SPX431LN [SIPEX]
Low Voltage Precision Adjustable Shunt Regulator; 低电压精密可调并联稳压器
| 型号： | SPX431LN |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Low Voltage Precision Adjustable Shunt Regulator |
| 文件： | 总8页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPX431L
Low Voltage Precision
Adjustable Shunt Regulator
FEATURES
APPLICATIONS
• Battery Operating Equipment
• Adjustable Supplies
• Tight Tolerance.................................................. 0.5% @ 10mA
• Wide Operating Range..................................... 1mA to 100mA
• Low Extended Temperature Range ....................0°C to 105°C
• Low Temperature Coefficient .................................30 ppm/°C
• Offered in TO-92, SOT-89, SOT-23-3 and SO-8
• Improved replacement in performance of AS431 & TL431
• Low Cost Solution
• Switching Power Supplies
• Error Amplifiers
• Single Supply Amplifier
• Monitors/ VCR/ TV
• Personal Computers
PRODUCT DESCRIPTION
The SPX431L is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate bandgap reference. SPX431L acts as an
open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431L thermal stability, wide operating current
(100mA) and temperature range (0°C to 105°C) makes it suitable for all variety of applications that are looking for a low cost solution
with high performance.
The output voltage may be adjusted to any value between VREF and 20V with 2 external resistors. The SPX431L is operating in full
industrial temperature range of 0°C to 105°C. The SPX431L is available in TO-92, SOT-89, SOT-23-3 and SO-8 packages.
PIN CONNECTIONS
CATHODE (K)
8-Pin Surface Mount (S)
TO-92 (N)
1
2
3
1
2
3
4
8
7
6
5
REF
CATHODE
ANODE
REFERENCE
(R)
ANODE
ANODE
+
-
SPX431L
ANODE
N/C
REF
CATHODE
ANODE
N/C
Bottom View
2.5V
Top View
ANODE (A)
SOT-23-3 (M)
SOT-89 (M1)
SPX431L
ANODE
1
SPX431L
2
1
3
2
3
CATHODE
REF
N/C
Top View
CATHODE
ANODE
Top View
Rev. 10/30/00
SPX431L
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
VKA
IAK
Rating
30
Units
V
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
Reference Input Current
Continuous Power Dissipation at 25°C
TO-92
1
A
IKA
150
10
mA
mA
IREF
PD
775
200
mW
mW
mW
mW
°C
°C
°C
SOT-23
750
SOIC-8
1000
SOT-89
Junction Temperature
Storage Temperature
Lead Temperature (Soldering 10 sec.)
TJ
TSTG
TL
150
-65 to +150
300
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 conditions for extended periods may affect reliability.
RECOMMENDED CONDITIONS
TYPICAL THERMAL RESISTANCE
Parameter
Symbol
VKA
Rating
VREF to 20
10
Unit
V
mA
Package Type
TO-92
Typical Derating
6.3 mW/°C
θJA
θJC
Cathode Voltage
Cathode Current
160°C/W
80°C/W
IK
SOT-23
SOIC-8
575°C/W 150°C/W
1.7 mW/°C
175°C/W
110°C/W
45°C/W
8°C/W
5.7 mW/°C
9.1 mW/°C
SOT-89
ELECTRICAL CHARACTERISTICS at 25°C IK @ 10mA VK=VREF , unless otherwise specified.
Parameter
Symbol
Test Conditions
SPX431LA
SPX431L
SPX431LC
Unit
V
Min
Typ
Max
2.515
Min
2.470
Typ
Max
Min
Typ Max
Reference
VREF
2.490
2.503
2.495 2.520 2.445 2.495 2.545
TA = 25°C TC = 1
Voltage
Ratio of Change
in VREF to
V
REF to 10V
-2.7
-2
-1.0
-0.4
-2.7
-2
-1.0
-0.4
-2.7
-2
-1.0
-0.4
mV/V
∆ VREF
∆VK
10V to 20V TC =
0.3
4
0.3
4
0.3
4
Cathode Voltage
Reference Input
Current
2
IREF
TC = 2
0.7
0.4
0.7
0.4
0.7
0.4
µA
µA
mA
µA
IREF Temp
Over Temp. TC =
1.2
1
1.2
1
1.2
1
∆IREF
IK(MIN)
IK(OFF)
Deviation
2
Min IK for
TC = 1
0.4
0.4
0.4
Regulation
Off State Leakage
VREF = 0V,
0.04
1
0.04
1
0.04
1
V
3
KA = 20V TC =
Dynamic Output
Impedance
TC = Test Circuit
ZKA
TC = 1
0.15
0.5
0.15
0.5
0.15
0.5
Ω
Rev. 10/30/00
SPX431L
*CALCULATING AVERAGE TEMPERATURE COEFFICEINT (TC)
0
0
0
∆
VREF (mV)
∆
TA
∆
VREF
TC in mV/°C =
TC in mV/°C =
TC in ppm/°C =
∆T
∆
VREF
-10
x 100
(∆V )
REF at 25°C
TA
5000
0.5
∆
∆
VREF
V at 25°C
REF
x 106
∆
( )
0
15
30
45
60
75
90
105
∆
TA
0.07 mV/°C
0.003 %/°C
27 ppm/°C
TEST CIRCUITS
VIN
VKA = VREF
VIN
VKA
VIN
VKA
IREF
IK
IK
IK (OFF)
R
1
IREF
(VREF
)
R
2
1G-40
1G-38
1G-39
TEST CIRCUIT 1
TEST CIRCUIT 2
TEST CIRCUIT 3
Rev. 10/30/00
SPX431L
TYPICAL PERFORMANCE CURVES
Low Current Operating Characteristics
High Current Operating Characteristics
900
150
125
100
75
VKA = VREF
VKA = VREF
800
Temperature Range: - 0°C to 105 °C
Temperature Range: - 0°C to 105 °C
700
600
500
400
50
25
105 °C
25 °C
-0 °C
300
200
100
0
-25
-50
-75
-100
0
-100
-200
-2
-1
0
1
2
3
VKA - Cathode Voltage (V)
Figure 3
-1.0
0
1.0
2.0
3.0
VKA - Cathode Voltage (V)
Figure 2
Off State Leakage
Reference Voltage vs. Ambient Temperature
100
10
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
VKA = VREF
VKA = 36V
VREF = 0V
IK = 10 mA
VREF = 2.500 V at 25 °C
1
0.1
0.01
-60
-30
0
30
60
90
120
-60
-30
0
30
60
90
120
TA - Ambient Temperature ( °C)
Figure 4
TA - Ambient Temperature ( °C)
Figure 5
Rev. 10/30/00
SPX431L
TYPICAL PERFORMANCE CURVES
Reference Input Current
Reference Voltage Line Regulation
3.0
0
-10
-20
-30
R1 = 10 k
R2 =
IK = 10 mA
Ω
∞
2.5
2.0
1.5
1.0
0.5
0
0 °C
25 °C
75 °C
105 °C
-40
-50
0
3
6
9
12
15
18
21
24
27
30
VKA - Cathode Voltage (V)
Figure 7
-60
-30
0
30
60
90
120
TA - Ambient Temperature ( °C)
Figure 6
Noise Voltage
Low Frequency Dynamic Output Impedance
70
60
50
40
30
20
10
0
0.150
0.125
0.100
0.075
0.050
0.025
0.0
VKA = V
REF
IKA = 1 to 100 mA
f < 1 kHz
-60
-30
0
30
60
90
120
TA - Free Air Temperature
Figure 9
10
100
1 k
10 k
100 k
f - Frequency (Hz)
Figure 8
Rev. 10/30/00
SPX431L
TYPICAL PERFORMANCE CURVES
Dynamic Output Impedance
100
10
TA = 25 °C
IK = 1 to 100 mA
1.0
0.1
0.01
1 k
10 k
100 k
1 M
10 M
f - Frequency (Hz)
Figure 10
Small Signal Voltage Gain vs. Frequency
70
Temperature Range: -0°C to 105 °C
60
IK = 10 mA
50
40
30
20
10
0
OUT
230
Ω
IK
15 k
µ
9 F
8.25 k
GND
1 k
10 k
100 k
1 M
10 M
f - Frequency (Hz)
Figure 11
Rev. 10/30/00
SPX431L
TYPICAL PERFORMANCE CURVES
Pulse Response
6
INPUT
5
INPUT
MONITOR
220
Ω
4
OUT
3
OUTPUT
50
Ω
2
1
fP = 100 kHz
GND
0
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
µ
t - Time ( s)
Figure 12
Stability Boundary Conditions
100
90
80
70
60
50
40
30
20
10
0
A:
V
= VREF
KA
B:
C:
D:
V
= 5V at I = 10 mA
= 10V atKI = 10 mA
= 15V at IKK = 10 mA
KA
V
KA
V
KA
C
150
Ω
IK
STABILITY
REGION
CL
10 k
A
B
TA = 25 °C
D
100
101
102
103
104
105
106
107
CL - Load Capacitance (pF)
Figure 13
Rev. 10/30/00
SPX431L
ORDERING INFORMATION
Ordering No Precision Output Voltage
Packages
5 Lead SOT-23
5 Lead SOT-23
5 Lead SOT-23
3 Lead SOT-89
3 Lead SOT-89
3 Lead SOT-89
3 Lead TO-92
3 Lead TO-92
3 Lead TO-92
8 Lead SOIC
.
1%
0.5%
2%
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
SPX431LM
SPX431LAM
SPX431LCM
SPX431LM1
SPX431LAM1
SPX431LCM
SPX431LN
1%
0.5%
2%
1%
0.5%
2%
SPX431LAN
SPX431LCN
SPX431LS
1%
0.5%
2%
8 Lead SOIC
SPX431LAS
SPX431LCS
8 Lead SOIC
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described
hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 10/30/00
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