SPX1431N [SIPEX]
Precision Adjustable Shunt Regulator; 精密可调并联稳压器
| 型号： | SPX1431N |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Precision Adjustable Shunt Regulator |
| 文件： | 总12页 (文件大小：103K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX1431
Precision Adjustable Shunt Regulator
FEATURES
APPLICATIONS
■ Trimmed Bandgap Reference to 0.4%
■ Wide Operating Current 1mA to 150mA
■ Battery Operating Equipment
■ Adjustable Supplies
■ Extended Temperature Range:
-55°C to 125°C
■ Low Temperature Coefficient 30 ppm/°C
■ Switching Power Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
■ Offered in TO-92, SOIC, SOT-89,
SOT-23-5
■ Improved Replacement in Performance for
LT1431
■ Low Cost Solution
DESCRIPTION
The SPX1431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate
bandgap reference. The SPX1431 acts as an open-loop error amplifier with a 2.5V temperature
compensation reference. The SPX1431's thermal stability, wide operating current (150mA)
and temperature range (-55°C to 125°C) makes it suitable for a variety of applications that
require a low cost, high performance solution. SPX1431 tolerance of 0.4% 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 manufacturer's assembly lines and contributes a significant cost
savings.
The output voltage may be adjusted to any value between VREF and 36 volts with two external
resistors. The SPX1431 is available in TO-92, SOIC-8, SOT-89, and SOT-23-5 packages.
BLOCK DIAGRAM
Cathode (K)
Reference
(R)
+
-
2.5V
Anode (A)
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED CONDITIONS
Cathode-Anode Reverse Breakdown VKA ....................................... 37V
Anode-Cathode Forward Current, (<10ms) IAK ................................. 1A
Operating Cathode Current IKA .................................................. 150mA
Reference Input Current IREF ........................................................ 10mA
Continuous Power Dissipation at 25°C PD
PARAMETER
SYMBOL
VKA
RATING
VREF to 36
10
UNIT
V
Cathode Voltage
Cathode Current
TO-92 ..................................................................... 775mW
SOT-23 .................................................................. 200 mW
SOIC-8 .................................................................... 750mW
SOT-89 ................................................................. 1000mW
IK
mA
Junction Temperature TJ ........................................................... 150 °C
Storage Temperature TSTG .............................................. -65 to 150 °C
Lead Temperature (Soldering 10 sec.) TL .................................. 300°C
TYPICAL THERMAL RESISTANCES
PACKAGE
TO-92
0JA
0JC
TYPICAL DERATING
6.3 mW/°C
NOTE: Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
160°C/W 80°C/W
575°C/W 150°C/W
175°C/W 45°C/W
110°C/W 8°C/W
SOT-23
SOIC-8
SOT-89
1.7 mW/°C
5.7 mW/°C
9.1mW/C°
Typical deratings of the thermal resistances are given for ambient
temperature >25°C.
ELECTRICAL CHARACTERISTICS
Electrical characteristics at 25°C IK = 10mA VK = VREF, unless otherwise specified.
PARAMETER
SPX1431
SYMBOL FIGURE
CONDITIONS
MIN
TYP
MAX
UNITS
Reference Voltage
VREF
TC
2
2
2.490
2.465
2.500
2.510
2.535
V
V
TJ = 0°C to 105°C
∆VREF withTemp.*
2
3
0.07
-1.1
0.20
mV/°C
Ratio of Change in VREF
to Cathode Voltage
∆ VREF
∆VK
Vk = 3V to 36V
-2.0
mV/V
Reference Input Current
IREF Temp Deviation
Min IK for Regulation
Off State Leakage
IREF
3
3
2
4
0.7
0.4
1.9
1.2
1
µA
µA
mA
nA
∆IREF
IK(MIN)
IK(OFF)
TJ = 0°C to 105°C
0.4
VREF = 0V,
VKA = 36V
0.04
250
Dynamic Output
Impedance
ZKA
2
ƒz ≤ 1kHz
IK = 1 to 150mA
0.15
0.5
Ω
Operating Range (TJ ) = - 55°C to 125°C.
* See appropiate test circuit (Figure 2)
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
2
CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
mV
0
ppm
0
%
0
∆
VREF (mV)
∆
VREF
•
TC in mV/°C =
∆
TA
∆
T
∆
VREF
x 100
x 106
-10
(
∆
∆
VREF at 25°C
)
)
•
TC in %/°C =
5000
0.5
∆
TA
∆VREF
(
VREF at 25°C
•
TC in ppm/°C =
0
15
30
45
60
75
90
105
∆
TA
Junction Temperature (°C)
0.07 mV/°C
0.003 %/°C
27 ppm/°C
Figure 1. VREF VS Temperature.
TEST CIRCUITS
VIN
VKA
=
VREF
VIN
VKA
VIN
VKA
IK (OFF)
R1
IK
IREF
IK
IREF
(VREF
)
R2
Figure 2. Test Circuit for VKA = VREF
Figure 3. Test Circuit for VKA > VREF
Figure 4. Test Circuit for IKOFF
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
150
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
125
100
75
V
= V
REF
KA
V
K
= V
REF
KA
= 10mA
0°C to 105°C
I
50
25
0
-25
-50
-75
-100
-2
-1
0
1
2
3
-60
-30
0
T Ambient Temperature (°C)
A
30
60
90
120
V
KA
Cathode Voltage (V)
Figure 5. High Current Operating Characteristics
Figure 6. Reference Voltage VS Ambient Tempetature
900
800
3.0
V
KA
= V
REF
0° to 105°C
700
600
500
400
300
200
100
0
R1 = 10kΩ
R2 = ∞
K
2.5
I
= 10mA
2.0
1.5
1.0
0.5
0
105°C
25°C
-0°C
-100
-200
-60
-30
0
30
60
90
120
-1.0
0
1.0
2.0
3.0
T
Ambient Temperature (°C)
A
V
KA
Cathode Voltage (V)
Figure 8. Reference Input Current VS Ambient
Temperature
Figure 7. Low Current Operating Characteristics
70
60
50
40
30
20
0
-10
0°C
-20
-30
-40
25°C
75°C
125°C
I
= 10mA
KA
VKA = VREF
10 IK = 10mA
TA = 25°C
0
10
-50
0
100
1K
10K
100K
3
6
9
12 15 18 21 24 27 30
V
KA
Cathode Voltage (V)
f Frequency (Hz)
Figure 10. Noise Voltage VS Frequency
Figure 9. Reference Voltage Line Regulation VS
Cathode Voltage and TAMBIENT
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
REF LEVEL
60.000dB
0.0deg
/DIV
10.000dB
45.000deg
MARKER 19 422 611.000Hz
MAG (A/R) -0.125dB
MARKER 19 422 611.000Hz
0.150
0.125
0.100
0.075
0.050
0.025
0.0
V
= V
REF
KA
PHASE (A/R)
46.717deg
I
= 1 to 100mA
K
f≤1kHz
PHASE
GAIN
-60
-30
0
30
60
90
120
10
100
1K
10K
100K
1M
10M
T
Free Air Temperature
A
START 10.000Hz
STOP 50 000 000.000Hz
Figure 12. Small Signal Gain and Phase VS Frequency;
IK = 10mA, TA = 25°C
Figure 11. Low Frequency Dynamic Output Impedance
VS TAMBIENT
VOUT
V
IN
230Ω
IK
15kΩ
9µF
V
OUT
VIN
8.25kΩ
GND
Figure 13. Test Circuit for Gain and Phase Frequency
Response
Figure 14. Frequency = 100kHz, IK = 10mA, TA = 25°C
100
VIN
A: V = V
KA
REF
90
80
70
60
50
40
30
20
10
0
B: V = 5V at I =10mA
250Ω
KA
K
C: V =10V at I =10mA
KA
K
D: V =15V at I =10mA
KA
K
VOUT
C
IK
STABLE
STABLE
fp = 100kHz
A
50Ω
T
A = 25°C
B
D
100 101 102
103 104 105 106 107
GND
C
L
Load Capacitance (pF)
Figure 16. Stability Boundary Conditions
Figure 15. Test Circuit for Pulse Response
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
5
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
100
150 Ω
TA = 25 °C
IK
=
1mA to 100mA
IK
10
1.0
R
CL
10kΩ
0.1
0.01
1K
10K
100K
1M
10M
f - Frequency (Hz)
Figure 18. Dynamic Output Impedance TA = 25°C,
Figure 17. Test Circuit for Stability
IK = 1 to 100mA
100
R3
V
V
IN
OUT
10
R1
0.1%
V
V
= 36V
KA
= 0V
REF
1
V
REF
SPX1431
0.1
R2
0.1%
0.01
-50
0
50
100
150
T
Ambient Temperature (°C)
A
Figure 19. Off State Leakage
Figure 20. Shunt Regulator VOUT = (1+R1/R2)VREF
V
V
OUT
IN
I
SINK
Q1
R3
R2
R1
0.1%
Opto Isolator
R3 sets feedback gain,
C1 provides feedback
compensation
Isolated
Feedback
SPX1431
C1
+
C2
R1
0.1%
SPX1431
R2
0.1%
V
RTN
OUT
Figure 22. Reference Amplifier for Isolated Feedback in
Off-Line DC-DC Converters
Figure 21. Constant Current, Sink, ISINK = VREF/R1
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
6
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
V
IN
V
IN
V
OUT
R5
R1
0.1%
R4
R3
R2
0.1%
Q1
R3
R1
0.1%
C1
V
OUT
SPX1431
SPX1431
R2
0.1%
Figure 24. High Current Shunt Regulator
VOUT = (1+R1/R2)VREF
Figure 23. Precision High Current Series Regulator
VOUT = (1+R1/R2)VREF
V
CC
R2
* Resistor values are chosen such that the effect to
REF is negligible.
I
V
OUT
R1
V
IN
SPX1431
Figure 25. Single Supply Comparator with Temperature
Compensated Threshold. VIN threshold = 2.5V
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
7
PACKAGES
SOT-23-5 (M5)
SOT-89 (M1)
8-Pin Surface Mount (S)
TO-92 (N)
REF
ANODE
1
2
3
5
4
REF
1
2
3
4
8
7
6
5
CATHODE
ANODE
ANODE
N/C
1
3
2
ANODE
ANODE
N/C
3
1
2
CATHODE
REF
REF
CATHODE
N/C
N/C CATHODE
ANODE
ANODE
Top View
Top View
Bottom View
Top View
PACKAGE:
8 PIN PLASTIC
SMALL OUTLINE (SOIC)
(NARROW)
4.0 (0.158)
3.8 (0.150)
5.2 (0.205)
4.6 (0.181)
6.2 (0.244)
5.8 (0.228)
Pin 1
1.27 (0.50)
BSC
1.75 (0.069)
1.35 (0.053)
0.78 (0.031)
0.61 (0.024)
0.77 (0.030)
0.64 (0.025)
°
45
5.0 (0.197)
4.8 (0.188)
0.37 (0.015)
BSC
°
(4 PLCS)
7
°
3
-6°
0.56 (0.022)
0.49 (0.019)
0.22 (0.009)
0.19 (0.007)
°
7
(4 PLCS)
0.45 (0.018)
0.35 (0.014)
0.20 (0.008)
0.10 (0.004)
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
8
PACKAGE: 5 Lead SOT23
C
L
b
e
E
e1
D
C
L
a
0.20
C
L
DATUM 'A
'
A2
A
C
E1
L
2
A
A1
A
.10
MIN
0.90
MAX
1.45
SYMBOL
A
0.00
0.90
0.25
0.09
2.80
2.60
1.50
0.35
0.15
1.30
0.50
0.20
3.10
3.00
1.75
0.55
A1
A2
b
C
D
E
E1
L
e
0.95ref
1.90ref
e1
a
O
O
0
10
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
9
PACKAGE:
3 Lead SOT-89
C
A
C
N
P
2
1
3
K
B
F
D
G
-T-
STYLE 1
STYLE 3
DIM
MILLIMETERS
INCHES
MIN
4.40
2.29
140
0.36
1.62
0.44
150 BSC
0.35
0.80
MAX
4.60
2.60
160
0.48
1.80
0.53
MIN
MAX
PIN 1. BASE
PIN 1. GATE
2. ANODE
A
B
0.174
0.091
0.056
0.015
0.064
0.018
0.059 BSC
0.014
0.032
0.181
0.102
0.062
0.018
0.070
0.020
2. COLLECTOR
3. EMITTER
3. CATHODE
C
D
E
F
G
J
STYLE 2
STYLE 4
PIN 1. ANODE
2. CATHODE
PIN 1. DRAIN
2. GATE
0.44
1.04
0.017
0.040
K
L
3. NO CONNECTION
3. SOURCE
300 BSC
0.118 BSC
N
P
2.04
3.94
2.28
4.25
0.081
0.156
0.089
0.167
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
10
PACKAGE: TO-92
0.090 (2.286) Radius typ.
2
1
3
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
10° typ.
BOTTOM VIEW
0.085 (2.159) Diameter
0.185 (4.699)
0.045 (1.143)
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.090 (2.286) typ.
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diameter
0.500 (12.70) Min.
0.016 (0.406)
0.014 (0.356)
0.0155 (0.3937)
0.0145 (0.3683)
0.055 (1.397)
0.045 (1.143)
0.105 (2.667)
0.095 (2.413)
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
11
ORDERING INFORMATION
PART NUMBER
ACCURACY
OUTPUT VOLTAGE
PACKAGES
SPX1431M5 ......................... 0.4%.....................2.5V ............................ 5-Pin SOT-23
SPX1431M1 ......................... 0.4%.....................2.5V ............................ 3-Pin SOT-89
SPX1431S ............................ 0.4%.....................2.5V ................................ 8-Pin SOIC
SPX1431N............................ 0.4%.....................2.5V .............................. 3-Pin TO-92
Co rp o ra tio n
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: sales@sipex.com
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Rev. 08/13/02
SPX1431 Precision Adjustable Shunt Regulator
© Copyright 2002 Sipex Corporation
12
相关型号：
SPX1431N-L
Two Terminal Voltage Reference, 1 Output, 2.49V, Trim/Adjustable, PBCY3, LEAD FREE, TO-92, 3 PIN
SIPEX
SPX1431N-L/TR
Two Terminal Voltage Reference, 1 Output, 2.49V, Trim/Adjustable, PBCY3, LEAD FREE, TO-92, 3 PIN
SIPEX
SPX1432AM
Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, BIPolar, PDSO3, TO-236AB, SOT-23, 3 PIN
EXAR
SPX1432AM-L
Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, PDSO3, SOT-23, 3 PIN
SIPEX
©2020 ICPDF网 联系我们和版权申明