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LM4050AIM3-2.5 데이터시트 PDF




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부품번호 LM4050AIM3-2.5 기능
기능 Precision Micropower Shunt Voltage Reference
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LM4050AIM3-2.5 데이터시트, 핀배열, 회로
May 2000
LM4050
Precision Micropower Shunt Voltage Reference
General Description
Ideal for space critical applications, the LM4050 precision
voltage reference is available in the sub-miniature (3 mm x
1.3 mm) SSOT-23 surface-mount package. The LM4050’s
design eliminates the need for an external stabilizing capaci-
tor while ensuring stability with any capacitive load, thus
making the LM4050 easy to use. Further reducing design ef-
fort is the availability of several fixed reverse breakdown volt-
ages: 2.500V, 4.096V, 5.000V, 8.192V, and 10.000V. The
minimum operating current increases from 60 µA for the
LM4050-2.5 to 100 µA for the LM4050-10.0. All versions
have a maximum operating current of 15 mA.
The LM4050 utilizes fuse and zener-zap reverse breakdown
voltage trim during wafer sort to ensure that the prime parts
have an accuracy of better than ±0.1% (A grade) at 25˚C.
Bandgap reference temperature drift curvature correction
and low dynamic impedance ensure stable reverse break-
down voltage accuracy over a wide range of operating tem-
peratures and currents.
All grades and voltage options of the LM4050 operate be-
tween −40˚C and +85˚C. Selected parts can operate in the
extended temperature range, from −40˚C and +125˚C.
Features
n Small packages: SSOT-23
n No output capacitor required
n Tolerates capacitive loads
n Fixed reverse breakdown voltages of 2.500V, 4.096V,
5.000V, 8.192V, and 10.000V
Key Specifications (LM4050-2.5)
n Output voltage tolerance
(A grade, 25˚C)
n Low output noise
(10 Hz to 10 kHz)
n Wide operating current range
n Industrial temperature range
n Extended temperature range
n Low temperature coefficient
±0.1% (max)
41 µVrms(typ)
60 µA to 15 mA
−40˚C to +85˚C
−40˚C to +125˚C
50 ppm/˚C (max)
Applications
n Portable, Battery-Powered Equipment
n Data Acquisition Systems
n Instrumentation
n Process Control
n Energy Management
n Product Testing
n Automotive
n Precision Audio Components
Connection Diagrams
SSOT-23
*This pin must be left floating or connected to pin 2.
DS101045-1
Top View
See NS Package Number MF03A
© 2000 National Semiconductor Corporation DS101045
www.national.com




LM4050AIM3-2.5 pdf, 반도체, 판매, 대치품
LM4050-4.1
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for
verse Breakdown Voltage
TA = TJ =
tolerances
oTfM±IN0.t1o%T, M±A0X.;2%all,
other limits TA = TJ = 25˚C.
and 0.5% respectively.
The
grades
A,
B
and
C
designate
initial
Re-
Symbol
Parameter
Conditions
VR
IRMIN
Reverse Breakdown
Voltage
IR = 100 µA
Reverse Breakdown
IR = 100 µA
Voltage Tolerance (Note 7)
Minimum Operating Current
VR/T Average Reverse
Breakdown Voltage
Temperature
Coefficient(Note 7)
VR/IR Reverse Breakdown
Voltage Change with
Operating Current Change
(Note 8)
IR = 10 mA
IR = 1 mA
IR = 100 µA
IRMIN IR 1 mA
1 mA IR 15 mA
ZR
eN
VR
VHYST
Reverse Dynamic
Impedance
Wideband Noise
IR = 1 mA, f = 120 Hz,
IAC = 0.1 IR
IR = 100 µA
10 Hz f 10 kHz
Reverse Breakdown
t = 1000 hrs
Voltage Long Term Stability T = 25˚C ±0.1˚C
IR = 100 µA
Output Hysteresis
T = −40˚C to 125˚C
LM4050AIM3 LM4050BIM3 LM4050CIM3
Typical
(Note 5)
Limits
Limits
Limits
(Note 6)
(Note 6)
(Note 6)
4.096
Units
(Limit)
V
±4.1
±18
52
68
73
±30
±20
±20 ±50
0.2
0.9
1.2
2.0
7.0
10.0
0.5
±8.2
±22
68
73
±50
0.9
1.2
7.0
10.0
±21 mV (max)
±34 mV (max)
µA
68 µA (max)
73 µA (max)
ppm/˚C
ppm/˚C
±50 ppm/˚C (max)
0.9
1.2
7.0
10.0
mV
mV (max)
mV (max)
mV
mV (max)
mV (max)
93 µVrms
120 ppm
1.148
mV
www.national.com
4

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LM4050AIM3-2.5 전자부품, 판매, 대치품
LM4050-10.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for
verse Breakdown Voltage
TA = TJ =
tolerances
oTfM±IN0.t1o%TaMnAdX;±a0ll.2o%thearnldim0it.s5%TAre=spTeJc=tiv2e5ly˚.C.
The
grades
A,
B
and
C
designate
initial
Re-
Symbol
Parameter
Conditions
LM4050AIM3 LM4050BIM3 LM4050CIM3
Typical
(Note 5)
Limits
Limits
Limits
Units
(Limit)
(Note 6)
(Note 6)
(Note 6)
VR Reverse Breakdown
Voltage
IR = 150 µA
10.00
V
Reverse Breakdown
IR = 150 µA
Voltage Tolerance (Note 7)
±10 ±20 ±50 mV (max)
±43 ±53 ±83 mV (max)
IRMIN Minimum Operating Current
80 µA
100 100 100 µA (max)
103 103 103 µA (max)
VR/T Average Reverse
Breakdown Voltage
Temperature Coefficient
(Note 7)
IR = 10 mA
IR = 1 mA
IR = 150 µA
±40 ppm/˚C
±20 ppm/˚C
±20 ±50 ±50 ±50 ppm/˚C
(max)
VR/IR Reverse Breakdown
IRMIN IR 1 mA
0.8
mV
Voltage Change with
Operating Current Change
1.5 1.5 1.5 mV (max)
(Note 8)
3.5 3.5 3.5 mV (max)
1 mA IR 15 mA
8.0
mV
12.0 12.0 12.0 mV (max)
23.0 23.0 23.0 mV (max)
ZR Reverse Dynamic
Impedance
eN Wideband Noise
IR = 1 mA, f = 120 Hz,
IAC = 0.1 IR
IR = 150 µA
10 Hz f 10 kHz
0.7
150
µVrms
VR Reverse Breakdown
t = 1000 hrs
Voltage Long Term Stability T = 25˚C ±0.1˚C
120
ppm
VHYST Output Hysteresis
IR = 150 µA
T = −40˚C to 125˚C
2.8
mV
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed speci-
fications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Note 2: If parts are exposed to temperatures outside the specific operating temperature range, the output may shift due to hysteresis.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (junction to am-
bient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax − TA)/θJA or the number
given in the Absolute Maximum Ratings, whichever is lower. For the LM4050, TJmax = 125˚C, and the typical thermal resistance (θJA), when board mounted, is
326˚C/W for the SSOT-23 package.
Note 4: The human body model is a 100 pF capacitor discharged through a 1.5 kresistor into each pin. The machine model is a 200 pF capacitor discharged di-
rectly into each pin.
Note 5: Typicals are at TJ = 25˚C and represent most likely parametric norm.
Note 6: Limits are 100% production tested at 25˚C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods. The
limits are used to calculate National’s AOQL.
Note 7: The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance
±[(V R/T)(maxT)(VR)]. Where, VR/T is the VR temperature coefficient, maxT is the maximum difference in temperature from the reference point of 25˚C to T
MIN or TMAX, and VR is the reverse breakdown voltage. The total over-temperature tolerance for the different grades in the industrial temperature range where maxT
= 65˚C is shown below:
A-grade: ±0.425% = ±0.1% ±50 ppm/˚C x 65˚C
B-grade: ±0.525% = ±0.2% ±50 ppm/˚C x 65˚C
C-grade: ±0.825% = ±0.5% ±50 ppm/˚C x 65˚C
Therefore, as an example, the A-grade LM4050-2.5 has an over-temperature Reverse Breakdown Voltage tolerance of ±2.5V x 0.425% = ±11 mV.
Note 8: Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change must be taken into
account separately.
7 www.national.com

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LM4050AIM3-2.5

Precision Micropower Shunt Voltage Reference

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