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PDF SPX2431L Data sheet ( Hoja de datos )
| Número de pieza | SPX2431L | |
| Descripción | Precision Adjustable Shunt Regulator | |
| Fabricantes | Sipex Corporation | |
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®
SPX2431L
Precision Adjustable Shunt Regulator
FEATURES
■ Trimmed Bandgap to 0.5% and 1.0%
■ Wide Operating Current 160µA to 100mA
■ Extended Temperature Range:
0°C to 105°C
■ Low Temperature Coefficient 30 ppm/°C
■ Offered in TO-92, SOIC, SOT-23-3
■ Replacement for TL431 and AS2431L
■ Low Cost Solution
APPLICATIONS
■ Battery Operating Equipment
■ Adjustable Supplies
■ Switching Power Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
DESCRIPTION
The SPX2431L is a 3-terminal adjustable shunt voltage regulator providing a highly accurate
bandgap reference (0.5%) and extremely low operating current (100µA). The SPX2431L acts
as an open-loop error amplifier with a 2.5V temperature compensated reference. The
SPX2431L's thermal stability, wide operating current (100mA) and temperature range (0°C to
150°C) makes it suitable for a variety of applications. SPX2431LA tolerance of 0.5% is proven
to be sufficient to overcome all the other errors in the system to virtually eliminate the need for
trimming in the power supply manufacturer's assembly lines and contributes a significant cost
savings.
In the standard shunt configuration, the combination of a low temperature coefficient, sharp
turn on characteristics, low output impedance, and programmable output voltage makes this
precision reference an excellent error amplifier. The SPX2431L is available in TO-92, SOIC-8,
and SOT-23-3 package.
BLOCK DIAGRAM
Cathode (K)
Reference
(R)
Rev. 08/13/02
2.5V
+
-
Anode (A)
SPX2431L Precision Adjustable Shunt Regulator
1
© Copyright 2002 Sipex Corporation
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
0.150
0.125
0.100
VKA = VREF
IK = 160µ to 100mA
f≤1kHz
0.075
0.050
0.025
0.0
-60
-30 0 30 60 90
TA Free Air Temperature
120
Figure 11. Low Frequency Dynamic Output Impedance
VS TAMBIENT
REF LEVEL
60.000dB
0.0deg
60dB
/DIV
10.000dB
45.000deg
50dB
40dB
30dB
20dB
10dB
0dB
-10dB
-20dB
-30dB
-40dB
10
100
START 10.000Hz
1K
10K
MARKER 3 039 642.400Hz
MAG (A/R)
0.057dB
MARKER 3 039 6642.400Hz
PHASE (A/R) 81.770deg
PHASE
GAIN
100K 1M 10M
STOP 50 000 000.000Hz
215°
180°
135°
90°
45°
0°
-45°
-90°
-135°
-180°
-215°
Figure 12. Small Signal Gain and Phase VS Frequency;
IK = 10mA, TA = 25°C
9µF 15kΩ
IK
VIN
8.25kΩ
VOUT
230Ω
GND
VIN
VOUT
Figure 13. Test Circuit for Gain and Phase Frequency
Response
Figure 14. Frequency = 100kHz, IK = 10mA, TA = 25°C
VIN
250Ω
fp = 100kHz
50Ω
VOUT
IK
Figure 15. Test Circuit for Pulse Response
GND
100
90
A: VKA = VREF
B: VKA= 5V at IK=10mA
80
C: VKA=10V at IK=10mA
D: VKA=15V at IK=10mA
70
60
C
50
40
STABLE
A
30
STABLE
20
10
0
100
TA = 25°C
B
D
101 102 103 104 105 106
CL Load Capacitance (pF)
107
Figure 16. Stability Boundary Conditions
Rev. 08/13/02
SPX2431L Precision Adjustable Shunt Regulator
5
© Copyright 2002 Sipex Corporation
5 Page 
ORDERING INFORMATION
PART NUMBER
ACC
OUTPUT VOLTAGE
PACKAGES
SPX2431LAM ...................... 0.5% .............. 2.503V ................................ 3-Pin SOT-23
SPX2431LAS ...................... 0.5% .............. 2.503V .................................... 8-Pin SOIC
SPX2431LAN ...................... 0.5% .............. 2.503V .................................. 3-Pin TO-92
SPX2431LM ........................ 1.0% .............. 2.495V ................................ 3-Pin SOT-23
SPX2431LS ......................... 1.0% .............. 2.495V .................................... 8-Pin SOIC
SPX2431LN ......................... 1.0% .............. 2.495V .................................. 3-Pin TO-92
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: [email protected]
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Rev. 08/13/02
SPX2431L Precision Adjustable Shunt Regulator
11
© Copyright 2002 Sipex Corporation
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SPX2431L.PDF ] | |
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