參數(shù)資料
型號(hào)： LM185-1.2MW8
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, UUC
封裝： WAFER
文件頁(yè)數(shù)： 10/16頁(yè)
文件大小： 375K
代理商： LM185-1.2MW8
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
Reverse Current
30 mA
Forward Current
10 mA
Operating Temperature Range (Note 3)
LM185-1.2
55C to +125C
LM285-1.2
40C to +85C
LM385-1.2
0C to 70C
Storage Temperature
55C to +150C
Soldering Information
TO-92 package: 10 sec.
260C
TO-46 package:10 sec.
300C
SO and SOT Pkg.
Vapor phase (60 sec.)
215C
Infrared (15 sec.)
220C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics (Note 4)
LM185-1.2
LM185BX-1.2
LM385B-1.2
LM185BY-1.2
LM385BX-1.2
LM385-1.2
LM285-1.2
LM385BY-1.2
Units
Parameter
Conditions
Typ
LM285BX-1.2
(Limit)
LM285BY-1.2
Tested
Design
Tested
Design
Tested
Design
Limit
(Notes
5, 8)
(Note 6)
(Note 5)
(Note 6)
(Note 5)
(Note 6)
Reverse Breakdown
TA = 25C,
1.235
1.223
1.205
V(Min)
Voltage
10 A
≤ I
R ≤ 20 mA
1.247
1.260
V(Max)
Minimum Operating
8
10
20
15
20
15
20
A
Current
LM385M3-1.2
10
15
(Max)
Reverse Breakdown
10 A
≤ I
R ≤ 1mA
1
1.5
1
1.5
1
1.5
mV
Voltage Change
(Max)
with Current
1 mA
≤ I
R ≤ 20 mA
10
20
20
25
20
25
mV
(Max)
Reverse Dynamic
IR = 100 A, f = 20 Hz
1
Impedance
Wideband Noise
IR = 100 A,
60
V
(rms)
10 Hz
≤ f ≤ 10 kHz
Long Term Stability
IR = 100 A, T = 1000 Hr,
20
ppm
TA = 25C ±0.1C
Average Temperature
IR = 100 A
Coefficient (Note 7)
X Suffix
30
ppm/C
Y Suffix
50
ppm/C
All Others
150
ppm/C
(Max)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.
Note 2: Refer to RETS185H-1.2 for military specifications.
Note 3: For elevated temperature operation, Tj max is:
LM185
150C
LM285
125C
LM385
100C
Thermal Resistance
TO-92
TO-46
SO-8
SOT23
θ
JA (junction to ambient)
180C/W (0.4" leads)
440C/W
165C/W
283C/W
170C/W (0.125" leads)
θ
JC (junction to case)
N/A
80C/W
N/A
Note 4: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25C.
LM185-1.2/LM285-1.2/LM385-1.2
www.national.com
3
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