LM4050BEX3-2.5/V+T [MAXIM]
Two Terminal Voltage Reference,;
| 型号： | LM4050BEX3-2.5/V+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Two Terminal Voltage Reference, 信息通信管理 光电二极管 |
| 文件： | 总14页 (文件大小：1758K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
General Description
Features
The LM4050/LM4051 are precision two-terminal, shunt-
mode, bandgap voltage references available in fixed
reverse breakdown voltages of 1.225V, 2.048V, 2.500V,
3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical
applications, the LM4050/LM4051 are offered in the sub
miniature 3-pin SC70 surface-mount packages (1.8mm
x 1.8mm), 50% smaller than comparable devices in
SOT23 surface-mount package (SOT23 versions are also
available).
● 50ppm/°C (max) Temperature Coefficient Guaranteed
over the -40°C to +125°C Temperature Range
● Ultra-Small 3-Pin SC70 Package
● 0.1% (max) Initial Accuracy
● Wide Operating Current Range: 60µA to 15mA
● Low 28µV
Output Noise (10Hz to 10kHz)
RMS
● 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and
5.000V Fixed Reverse Breakdown Voltages
Laser-trimmed resistors ensure excellent initial accuracy.
With a 50ppm/°C temperature coefficient, these devices
are offered in three grades of initial accuracy ranging from
0.1% to 0.5%. The LM4050/LM4051 have 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
LM4050/LM4051 do not require an external stabilizing
capacitor while ensuring stability with any capacitive loads.
● No Output Capacitors Required
● Tolerates Capacitive Loads
● AEC-Q100 Qualified, Refer to Ordering Information
for the Specific /V Versions
Pin Configuration
TOP VIEW
The LM4050/LM4051 specifications are guaranteed over
the temperature range of -40°C to +125°C.
+
+
-
1
2
Applications
● Portable, Battery-Powered Equipment
● Notebook Computers
● Cell Phones
LM4050
LM4051
3
N.C.*
● Industrial Process Controls
SC70/SOT23
Pin Configuration
*PIN 3 MUST BE LEFT UNCONNECTED OR CONNECTED TO PIN 2.
V
S
I
+ I
SHUNT LOAD
Ordering Information appears at end of data sheet.
R
S
I
LOAD
V
R
I
SHUNT
LM4050
19-2563; Rev 9; 10/17
LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Absolute Maximum Ratings
Reverse Current (cathode to anode)..................................20mA
Operating Temperature Range
Forward Current (anode to cathode)..................................10mA
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
LM4050/LM4051_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
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 —1.225V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4051A (0.1%)
MIN
TYP
1.2250
1.2250
1.2250
±1.2
MAX
1.2262
1.2275
1.2311
±7
UNITS
1.2238
1.2226
1.2189
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4051B (0.2%)
LM4051C (0.5%)
V
R
LM4051A
LM4051B
LM4051C
Reverse Breakdown Voltage
Tolerance (Note 2)
V
±2.4
±9
mV
µA
RTOL
±6.0
±12
Minimum Operating Current
I
45
60
RMIN
I
I
I
= 10mA
= 1mA
±20
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
±15
±50
DV /DT
ppm/°C
R
= 100µA
±15
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.7
2.5
1.5
8.0
RMIN
R
mV
1mA ≤ I ≤ 12mA
R
Reverse Dynamic
Impedance (Note 3)
Z
e
I
I
= 1mA, f = 120Hz, I
= 0.1I
R
0.5
20
1.5
Ω
R
R
R
AC
Wideband Noise
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
∆V
T = 1000h
120
ppm
R
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Electrical Characteristics —2.048V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
2.0460 2.0480 2.0500
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4050B (0.2%) 2.0439 2.0480 2.0521
LM4050C (0.5%) 2.0378 2.0480 2.0582
V
R
LM4050A
LM4050B
LM4050C
±2.0
±4.0
±10
45
±12
±14
±20
65
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10mA
= 1mA
±20
±15
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.3
2.5
1.0
8.0
RMIN
R
mV
1mA ≤ I ≤ 15mA
R
LM4050A/B
LM4050C
0.3
0.3
28
0.8
0.9
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
e
Ω
R
= 0.1I
AC
R
Wideband Noise
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Electrical Characteristics—2.500V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
2.4975 2.5000 2.5025
2.4950 2.5000 2.5050
2.4875 2.5000 2.5125
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4050B (0.2%)
LM4050C (0.5%)
V
R
LM4050A
LM4050B
LM4050C
±2.5
±5.0
±13
45
±15
±18
±25
65
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10mA
= 1mA
±20
±15
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.3
2.5
1.0
8.0
RMIN
R
mV
1mA ≤ I ≤ 15mA
R
LM4050A/B
LM4050C
0.3
0.3
35
0.8
0.9
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
e
Ω
R
= 0.1I
AC
R
Wideband Noise
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Electrical Characteristics—3.000V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
2.9970 3.0000 3.0030
2.9940 3.0000 3.0060
2.9850 3.0000 3.0150
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4050B (0.2%)
LM4050C (0.5%)
V
R
LM4050A
LM4050B
LM4050C
±3.0
±6.0
±15
45
±18
±21
±30
67
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10Ma
= 1mA
±20
±15
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.3
2.5
1.0
8.0
RMIN
R
mV
1mA ≤ I ≤ 15mA
R
LM4050A/B
LM4050C
0.3
0.3
45
0.8
0.9
Reverse Dynamic
I
I
= 1mA, f = 120Hz,
R
Z
e
Ω
R
Impedance (Note 3)
= 0.1I
AC
R
Wideband Noise
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
Electrical Characteristics—3.300V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
3.2967 3.3000 3.3033
3.2934 3.3000 3.3066
3.2835 3.3000 3.3165
Reverse Breakdown Voltage
V
R
T
= +25°C
A
LM4050B (0.2%)
LM4050C (0.5%)
V
LM4050A
LM4050B
LM4050C
±3.0
±6.0
±15
45
±18
±21
±30
67
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10mA
= 1mA
±20
±15
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.3
2.5
1.0
8.0
RMIN
R
mV
1mA ≤ I ≤ 15mA
R
LM4050A/B
LM4050C
0.3
0.3
50
0.8
0.9
Reverse Dynamic
Impedance (Note 3)
I
I
= 1mA, f = 120Hz,
R
Z
e
Ω
R
= 0.1I
AC
R
Wideband Noise
I
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Electrical Characteristics—4.096V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
4.0919 4.0960 4.1001
4.0878 4.0960 4.1042
4.0755 4.0960 4.1165
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4050B (0.2%)
LM4050C (0.5%)
V
R
LM4050A
LM4050B
LM4050C
±4.1
±8.2
±20
50
±25
±29
±41
73
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10mA
= 1mA
±30
±20
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.5
3.0
1.2
RMIN
R
mV
1mA ≤ I ≤ 15mA
10.0
R
Reverse Dynamic
Z
e
I
I
= 1mA, f = 120Hz, I
= 0.1I
R
0.5
64
1.0
Ω
R
R
R
AC
Impedance (Note 3)
Wideband Noise
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Electrical Characteristics—5.000V
(I = 100µA, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
R
A
MIN
MAX A
PARAMETER
SYMBOL
CONDITIONS
LM4050A (0.1%)
MIN
TYP
MAX
UNITS
4.9950 5.0000 5.0050
4.9900 5.0000 5.0100
4.9750 5.0000 5.0250
Reverse Breakdown Voltage
V
T
= +25°C
A
LM4050B (0.2%)
LM4050C (0.5%)
V
R
LM4050A
LM4050B
LM4050C
±5.0
±10
±25
54
±30
±35
±50
80
Reverse Breakdown Voltage
Tolerance (Note 2)
V
mV
µA
RTOL
Minimum Operating Current
I
RMIN
I
I
I
= 10mA
= 1mA
±30
±20
±15
R
R
R
Average Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
DV /DT
±50
ppm/°C
R
= 100µA
Reverse Breakdown Voltage
Change with Operating
Current Change
I
≤ I ≤ 1mA
0.5
3.5
1.4
RMIN
R
mV
1mA ≤ I ≤ 15mA
12.0
R
Reverse Dynamic
Impedance (Note 3)
Z
e
I
I
= 1mA, f = 120Hz, I
= 0.1I
R
0.5
80
1.1
Ω
R
R
AC
Wideband Noise
= 100µA, 10Hz ≤ f ≤ 10kHz
µV
RMS
N
R
Reverse Breakdown Voltage
Long-Term Stability
DV
T = 1000h
120
ppm
R
Note 1: All devices are 100% production tested at +25°C and are guaranteed by design for T = T
to T
, as specified.
MAX
A
MIN
Note 2: The limit over the full temperature range for the reverse breakdown voltage tolerance is defined as:
[V ] ±[(∆V / ∆T) X (max∆T) X (V )]
RTOL
R
R
where ∆V / ∆T is the V temperature coefficient, max∆T is the difference from the +25°C reference point to T
or T
,
R
R
MIN
MAX
and V is the reverse breakdown voltage.
R
The total tolerance over the full temperature range for the different grades where max∆T = +100°C is shown below:
• A grade: ±0.6% = ±0.1% ±50ppm/°C x 100°C
• B grade: ±0.7% = ±0.2% ±50ppm/°C x 100°C
• C grade: ±1.0% = ±0.5% ±50ppm/°C x 100°C
Note 3: Guaranteed by design.
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
OUTPUT VOLTAGE vs. TEMPERATURE
OUTPUT VOLTAGE vs. TEMPERATURE
REVERSE CHARACTERISTICS AND
MINIMUM OPERATING CURRENT
(V
OUT
= 2.500V)
(V
OUT
= 5.000V)
2.498
2.496
2.494
2.492
2.490
6
5
4
3
2
1
0
5.003
5.001
4.999
4.997
LM4050_I_3-4.1
LM4050_I_3-5.0
LM4050_I_3-3.0
4.995
4.993
4.991
4.989
4.987
LM4050_I_3-2.5
LM4050_I_3-2.1
-40 -15
10
35
60
85 110 135
-40 -15
10
35
60
85 110 135
0
50
REVERSE CURRENT (µA)
100
TEMPERATURE (°C)
TEMPERATURE (°C)
LM4050-5.0V
REVERSE VOLTAGE vs. I
LM4050-2.5V
REVERSE VOLTAGE vs. I
SHUNT
SHUNT
5
4
3
2
1
0
6
5
4
3
2
1
0
T
= +125°C
A
T
= -40°C
A
T
= -40°C
A
T
= +125°C
A
T
A
= +25°C
T
A
= +85°C
T
= +85°C
A
T
A
= +25°C
15
0
5
10
15
20
0
5
10
20
I
(mA)
I
(mA)
SHUNT
SHUNT
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
LM4050-2.5V
LOAD-TRANSIENT RESPONSE
LM4050-5.0V
LOAD-TRANSIENT RESPONSE
LM4050-2.5V
LOAD-TRANSIENT RESPONSE
LM4050 toc06
LM4050 toc07
LM4050 toc08
+25µA
+25µA
+250µA
-25µA
-25µA
-250µA
2mV/div
10mV/div
10mV/div
10µs/div
40µs/div
= 100µA ±25µA
10µs/div
= 1mA ±250µA
SHUNT
CH1: V
2V/div
GEN
I
I
CH2: V AC-COUPLED 2mV/div
SHUNT
R
I
= 100µA 25µA, R = 100kΩ, SEE FIGURE 1.
R
= 100kΩ, SEE FIGURE 1.
R
= 10kΩ, SEE FIGURE 1.
SHUNT
L
L
L
LM4050-5.0V
LOAD-TRANSIENT RESPONSE
LM4050-2.5V
LOAD-TRANSIENT RESPONSE
LM4050-5.0V
LOAD-TRANSIENT RESPONSE
LM4050 toc11
LM4050 toc09
LM4050 toc10
+250µA
+2.5mA
+2.5mA
-250µA
-2.5mA
-2.5mA
10mV/div
20mV/div
20mV/div
10µs/div
= 1mA ±250µA
10µs/div
= 10mA ±2.5µA
10µs/div
= 10mA ±2.5mA
I
I
I
SHUNT
SHUNT
SHUNT
R
= 10kΩ, SEE FIGURE 1.
R
= 1kΩ, SEE FIGURE 1.
R
= 1kΩ, SEE FIGURE 1.
L
L
L
I
SHUNT
1kΩ
+
-
V
B
R
L
V
R
V
GEN
Figure 1. Load-Transient Test Circuit
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Typical Operating Characteristics (continued)
(I = 100µA, SC70-3 package, T = +25°C, unless otherwise noted.)
R
A
LM4050-2.5V
STARTUP CHARACTERISTICS
LM4050-5.0V
STARTUP CHARACTERISTICS
LM4050-2.5V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4050 toc12
LM4050 toc13
1000
5V
0
5V
0
C = 1µF
1
100
10
I
R
= 150µA
2V
1V
0
4V
2V
0
C = 0
1
1
I
R
= 1mA
R
= 30kΩ
S
R = 16kΩ
S
0.1
0
4
8
12 16 20 24 28 32 36
RESPONSE TIME (µs)
SEE FIGURE 2.
0
10 20 30 40 50 60 70 80 90
RESPONSE TIME (µs)
SEE FIGURE 2.
0.1k
1k
10k
100k
1M
FREQUENCY (Hz)
LM4050-5.0V
OUTPUT IMPEDANCE vs. FREQUENCY
LM4050-2.5V
NOISE vs. FREQUENCY
LM4050-5.0V
NOISE vs. FREQUENCY
100
10
1
10,000
1000
100
10,000
1000
100
C = 0
1
I
R
= 150µA
I
R
= 1mA
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
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50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Pin Description
PIN
1
NAME
FUNCTION
+
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.
Detailed Description
The LM4050/LM4051 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 LM4050/
LM4051 clamps to a voltage of one diode drop below
ground when biased with forward currents up 10mA.
V
S
I
+ I
SHUNT LOAD
R
S
I
LOAD
V
R
I
SHUNT
LM4050
Figure 3 shows a typical operating circuit. The LM4050/
LM4051 are ideal for providing stable references from a
high-voltage power supply.
Applications Information
The LM4050/LM4051s’ internal pass transistors are used
Figure 3. Typical Operating Circuit
to maintain a constant output voltage (V
) by sink-
SHUNT
ing the necessary amount of current across a source
resistor. The source resistance (R ) is determined from
Temperature Performance
S
The LM4050/LM4051 typically exhibit output voltage tem-
perature coefficients within ±15ppm/°C. The polarity of the
temperature coefficients may be different from one device
to another; some may have positive coefficients, and oth-
ers may have negative coefficients.
the load current (I
) range, supply voltage (V ) varia-
LOAD
S
tions, V
, and desired quiescent current.
SHUNT
Choose the value of R when V is at a minimum and
S
S
I
is at a maximum. Maintain a minimum I
of
LOAD
SHUNT
60µA at all times. The R value should be large enough to
S
High Temperature Operation
keep I
less than 15mA for proper regulation when
SHUNT
is maximum and I
V
is at a minimum. To prevent
should never exceed 20mA.
The maximum junction temperature of the LM4050/
LM4051 is +150°C. The maximum operating temperature
for the LM4050/LM4051_E_ is +125°C. At a maximum
load current of 15mA and a maximum output voltage of
5V, the parts dissipate 75mW of power. The power dis-
sipation 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 parts self-heat to 35.56°C above ambient
temperature. If the ambient temperature is +125°C, the
parts operate at 159.56°C, thereby exceeding the maxi-
mum junction temperature value of +150°C. For high-
temperature operation, care must be taken to ensure the
combination of ambient temperature, output power dissi-
pation, 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.
S
LOAD
damage to the device, I
SHUNT
Therefore, the value of RS is bounded by the following
equation:
[V
- V ] / [60µA + I ] > R >
LOAD(MAX) S
S(MIN)
[V
R
- V ] / [20mA + I
LOAD(MIN)
]
S(MAX)
R
Choosing a larger resistance minimizes the total power
dissipation in the circuit by reducing the shunt current
(P
= V x I
). Provide a safety margin to
D(TOTAL)
S
SHUNT
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
x (V
- V
)
R
SHUNT
S(MAX)
SHUNT
Output Capacitance
The LM4050/LM4051 do not require external capaci-
tors for frequency stability and are stable for any output
capacitance.
Maxim Integrated
│ 11
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Ordering Information
OUTPUT
INITIAL
TEMPCO
(ppm/_C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
VOLTAGE (V) ACCURACY (%)
LM4050AEM3-2.1+T
LM4050AEX3-2.1+T
LM4050BEM3-2.1+T
LM4050BEX3-2.1+T
LM4050CEM3-2.1+T
LM4050CEX3-2.1+T
LM4050AEM3-2.5+T
LM4050AEX3-2.5+T
LM4050AEX3-2.5/V+T
LM4050BEM3-2.5+T
LM4050BEX3-2.5+T
LM4050BEX3-2.5/V+T
LM4050CEM3-2.5+T
LM4050CEX3-2.5+T
LM4050AEM3-3.0+T
LM4050AEX3-3.0+T
LM4050BEM3-3.0+T
LM4050BEM3-3.0/V+T
LM4050BEX3-3.0+T
LM4050CEM3-3.0+T
LM4050CEX3-3.0+T
LM4050AEX3-3.3+T
LM4050AEX3-3.3/V+T
LM4050BEX3-3.3+T
LM4050CEX3-3.3+T
LM4050CEX3-3.3/V+T
LM4050AEM3-4.1+T
LM4050AEX3-4.1+T
LM4050BEM3-4.1+T
LM4050BEM3-4.1/V+T
LM4050BEX3-4.1+T
LM4050CEM3-4.1+T
LM4050CEX3-4.1+T
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
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.300
3.300
3.300
3.300
3.300
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
0.1
0.1
0.1
0.2
0.2
0.2
0.5
0.5
0.1
0.1
0.2
0.2
0.2
0.5
0.5
0.1
0.1
0.2
0.5
0.5
0.1
0.1
0.2
0.2
0.2
0.5
0.5
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
-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 +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 +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 SC70
3 SOT23
3 SC70
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SC70
3 SC70
3 SC70
3 SC70
3 SC70
3 SC70
3 SOT23
3 SC70
3 SOT23
3 SOT23
3 SC70
3 SOT23
3 SC70
FZTR
ASM
FZTS
ASN
FZTT
ASO
FZTU
ASP
+AUE
FZTV
ASQ
+AVN
FZTW
ASR
FZTX
ASS
FZTY
+FZVG
AST
FZTZ
ASU
AOJ
+AUE
AOK
AOL
+AUE
FZUA
ASV
FZUB
+FZVL
ASW
FZUC
ASX
Maxim Integrated
│ 12
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Ordering Information (continued)
OUTPUT
INITIAL
TEMPCO
(ppm/_C)
TOP
MARK
PART
TEMP RANGE
PIN-PACKAGE
VOLTAGE (V) ACCURACY (%)
LM4050AEM3-5.0+T
LM4050AEM3-5.0/V+T
LM4050AEX3-5.0+T
LM4050BEM3-5.0+T
LM4050BEX3-5.0+T
LM4050CEM3-5.0+T
LM4050CEM3-5.0/V+T
LM4050CEX3-5.0+T
LM4051AEM3-1.2+T
LM4051AEX3-1.2+T
LM4051BEM3-1.2+T
LM4051BEX3-1.2+T
LM4051CEM3-1.2+T
LM4051CEX3-1.2+T
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
1.225
1.225
1.225
1.225
1.225
1.225
0.1
0.1
0.1
0.2
0.2
0.5
0.5
0.5
0.1
0.1
0.2
0.2
0.5
0.5
50
50
50
50
50
50
50
50
50
50
50
50
50
50
-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 +125°C
-40°C to +125°C
3 SOT23
3 SOT23
3 SC70
FZUD
+FZXL
ASY
3 SOT23
3 SC70
FZUE
ASZ
3 SOT23
3 SOT23
3 SC70
FZUF
+FZVM
ATA
3 SOT23
3 SC70
FZTO
ASJ
3 SOT23
3 SC70
FZTP
ASK
3 SOT23
3 SC70
FZTQ
ASL
Chip Information
PROCESS: BiCMOS
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.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
3 SOT23
3 SC70
U3+1
X3+2
21-0051
21-0075
90-0179
90-0208
Maxim Integrated
│ 13
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LM4050/LM4051
50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
DESCRIPTION
CHANGED
0
4
7/02
Initial release
—
Added lead-free notation and corrected topmarks in the Ordering Information
and Selector Guide sections
5/09
1, 12
5
6
7
8
5/11
9/11
Added automotive packages and updated the Absolute Maximum Ratings.
Added automotive packages to Selector Guide and Ordering Information.
Removed Selector Guide and revised Ordering Information.
Added LM4050AEM3-5.0/V+T to Ordering Information.
1, 2
1, 12
1, 12
13
1/13
11/14
Added AEC qualification statement to Benefits and Features and updated
Ordering Information table
9
11/17
1, 13
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.
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 and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2017 Maxim Integrated Products, Inc.
│ 14
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