LM4040CEX3-5.0+ [MAXIM]
Two Terminal Voltage Reference;
| 型号： | LM4040CEX3-5.0+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Two Terminal Voltage Reference |
| 文件： | 总15页 (文件大小：452K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
General Description
Features
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 applica-
tions, the LM4040 is offered in the subminiature 3-pin
o Ultra-Small 3-Pin SC70 Package
o 0.1% (max) Initial Accuracy
o 100ppm/°C (max) Temperature Coefficient
Guaranteed over -40°C to +125°C Temperature
Range
o Wide Operating Current Range: 60µA to 15mA
ꢀ
SC70 surface-mount package (1.8mm 1.8mm), 50%
smaller than comparable devices in SOT23 surface-
mount packages (SOT23 versions are also available).
o Low 28µV
Output Noise (10Hz to 10kHz)
RMS
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, ensur-
ing stable reverse breakdown voltage accuracy over a
wide range of operating temperatures and currents.
o 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V
Fixed Reverse Breakdown Voltages
o No Output Capacitors Required
o Tolerates Capacitive Loads
The LM4040 does not require an external stabilizing
capacitor while ensuring stability with any capacitive
load.
Pin Configuration
TOP VIEW
The LM4040 is guaranteed over the temperature range
of -40°C to +125°C.
+
+
1
2
For a 1.225V output version, refer to the LM4041 data
sheet.
LM4040
3
N.C.*
________________________Applications
-
Portable, Battery-Powered Equipment
Notebook Computers
SC70-3/SOT23-3
Cell Phones
*PIN 3 MUST BE LEFT UNCONNECTED
OR CONNECTED TO PIN 2.
Industrial Process Controls
Ordering Information appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1787; Rev 8; 3/13
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ABSOLUTE MAXIMUM RATINGS
Reverse Current (cathode to anode) ..................................20mA
Forward Current (anode to cathode) ..................................10mA
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
Continuous Power Dissipation (T = +70°C)
A
3-Pin SC70 (derate 2.17mW/°C above +70°C)............174mW
3-Pin SOT23 (derate 4.01mW/°C above +70°C)..........320mW
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
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
2.048
2.048
2.048
2.048
2.0
4.0
10
MAX
2.050
2.052
2.058
2.068
15
UNITS
2.046
2.044
2.038
2.028
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
17
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
23
20
41
45
65
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
20
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
15
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
15
= 100µA
15
R
LM4040A/B/C
LM4040D
0.3
0.3
2.5
2.5
0.3
0.3
0.3
28
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
LM4040D
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
2
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—2.500V
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
MAX
UNITS
2.4975 2.5000 2.5025
2.4950 2.5000 2.5050
2.4875 2.5000 2.5125
2.4750 2.5000 2.5250
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
2.0
4.0
10
19
21
29
49
65
70
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
20
45
Minimum Operating Current
I
RMIN
45
I
I
I
I
= 10mA
20
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
15
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
15
= 100µA
15
R
LM4040A/B/C
LM4040D
0.3
0.4
2.5
2.5
0.3
0.3
0.3
35
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
LM4040D
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
Maxim Integrated
3
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—3.000V
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
3.000
3.000
3.000
3.000
3.0
6.0
15
MAX
3.003
3.006
3.015
3.030
22
UNITS
2.997
2.994
2.985
2.970
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
26
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
34
30
59
45
67
Minimum Operating Current
I
RMIN
45
70
I
I
I
I
= 10mA
20
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
15
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
15
= 100µA
15
R
LM4040A/B/C
LM4040D
0.3
0.3
2.5
2.5
0.3
0.3
0.3
45
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
LM4040D
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
4
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—3.300V
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
MAX
UNITS
3.2967 3.3000 3.3033
3.2934 3.3000 3.3066
3.2835 3.3000 3.3165
3.2670 3.3000 3.3330
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
3.0
6.0
15
22
26
34
59
67
70
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
30
45
Minimum Operating Current
I
RMIN
45
I
I
I
I
= 10mA
20
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
15
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
15
= 100µA
15
R
LM4040A/B/C
LM4040D
0.3
0.3
2.5
2.5
0.3
0.3
0.3
50
1.0
1.2
8.0
10.0
0.8
0.9
1.1
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
1mA ≤ I ≤ 15mA
R
LM4040A/B
LM4040C
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
LM4040D
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
Maxim Integrated
5
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—4.096V
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
4.096
4.096
4.096
4.096
4.1
8.2
20
MAX
4.100
4.104
4.116
4.137
31
UNITS
4.092
4.088
4.076
4.055
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
35
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
47
41
81
50
73
Minimum Operating Current
I
RMIN
50
78
I
I
I
I
= 10mA
30
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
20
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
20
= 100µA
15
R
LM4040A/B/C
LM4040D
0.5
0.5
3.0
3.0
0.5
0.5
64
1.2
1.5
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
10.0
13.0
1.0
1mA ≤ I ≤ 15mA
R
LM4040A/B/C
LM4040D
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
1.3
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
6
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
ELECTRICAL CHARACTERISTICS—5.000V
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
(I = 100µA, T = T
to T
R
A
MIN
PARAMETER
SYMBOL
CONDITIONS
LM4040A (0.1%)
MIN
TYP
5.000
5.000
5.000
5.000
5.0
10
MAX
5.005
5.010
5.025
5.050
38
UNITS
4.995
4.990
4.975
4.950
LM4040B (0.2%)
LM4040C (0.5%)
LM4040D (1.0%)
Reverse Breakdown Voltage
V
V
T
= +25°C
V
R
R
A
LM4040A
LM4040B
LM4040C
LM4040D
LM4040A/B/C
LM4040D
43
Reverse Breakdown Voltage
Tolerance (Note 2)
mV
µA
25
58
50
99
54
80
Minimum Operating Current
I
RMIN
54
85
I
I
I
I
= 10mA
30
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2 and 3)
LM4040A/B/C
LM4040D
20
100
150
= 1mA
∆V /∆T
ppm/°C
R
R
20
= 100µA
15
R
LM4040A/B/C
LM4040D
0.5
0.5
3.5
3.5
0.5
0.5
80
1.4
1.8
≤ I ≤ 1mA
R
RMIN
Reverse Breakdown Voltage
Change with Operating
Current Change
mV
LM4040A/B/C
LM4040D
12.0
15.0
1.1
1mA ≤ I ≤ 15mA
R
LM4040A/B/C
LM4040D
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
= 0.1I
R
R
Z
Ω
R
AC
1.5
Wideband Noise
e
I
R
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
Note 1: All devices are 100% production tested at T = +25°C and are guaranteed by design for T = T
to T
MAX
, as specified.
A
A
MIN
Note 2: The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room-temperature Reverse
Breakdown Voltage Tolerance ± ±(∆V /∆T)(max∆T)(V )], where ∆V /∆T is the V temperature coefficient, max∆T is the maxi-
R
R
R
R
mum difference in temperature from the reference point of +25°C to T
or T
, and V is the reverse breakdown volt-
MIN
MAX R
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 65°C
B grade: ± 0.85% = ± 0.2% ± 100ppm/°C 65°C
C grade: ± 1.15% = ± 0.5% ± 100ppm/°C 65°C
D grade: ± 1.98% = ± 1.0% ± 150ppm/°C 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 100°C
B grade: ± 1.2% = ± 0.2% ± 100ppm/°C 100°C
C grade: ± 1.5% = ± 0.5% ± 100ppm/°C 100°C
ꢀ
ꢀ
ꢀ
ꢀ
D grade: ± 2.5% = ± 1.0% ± 150ppm/°C 100°C
Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature reverse breakdown voltage tolerance of ± 2.5V
ꢀ
0.75% = ± 19mV.
Note 3: Guaranteed by design.
Maxim Integrated
7
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
REVERSE CHARACTERISTICS AND
MINIMUM OPERATING CURRENT
LM4040-2.5V
TEMPERATURE DRIFT
LM4040-5.0V
TEMPERATURE DRIFT
6
5
4
3
2
1
0
1
0
5
0
LM4040_I_3-4.1
LM4040_I_3-5.0
-1
-2
-3
-4
-5
LM4040_I_3-3.0
-5
-10
-15
-20
LM4040_I_3-2.5
LM4040_I_3-2.1
0
50
100
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
REVERSE CURRENT (µA)
TEMPERATURE (°C)
TEMPERATURE (°C)
LM4040-2.5V
REVERSE VOLTAGE vs. I
LM4040-5.0V
REVERSE VOLTAGE vs. I
SHUNT
SHUNT
5
4
3
2
1
6
5
4
3
2
1
T
= +125°C
A
T
= -40°C
A
T
= -40°C
A
T
= +125°C
A
T
= +25°C
A
T
= +85°C
A
T
= +85°C
A
T
A
= +25°C
0
0
0
0
5
10
(mA)
15
20
5
10
(mA)
15
20
I
I
SHUNT
SHUNT
8
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70 package, T = +25°C, unless otherwise noted.)
R
A
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-07
LM4040-08
LM4040-06
+25µA
+250µA
+25µA
-25µA
-250µA
-25µA
10mV/div
2mV/div
10mV/div
40µs/div
= 100µA 25µA
10µs/div
= 1mA 250µA
10µs/div
CH2: V AC-COUPLED 2mV/div
I
I
SHUNT
R = 10kΩ, SEE FIGURE 1
L
CH1: V 2V/div
SHUNT
L
GEN
R = 100kΩ, SEE FIGURE 1
R
I
= 100µA 25µA, R = 100kΩ, SEE FIGURE 1
SHUNT
L
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-5.0V
LOAD-TRANSIENT RESPONSE
LM4040-2.5V
LOAD-TRANSIENT RESPONSE
LM4040-11
LM4040-09
LM4040-10
+2.5mA
+250µA
+2.5mA
-2.5mA
-250µA
-2.5mA
20mV/div
10mV/div
20mV/div
10µs/div
= 10mA 2.5mA
SHUNT
R = 1kΩ, SEE FIGURE 1
L
10µs/div
10µs/div
= 10mA 2.5mA
R = 1kΩ, SEE FIGURE 1
I
I
= 1mA 250µA
R = 10kΩ, SEE FIGURE 1
I
SHUNT
L
SHUNT
L
I
SHUNT
1kΩ
+
-
V
B
R
L
V
R
V
GEN
Figure 1. Load-Transient Test Circuit
Maxim Integrated
9
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70 package, T = +25°C, unless otherwise noted.)
R
A
LM4040-2.5V
STARTUP CHARACTERISTICS
LM4040-5.0V
STARTUP CHARACTERISTICS
LM4040-2.5V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-12
LM4040-13
1000
5V
5V
0V
C = 1µF
1
0V
100
10
I
= 150µA
R
2V
1V
0V
4V
2V
0V
C = 0
1
1
I
= 1mA
R
R
= 30kΩ
R
= 16kΩ
S
S
SEE FIGURE 2
SEE FIGURE 2
0.1
0
4
8
12 16 20 24 28 32 36
0
10 20 30 40 50 60 70 80 90
0.1k
1k
10k
100k
1M
RESPONSE TIME (µs)
RESPONSE TIME (µs)
FREQUENCY (Hz)
LM4040-5.0V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4040-2.5V
NOISE vs. FREQUENCY
LM4040-5.0V
NOISE vs. FREQUENCY
100
10
1
10,000
1000
100
10,000
1000
100
C = 0
1
I
= 150µA
R
I
= 1mA
R
C = 1µF
1
0.1
0.1k
1k
10k
FREQUENCY (Hz)
100k
1M
1
10
100
1k
10k
1
10
100
1k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
R
S
V
IN
V
R
1Hz RATE
50%
DUTY CYCLE
Figure 2. Startup Characteristics Test Circuit
10
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Pin Description
PIN
1
NAME
+
FUNCTION
Positive Terminal of the Shunt Reference
Negative Terminal of the Shunt Reference
2
−
3
N.C.
No connection. Leave this pin unconnected or connected to pin 2.
Detailed Description
V
S
The LM4040 shunt references use the bandgap princi-
ple to produce a stable, accurate voltage. The device
behaves similarly to an ideal zener diode; a fixed volt-
age 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.
I
+ I
SHUNT LOAD
R
S
I
LOAD
V
R
I
SHUNT
LM4040
Figure 3 shows a typical operating circuit. The LM4040
is ideal for providing a stable reference from a high-
voltage power supply.
Applications Information
Figure 3. Typical Operating Circuit
The LM4040’s internal pass transistor is used to maintain a
Temperature Performance
The LM4040 typically exhibits an output voltage tem-
perature 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.
constant output voltage (V
) by sinking the necessary
SHUNT
amount of current across a source resistor. The source
resistance (R ) is determined from the load current (I
)
S
LOAD
range, supply voltage (V ) variations, V
, and desired
SHUNT
S
quiescent current.
Choose the value of R when V is at a minimum and I
S
S
LOAD
of 60µA at all
is at a maximum. Maintain a minimum I
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 thus for 75mW of power dissipation, the part will self-
heat 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.
SHUNT
times. The R value should be large enough to keep
S
I
less than 15mA for proper regulation when V is
SHUNT
S
maximum and I
to the device, I
is at a minimum. To prevent damage
should never exceed 20mA.
LOAD
SHUNT
Therefore, the value of R is bounded by the following
S
equation:
±V
- V ] / ±60µA + I
] > R >
LOAD(MIN)
S(MIN)
±V
R
LOAD(MAX) S
- V ] / ±20mA + I
]
S(MAX)
R
Choosing a larger resistance minimizes the total power dis-
sipation in the circuit by reducing the shunt current
ꢀ
(P
= V
I ). Provide a safety margin to
SHUNT
D(TOTAL)
S
incorporate the worst-case tolerance of the resistor used.
Ensure that the resistor’s power rating is adequate, using
the following general power equation:
ꢀ
PD = I
(V
S(MAX)
- V
)
R
SHUNT
SHUNT
Output Capacitance
The LM4040 does not require an external capacitor for fre-
quency stability and is stable for any output capacitance.
Maxim Integrated
11
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Ordering Information
INITIAL
ACCURACY
(%)
OUTPUT
VOLTAGE (V)
TEMPCO
(ppm/°C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
LM4040AIM3-2.1+T
LM4040AIX3-2.1+T
LM4040BIM3-2.1+T
LM4040BIX3-2.1+T
LM4040CIM3-2.1+T
LM4040CIX3-2.1+T
LM4040DIM3-2.1+T
LM4040DIX3-2.1+T
LM4040AEM3-2.1+T
LM4040AEX3-2.1+T
LM4040BEM3-2.1-T
LM4040BEX3-2.1-T
LM4040CEM3-2.1-T
LM4040CEX3-2.1+T
LM4040DEM3-2.1+T
LM4040DEX3-2.1+T
LM4040AIM3-2.5+T
LM4040AIX3-2.5+T
LM4040BIM3-2.5+T
LM4040BIM3-2.5/V+T
LM4040BIX3-2.5+T
LM4040CIM3-2.5+T
LM4040CIX3-2.5+T
LM4040DIM3-2.5+T
LM4040DIX3-2.5+T
LM4040AEM3-2.5+T
LM4040AEX3-2.5+T
LM4040BEM3-2.5+T
LM4040BEX3-2.5+T
LM4040CEM3-2.5+T
LM4040CEM3-2.5/V+T
LM4040CEX3-2.5+T
LM4040DEM3-2.5+T
LM4040DEX3-2.5+T
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
0.5
0.5
1.0
1.0
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
100
100
100
100
150
150
100
100
100
100
100
100
100
150
150
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SC70
FZEF
ABJ
FZEG
ABK
FZEH
ABL
FZEI
ABM
FZNG
ALF
FZNH
ALG
FZNI
ALH
FZNJ
ALI
FZEJ
ABN
FZEK
FZWL
ABO
FZEL
ABP
FZEM
ABQ
FZNK
ALJ
FZNL
ALK
FZNM
FZVZ
ALL
FZNN
ALM
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
12
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Ordering Information (continued)
INITIAL
ACCURACY
(%)
OUTPUT
VOLTAGE (V)
TEMPCO
(ppm/°C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
LM4040AIM3-3.0+T
LM4040AIX3-3.0+T
LM4040BIM3-3.0+T
LM4040BIX3-3.0+T
LM4040CIM3-3.0+T
LM4040CIX3-3.0+T
LM4040DIM3-3.0+T
LM4040DIX3-3.0+T
LM4040AEM3-3.0+T
LM4040AEM3-3.0/V+T
LM4040AEX3-3.0+T
LM4040BEM3-3.0+T
LM4040BEX3-3.0+T
LM4040CEX3-3.0+T
LM4040DEM3-3.0+T
LM4040DEX3-3.0+T
LM4040AEX3-3.3+T
LM4040BEX3-3.3+T
LM4040CEX3-3.3+T
LM4040DEX3-3.3+T
LM4040AIM3-4.1+T
LM4040AIX3-4.1+T
LM4040BIM3-4.1+T
LM4040BIX3-4.1+T
LM4040CIM3-4.1+T
LM4040CIX3-4.1+T
LM4040DIM3-4.1+T
LM4040DIX3-4.1+T
LM4040AEM3-4.1+T
LM4040AEX3-4.1+T
LM4040BEM3-4.1+T
LM4040BEX3-4.1+T
LM4040CEM3-4.1+T
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.300
3.300
3.300
3.300
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.1
0.2
0.2
0.5
1.0
1.0
0.1
0.2
0.5
1.0
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.2
0.2
0.5
100
100
100
100
100
100
150
150
100
100
100
100
100
100
150
150
100
100
100
150
100
100
100
100
100
100
150
150
100
100
100
100
100
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SC70
3 SOT23
3 SC70
3 SC70
3 SC70
3 SC70
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
FZEN
ABR
FZEO
ABS
FZEP
ABT
FZEQ
ABU
FZNO
FZWW
ALN
FZNP
ALO
ALP
FZNR
ALQ
ANY
ANZ
AOA
AOB
FZER
ABV
FZES
ABW
FZET
ABX
FZEU
ABY
FZNS
ALR
FZNT
ALS
FZNU
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Maxim Integrated
13
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Ordering Information (continued)
INITIAL
ACCURACY
(%)
OUTPUT
VOLTAGE (V)
TEMPCO
(ppm/°C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
LM4040CEX3-4.1+T
LM4040DEM3-4.1+T
LM4040DEM3-4.1/V+T
LM4040DEX3-4.1+T
LM4040AIM3-5.0+T
LM4040AIM3-5.0/V+T
LM4040AIX3-5.0+T
LM4040BIM3-5.0+T
LM4040BIX3-5.0+T
LM4040CIM3-5.0+T
LM4040CIX3-5.0+T
LM4040DIM3-5.0+T
LM4040DIX3-5.0+T
LM4040AEM3-5.0+T
LM4040AEM3-5.0/V+T
LM4040AEX3-5.0+T
LM4040BEM3-5.0+T
LM4040BEX3-5.0+T
LM4040CEM3-5.0+T
LM4040CEM3-5.0/V+T
LM4040CEX3-5.0+T
LM4040DEM3-5.0+T
LM4040DEX3-5.0+T
4.096
4.096
4.096
4.096
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
0.5
1.0
1.0
1.0
0.1
0.1
0.1
0.2
0.2
0.5
0.5
1.0
1.0
0.1
0.1
0.1
0.2
0.2
0.5
0.5
0.5
1.0
1.0
100
150
150
150
100
100
100
100
100
100
100
150
150
100
100
100
100
100
100
100
100
150
150
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
3 SC70
ALT
FZNV
FZWA
ALU
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
FZEV
+FZWB
ABZ
3 SOT23
3 SC70
FZEW
ACA
3 SOT23
3 SC70
FZEX
ACB
3 SOT23
3 SC70
FZEY
ACC
3 SOT23
3 SOT23
3 SC70
FZNW
FZWB
ALV
3 SOT23
3 SC70
FZNX
ALW
3 SOT23
3 SOT23
3 SC70
FZNY
+FZWC
ALX
3 SOT23
3 SC70
FZNZ
ALY
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Package Information
Chip Information
For the latest package outline information and land patterns (foot-
prints), 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.
PROCESS: BiCMOS
LAND
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE NO.
PATTERN NO.
90-0179
90-0208
3 SOT23
U3+1
21-0051
21-0075
3 SC70
X3+2
14
Maxim Integrated
LM4040
Improved Precision Micropower Shunt Voltage
Reference with Multiple Reverse Breakdown Voltages
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
5
8/00
7/05
Initial release
—
Updated Electrical Characteristics.
2–7
Updated Selector Guide, Absolute Maximum Ratings, and Ordering
Information.
6
4/11
1, 2, 12, 13, 14
Add /V+ automotive-qualified identification to the Selector Guide and
Ordering Information.
7
8
11/11
3/13
1, 12
Updated Ordering Information and removed Selector Guide.
1, 13, 14
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 specifications 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.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 ________________________________ 15
© 2013 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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