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PDF LM285 Data sheet ( Hoja de datos )
| Número de pieza | LM285 | |
| Descripción | MICROPOWER VOLTAGE REFERENCE DIODES | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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LM285, LM385B
Micropower Voltage
Reference Diodes
The LM285/LM385 series are micropower two−terminal bandgap
voltage regulator diodes. Designed to operate over a wide current
range of 10 mA to 20 mA, these devices feature exceptionally low
dynamic impedance, low noise and stable operation over time and
temperature. Tight voltage tolerances are achieved by on−chip
trimming. The large dynamic operating range enables these devices to
be used in applications with widely varying supplies with excellent
regulation. Extremely low operating current make these devices ideal
for micropower circuitry like portable instrumentation, regulators and
other analog circuitry where extended battery life is required.
The LM285/LM385 series are packaged in a low cost TO−226
plastic case and are available in two voltage versions of 1.235 V and
2.500 V as denoted by the device suffix (see Ordering Information
table). The LM285 is specified over a −40°C to +85°C temperature
range while the LM385 is rated from 0°C to +70°C.
The LM385 is also available in a surface mount plastic package in
voltages of 1.235 V and 2.500 V.
Features
• Operating Current from 10 mA to 20 mA
• 1.0%, 1.5%, 2.0% and 3.0% Initial Tolerance Grades
• Low Temperature Coefficient
• 1.0 W Dynamic Impedance
• Surface Mount Package Available
• Pb−Free Packages are Available
Cathode
360 k
Open
for 1.235 V
10 k
600 k 8.45 k
Open
for 2.5 V
74.3 k
425 k
600 k
600 k
500 W 100 k
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8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
y85−z
ALYW
G
1
N.C.
Cathode
Anode
TO−92
(TO−226)
Z SUFFIX
CASE 29
LMy85
Z−xxx
ALYWW G
G
xxx = 1.2 or 2.5
y = 2 or 3
z = 1 or 2
A = Assembly Location
L = Wafer Lot
Y = Year
W, WW = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
(Bottom View)
321
N.C. 1
N.C. 2
N.C. 3
Anode 4
8 Cathode
7 N.C.
6 N.C.
5 N.C.
Standard Application
1.5 V
Battery
+
−
3.3 k
1.235 V
LM385−1.2
Anode
Figure 1. Representative Schematic Diagram
© Semiconductor Components Industries, LLC, 2005
November, 2005 − Rev. 7
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
Publication Order Number:
LM285/D
1 page  
LM285, LM385B
100
10
1.0
0.1
0
TYPICAL PERFORMANCE CURVES FOR LM285−2.5/385−2.5/385B−2.5
TA = +85°C
+25 °C
−40 °C
0.5 1.0 1.5 2.0 2.5 3.0
V(BR), REVERSE VOLTAGE (V)
Figure 8. Reverse Characteristics
3.5
10
8.0
6.0
4.0
2.0
0
−2.0
0.01
TA = +85°C
+25 °C
−40 °C
0.1 1.0 10
IR, REVERSE CURRENT (mA)
Figure 9. Reverse Characteristics
100
1.2
1.0
TA = −40°C
0.8
0.6
+85 °C
0.4
+25 °C
0.2
2.520
2.510
2.500
2.490
2.480
2.470
2.460
IR = 100 mA
0
0.01
0.1
1.0
10
2.450
100 −50 −25 0 25 50 75 100 125
IF , FORWARD CURRENT (mA)
TA , AMBIENT TEMPERATURE (°C)
Figure 10. Forward Characteristics
Figure 11. Temperature Drift
1500
1250
1000
750
500
250
0
10
100 1.0 K 10 K
f, FREQUENCY (Hz)
Figure 12. Noise Voltage
100 k
3.00
2.50
2.00
Input 100 k
1.50 Output
1.00 DUT
0.50
0
10
5.0
0
0 0.1 0.2 0.3 0.6 0.7 0.8 0.9 1.0 1.1
t, TIME (ms)
Figure 13. Response Time
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LM285.PDF ] | |
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