown voltage tolerance
Conditions
(Note 5)
I
R
= 100µA
I
R
= 100µA
T
A
+25°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
+25°C
-40 to +85°C
-40 to +125°C
Typ
5.0
—
54
—
±30
±20
±20
0.5
—
3.5
—
0.5
80
120
0.08
B Limits
—
±10
±43
±60
74
80
83
—
±100
—
1.0
1.4
1.4
8.0
12.0
12.0
1.1
—
—
—
C Limits
—
±25
±58
±75
74
80
83
—
±100
—
1.0
1.4
1.4
8.0
12.0
12.0
1.1
—
—
—
D Limits
—
±50
±99
±125
79
85
88
—
±150
—
1.3
1.8
1.8
10.0
15.0
15.0
1.5
—
—
—
Units
V
mV
(cont.) (@T
A
= +25°C, unless otherwise specified.)
I
RMIN
Minimum operating current
—
I
R
= 10mA
µA
—
ppm/°C
—
ΔV
R
/ΔT
Average reverse breakdown voltage
temperature coefficient
I
R
= 1mA
I
R
= 100µA
I
RMIN
I
R
< 1mA
ΔV
R
/ΔI
R
Reverse breakdown change with current
1mA < I
R
< 15mA
mV
Z
R
e
n
V
R
V
HYST
Note:
Dynamic output impedance
Noise voltage
Long term stability (non-cumulative)
Themal hysteresis
I
R
= 1mA, f = 120Hz
I
AC
= 0.1I
R
I
R
= 100µA
10Hz < f < 10kHz
t = 1000Hrs, I
R
= 100µA
ΔT = -40°C to = +125°C
Ω
µV
RMS
ppm
%
5. Unless otherwise stated, voltages specified are relative to the ANODE pin.
LM4040Q
Document number: DS36989 Rev. 1 - 2
4 of 11
www.diodes.com
October 2015
© Diodes Incorporated
LM4040Q
Typical Characteristics
LM4040Q-2.5
1.00
0.75
0.50
1.00
0.75
0.50
V
REF
(%)
I
R
= 100µA
V
REF
(%)
0.25
0.00
-0.25
-0.50
-0.75
-1.00
-40
0
0.25
0.00
-0.25
-0.50
-0.75
I
R
= 1mA
40
80
TEMPERATURE (°C)
Reference Voltage
Temperature Coefficient
120
-1.00
-40
0
40
80
TEMPERATURE (°C)
Reference Voltage
Temperature Coefficient
120
100
Z
R
, REFERENCE IMPEDANCE (
)
T
A
= 25°C
I
R
= 100µA
C
L
= 1.0µF
Tantalum
C
L
= 0
T
A
= 25°C
I
R
= 1mA
C
L
= 1.0µF
Tantalum
10
C
L
= 0
1
0.1
100
1k
10k
100k
1M
0.01
100
FREQUENCY (Hz)
Reference Impedance vs. Frequency
500
480
460
440
I
R
, REVERSE CURRENT (µA)
T
A
= 25°C
I
R
= 100µA
10k
100k
FREQUENCY (Hz)
Reference Impedance vs. Frequency
1k
1M
500
400
300
200
100
0
-100
-200
T
A
= 25°C
NOISE (nV/
Hz)
420
400
380
360
340
320
300
-1
1
2
FREQUENCY (Hz)
Noise Voltage vs. Frequency
0
3
-300
-1
0
1
2
V
R
, REVERSE VOLTAGE (V)
Reference Current vs. Voltage
3
LM4040Q
Document number: DS36989 Rev. 1 - 2
5 of 11
www.diodes.com
October 2015
© Diodes Incorporated
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