SPX1431M5-L/TR [SIPEX]
Precision Adjustable Shunt Regulator; 精密可调并联稳压器型号: | SPX1431M5-L/TR |
厂家: | SIPEX CORPORATION |
描述: | Precision Adjustable Shunt Regulator |
文件: | 总12页 (文件大小:718K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SPX1431
Precision Adjustable Shunt Regulator
FEATURES
■ Trimmed Bandgap Reference to 0.4%
■ Wide Operating Current 1mA to 150mA
■ Extended Temperature Range:
-55°C to 125°C
CATHODE
1
2
3
4
8
7
6
5
REF
SPX1431
ANODE
ANODE
ANODE
N/C
8 Pin nSOIC
ANODE
N/C
■ Low Temperature Coefficient 30 ppm/°C
Available ickaging
■ Offered in TO-92, SOIC, SOT-89,
SOT-23-5
■ Improved Replacement in Performance for
Now Available in Lead Free Packaging
LT1431
■ Low Cost Solution
APPLICATIONS
■ Battery Operating Equipment
■ Adjustable Supplies
■ Switching Power Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
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)
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢀ
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
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 V K= V REF, 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
6VREFwithTemp.*
2
0.07
-1.1
0.20
mV/ °C
Ratio of Change in VREF
to Cathode Voltage
6 VREF
6VK
3
Vk= 3V to 36V
-2.0
mV/V
Reference Input Current
IREFTemp Deviation
Min IKfor Regulation
Off State Leakage
IREF
6IREF
I K(MIN)
IK(OFF)
3
3
2
4
0.7
0.4
1.9
1.2
1
µA
µA
TJ= 0 °C to 105°C
0.4
mA
nA
VREF= 0V,
VKA= 36V
0.04
250
Dynamic Output
Impedance
ZKA
2
ƒz )1kHz
IK= 1 to 150mA
0.15
0.5
1
Operating Range (TJ ) = - 55°C to 125°C.
* See appropiate test circuit (Figure 2)
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
2
CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
mV
0
ppm
0
%
0
6
VREF(mV)
6
VREF
•
TC in mV/°C =
6
TA
6
T
6
VREF
x 100
x 106
-10
(
6
6
VREF at 25°C
)
)
•
TC in %/°C =
5000
0.5
6
TA
6VREF
(
VREF at 25°C
•
TC in ppm/°C =
0
15
30
45
60
75
90
105
6
TA
Junction Temperature (°C)
0.07 mV/°C
0.003 %/°C
27 ppm/°C
Figure 1. VREFVS 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= V REF
Figure 3. Test Circuit for VKA> V REF
Figure 4. Test Circuit for IKOFF
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
150
125
100
75
2.53
V
= V
KA
REF
V
K
= V
KA
REF
= 10mA
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
0°C to 105°C
I
50
25
0
-25
-50
-75
-100
-2
-1
0
1
2
3
-60
-30 30
T Ambient Temperature (°C)
A
0
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
= V
KA
REF
0°to 105 °C
700
600
500
400
300
200
100
0
R1 = 10k1
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
A
Ambient Temperature (°C)
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= V REF
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
Cathode Voltage (V)
KA
f Frequency (Hz)
Figure 10. Noise Voltage VS Frequency
Figure 9. Reference Voltage Line Regulation VS
Cathode Voltage and TAMBIENT
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS
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
KA
REF
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, T A= 25 °C
Figure 11. Low Frequency Dynamic Output Impedance
VS TAMBIENT
VOUT
V
IN
2301
IK
15k1
9µF
V
OUT
VIN
8.25k1
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
2501
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
501
T
A = 25°C
B
D
100 101 102
103 104 105 106 107
GND
C
Load Capacitance (pF)
L
Figure 16. Stability Boundary Conditions
Figure 15. Test Circuit for Pulse Response
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢁ
TYPICAL PERFORMANCE CHARACTERISTICS
100
1
5
01
TA = 25 °C
IK
=
1mA to 100mA
I
K
10
1.0
R
C
L
1
0
k1
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
10
R3
V
V
IN
OUT
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
A
Ambient Temperature (°C)
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= V REF/R1
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢂ
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
V
V
OUT
IN
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)V REF
Figure 23. Precision High Current Series Regulator
VOUT= (1+R1/R2)V REF
V
CC
R2
* Resistor values are chosen such that the effect to
IREFis negligible .
V
OUT
R1
V
IN
SPX1431
Figure 25. Single Supply Comparator with Temperature
Compensated Threshold. VINthreshold = 2.5V
PACKAGE PINOUTS
S
O
T-23-5(M5)
S
O
T-89(M1)
8-PinSurfaceMount(S)
TO-92(N)
R
E
F
A
N
O
D
E
1
2
3
5
1
4
3
R
E
F
1
2
3
4
8
7
6
5
C
A
A
N
T
H
OD
O
E
D
E
1
3
2
AN
O
D
E
2
A
N
O
D
E
A
N
OD
E
C
A
T
H
O
D
E
R
E
F
R
E
F
C
A
T
H
O
D
E
N/C
N/C CA
T
H
O
D
E
A OD
N
E
A
N DE
O
N/C
N/C
TopView
TopView
BottomView
TopView
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
7
Package: 8 Pin nSOic
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢃ
Package: 5 Pin SOT-23
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢄ
Package: 3 Pin SOT-89
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢀ0
Package: 3 Pin TO-92
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢀꢀ
ORDeRing inFORMaTiOn
RoHS
Pꢂrt numbꢁr
Package
codꢁ
Stꢂtus Pack Quantity
SPXꢀ43ꢀMꢀ
SOT-ꢃꢄ-3
SOT-ꢃꢄ-3
SOT-ꢃꢄ-3
Active
Active
Active
Bulk
2ꢁ00 Tape & Reel
Bulk
SPXꢀ43ꢀMꢀ/TR
SPXꢀ43ꢀMꢀ-L
▪
▪
SPXꢀ43ꢀMꢀ-L/TR SOT-ꢃꢄ-3
Active
EOL
EOL
EOL
EOL
EOL
OBS
EOL
EOL
EOL
EOL
EOL
EOL
2ꢁ00 Tape & Reel
Bulk
SPXꢀ43ꢀMꢁ
SOT-23-ꢁ
SOT-23-ꢁ
SOT-23-ꢁ
SPXꢀ43ꢀMꢁ/TR
SPXꢀ43ꢀMꢁ-L
2ꢁ00 Tape & Reel
Bulk
▪
▪
SPXꢀ43ꢀMꢁ-L/TR SOT-23-ꢁ
2ꢁ00 Tape & Reel
Bulk
SPXꢀ43ꢀN
TO-ꢄ2
TO-ꢄ2
SPXꢀ43ꢀN/TR
SPXꢀ43ꢀN-L
SPXꢀ43ꢀN-L/TR
SPXꢀ43ꢀS
2000 Tape & Reel
Bulk
TO-ꢄ2
▪
▪
TO-ꢄ2
2000 Tape & Reel
Bulk
NSOICꢃ
NSOICꢃ
NSOICꢃ
NSOICꢃ
SPXꢀ43ꢀS/TR
SPXꢀ43ꢀS-L
SPXꢀ43ꢀS-L/TR
2ꢁ00 Tape & Reel
Bulk
▪
▪
2ꢁ00 Tape & Reel
Solved by
Sꢀpꢁx corporꢂtꢀoꢃ
Hꢁꢂdquꢂrtꢁrs ꢂꢃd
Sales Office
TM
233 South Hillview Drive
Milpitas, CA ꢄꢁ03ꢁ
TEL: (40ꢃ) ꢄ34-7ꢁ00
FAX: (40ꢃ) ꢄ3ꢁ-7ꢂ00
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 herein; neither does it convey
any license under its patent rights nor the rights of others.
Marꢀ3-07
SPXꢀ43ꢀ Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation
ꢀ2
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