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PDF SPX431 Data sheet ( Hoja de datos )
| Número de pieza | SPX431 | |
| Descripción | Precision Adjustable Shunt Regulator | |
| Fabricantes | Sipexoration | |
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SPX431
Precision Adjustable Shunt Regulator
FEATURES
• Trimmed Bandgap to 0.5%
• Wide Operating Current..........................1mA to 150mA
• Extended Temperature Range....................0°C to 105°C
• Low Temperature Coefficient ............................30 ppm/°C
• Offered in TO-92, SOIC, SOT-89, SOT-23-5
• Improved Replacement in Performance for TL431
• Low Cost Solution
APPLICATIONS
• Battery Operating Equipments
• Adjustable Supplies
• Switching Power Supplies
• Error Amplifiers
• Single Supply Amplifier
• Monitors / VCR / TV
• Personal Computers
PRODUCT DESCRIPTION
The SPX431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 0.5% bandgap reference. SPX431 acts as an
open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431 thermal stability, wide operating current
(150mA) and temperature range (0°C to 105°C) makes it suitable for all variety of application that are looking for a low cost solution
with high performance. SPX431 tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to
virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a significant cost
savings.
The output voltage may be adjusted to any value between VREF and 36 volts with two external resistors. The SPX431 is operating an
extended temperature range of 0°C to 105°C. The SPX431 is available in TO-92, SO-8, SOT-89, and SOT-23-5 packages.
PIN CONFIGURATIONS
8-Pin Surface Mount (S)
CATHODE
ANODE
ANODE
N/C
18
27
SPX431
36
45
Top View
REF
ANODE
ANODE
N/C
SOT-23-5 (M5)
REF ANODE
54
SPX431
123
N/C N/C CATHODE
Top View
SOT-89 (M1)
SPX431
1 23
REF CATHODE
ANODE
Top View
TO-92 (N)
1 23
REF
ANODE
Bottom View
CATHODE
Rev. 10/30/00
1 page  
TYPICAL PERFORMANCE CURVES
Reference Input Current
3.0
R1 = 10 k Ω
R2 = ∞
2.5 IK = 10 mA
2.0
1.5
1.0
0.5
0
-60
-30
0
30 60 90 120
TA - Ambient Temperature ( °C)
Figure 6
Noise Voltage
70
60
50
40
30
20
10
0
10
TVIKAK=A=1=205Vm°RCAEF
100
1k
f - Frequency (Hz)
Figure 8
10 k
100 k
SPX431
Reference Voltage Line Regulation
0
-10
0 °C
-20
25 °C
75 °C
-30
105 °C
-40
-50
0
0.150
0.125
3 6 9 12 15 18 21 24 27
VKA - Cathode Voltage (V)
Figure 7
Low Frequency Dynamic Output Impedance
30
IVKKAA==1VtRoEF100 mA
f < 1 kHz
0.100
0.075
0.050
0.025
0.0
-60
-30
0 30 60
TA - Free Air Temperature
Figure 9
90
120
Rev. 10/30/00
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SPX431.PDF ] | |
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