AS431_12 [BCDSEMI]
ADJUSTABLE PRECISION SHUNT REGULATORS; 可调式精密并联稳压器
| 型号： | AS431_12 |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | ADJUSTABLE PRECISION SHUNT REGULATORS |
| 文件： | 总18页 (文件大小：704K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
General Description
Features
The AS431 is a three-terminal adjustable shunt regula-
tor with guaranteed thermal stability over a full opera-
tion range. It features sharp turn-on characteristics, low
temperature coefficient and low output impedance,
which make it ideal substitute for Zener diode in appli-
cations such as switching power supply, charger and
other adjustable regulators.
·
Programmable Precise Output Voltage from 2.5V
to 36V
High Stability under Capacitive Load
Low Temperature Deviation: 4.5mV Typical
Low Equivalent Full-range Temperature Coeffi-
·
·
·
o
cient with 20PPM/ C Typical
·
·
·
Sink Current Capacity from 1mA to 100mA
Low Output Noise
The output voltage of AS431 can be set to any value
o
between V
(2.5V) and the corresponding maximum
Wide Operating Range of -40 to 125 C
REF
cathode voltage (36V).
Applications
The AS431 precision reference is offered in two volt-
age tolerance: 0.5% and 1.0%.
·
·
·
·
·
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
This IC is available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5 and SOT-89.
SOT-89
TO-92(Bulk Packing)
TO-92(Ammo Packing)
SOT-23-5
SOT-23
Figure 1. Package Types of AS431
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
1
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Pin Configuration
N Package
(SOT-23)
ANODE
R Package
(SOT-89)
K Package
(SOT-23-5)
3
NC
ANODE
REF
1
2
3
5
*
(Note 1)
2
3
1
CATHODE
4
1
2
CATHODE
REF ANODE
REF
CATHODE
Note 1: Pin 2 is attached to substrate and
*
must be connected to ANODE or open
Z Package
Z Package
(TO-92(Bulk Packing))
(TO-92(Ammo Packing))
3
2
1
CATHODE
ANODE
REF
3
2
1
CATHODE
ANODE
REF
Figure 2. Pin Configuration of AS431 (Top View)
Functional Block Diagram
CATHODE
+
-
REF
VREF
ANODE
Figure 3. Functional Block Diagram of AS431
BCD Semiconductor Manufacturing Limited
Dec. 2012 Rev. 2. 6
2
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Ordering Information
AS431
ꢀ -
E1: Lead Free
G1: Green
Circuit Type
Voltage Tolerance
A: 0.5%
B: 1.0%
TR: Tape and Reel or Ammo
Blank: Bulk
Package
N: SOT-23
R: SOT-89
K: SOT-23-5
Z: TO-92
Part Number
Marking ID
Temperature
Voltage
Tolerance
Packing
Type
Package
SOT-23
Range
Lead Free
AS431ANTR-E1
AS431BNTR-E1
AS431AKTR-E1
AS431BKTR-E1
AS431AZ-E1
Green
Lead Free
Green
GB5
0.5%
1.0%
AS431ANTR-G1 EB5
AS431BNTR-G1 EB6
AS431AKTR-G1 E6H
AS431BKTR-G1 E6I
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Bulk
-40 to 125oC
GB6
0.5%
1.0%
G6H
-40 to 125oC
-40 to 125oC
-40 to 125oC
SOT-23-5
G6I
0.5%
0.5%
1.0%
1.0%
AS431AZ-G1
AS431AZ-E1
AS431AZ-G1
AS431AZ-G1
AS431BZ-G1
AS431BZ-G1
G43G
AS431AZTR-E1
AS431BZ-E1
AS431AZTR-G1 AS431AZ-E1
Ammo
TO-92
AS431BZ-G1
AS431BZ-E1
Bulk
AS431BZTR-E1
AS431ARTR-E1
AS431BRTR-E1
AS431BZTR-G1 AS431BZ-E1
AS431ARTR-G1 E43G
Ammo
0.5%
1.0%
Tape & Reel
Tape & Reel
SOT-89
AS431BRTR-G1 E43H
G43H
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
3
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Absolute Maximum Ratings (Note 2)
Parameter
Symbol
VKA
Value
Unit
V
Cathode Voltage
40
-100 to 150
10
IKA
Cathode Current Range (Continuous)
Reference Input Current Range
mA
mA
IREF
Z, R Package: 770
N, K Package: 370
150
PD
Power Dissipation
mW
oC
TJ
Junction Temperature
oC
V
TSTG
ESD
Storage Temperature Range
ESD (Human Body Model)
-65 to 150
2000
Note 2: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
VKA
Min
Max
36
Unit
V
VREF
Cathode Voltage
Cathode Current
IKA
1.0
-40
100
mA
Operating Ambient
Temperature Range
oC
TA
125
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
4
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Electrical Characteristics
o
Operating Conditions: T =25 C, unless otherwise specified.
A
Test
Circuit
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
0.5%
1.0%
2.487 2.500 2.512
2.475 2.500 2.525
VREF
VKA=VREF, IKA=10mA
Reference Voltage
4
V
0 to 70oC
4.5
4.5
4.5
8
VKA=VREF
Deviation of Reference Voltage
Over Full Temperature Range
-40 to 85oC
ΔVREF
4
5
10
16
mV
IKA= 10mA
-40 to 125oC
ΔVKA
10V to VREF
ΔVKA
36V to 10V
=
-1.0
-2.7
Ratio of Change in Reference
Voltage to the Change in
Cathode Voltage
ΔVREF
ΔVKA
IKA=10mA
mV/V
=
-0.5
0.7
-2.0
4
IREF
IKA=10mA,R1=10KΩ, R2=∞
Reference Current
5
5
μA
μA
IKA=10mA, R1=10KΩ
R2=∞, TA=-40 to 125oC
Deviation of Reference Current
Over Full Temperature Range
ΔIREF
0.4
0.4
1.2
1.0
1.0
0.5
IKA
Minimum Cathode Current for
Regulation
VKA=VREF
4
6
4
mA
μA
Ω
(Min)
IKA
VKA=36V, VREF=0
Off-state Cathode Current
Dynamic Impedance
0.05
0.15
(Off)
VKA=VREF, IKA=1 to 100mA,
ZKA
f ≤ 1.0KHz
SOT-23
SOT-23-5
TO-92
135.9
135.9
81.9
oC/W
θJC
Thermal Resistance
SOT-89
29.8
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
5
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Electrical Characteristics (Continued)
R1
VKA
VIN
IKA
VREF
Figure 4. Test Circuit 4 for VKA=VREF
R3
VIN
VKA
IKA
R1
IREF
VKA=VREF(1+R1/R2)+ IREF*R1
R2
VREF
Figure 5. Test Circuit 5 for VKA>VREF
VKA
VIN
IOFF
Figure 6. Test Circuit 6 for IOFF
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
6
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Performance Characteristics
2.510
2.505
2.500
2.495
2.490
2.485
1.5
1.0
0.5
0.0
VKA = VREF
IKA = 10mA
R1=10K,R2=Infinite
IKA=10mA
-60 -40 -20
0
20
40
60
80 100 120 140
-60 -40 -20
0
20
40
60
80 100 120 140
Ambient Temperature (oC)
Ambient Temperature (0C)
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
800
150
VKA=VREF
VKA=VREF
TA=250C
TA=250C
600
100
400
200
0
50
0
-50
-200
-100
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
-2
-1
0
1
2
3
Cathode Voltage (V)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Cathode Current vs. Cathode Voltage
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
7
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Performance Characteristics (Continued)
2.0
-0.9
1.8
VKA=3.5V to 36V
VKA=36V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
VREF=0
-1.0
-1.1
-1.2
-1.3
-1.4
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 11. Off-State Cathode Current vs.
Ambient Temperature
Figure 12. Ratio of Delta Reference Voltage to the
Ratio of Delta Cathode Voltage
Output
70
I KA
TA=250C
60
50
40
30
20
10
0
15K
IKA=10mA
242
10μF
8.2K
-10
1k
10k
100k
1M
GND
Small Signal Frequency (Hz)
Figure 13. Small Signal Voltage Gain vs. Frequency
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
8
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Performance Characteristics (Continued)
Output
IKA=10mA
TA=25oC
1K
10
IKA
50
1
GND
0.1
1K
10K
100K
1,000K
Frequency (Hz)
Figure 14. Reference Impedance vs. Frequency
100
90
80
70
60
50
40
30
20
10
0
150
R1 (10K)
IKA
Stable
Stable
TA=25oC
VKA=VREF
VKA= 5V:No oscillation
KA=10V:No oscillation
R2
V
VKA=15V:No oscillation
1
10
0.001
0.01
0.1
Load Capacitance (μF)
Figure 15. Stability Boundary Conditions vs. Load Capacitance
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
9
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Performance Characteristics (Continued)
5
Input
Output
4
220
3
Pulse
Generator
f=100KHz
50
Output
2
1
0
GND
0
2
4
6
Time (μS)
Figure 16. Pulse Response of Input and Output Voltage
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
10
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Application
R3
VOUT
VIN
R1
V
=(1+R1/R2)*V
REF
OUT
VREF
R2
AS431
Figure 17. Shunt Regulator
VIN
VOUT
R1
R4
V
=(1+R2/R3)*V
REF
R2
OUT
VREF
R3
AS431
Figure 18. High Current Shunt Regulator
R2
VIN
IOUT
I
=V /R2 + I
REF KA
OUT
R1
AS431
Figure 19. Current Source or Current Limit
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
11
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Typical Application (Continued)
VIN
AZ1117
Adjust
VOUT
R1
8.2K
5V, 1A
R2
250
AS431
R3
250
Figure 20. Precision 5V 1A Regulator
R3
R5
R4
C1
R1
VOUT
R2 680
C2
U2
Q1
3
4
COMP
2
AS431
PWM Controller
VFB
PS521
Figure 21. PWM Converter with Reference
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
12
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Mechanical Dimensions
TO-92(Bulk Packing)
Unit: mm(inch)
1.000(0.039)
3.430(0.135)
MIN
1.400(0.055)
0.320(0.013)
0.510(0.020)
0.000(0.000)
0.380(0.015)
Φ1.600(0.063)
MAX
4.400(0.173)
4.800(0.189)
0.360(0.014)
0.760(0.030)
1.270(0.050)
TYP
2.420(0.095)
2.660(0.105)
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
13
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Mechanical Dimensions (Continued)
TO-92(Ammo Packing)
Unit: mm(inch)
4.400(0.173
)
(
)
4.800 0.189
1.100(0.043
)
1.270(0.050
)
)
3.430(0.135
Typ
)
1.400(0.055
MIN
2.500(0.098
)
0.320(0.013
0.510(0.020)
)
(
)
4.000 0.157
)
0.000(0.000
13.000(0.512
)
0.380(0.015)
(
)
15.000 0.591
Φ1.600(0.063)
MAX
0.
0.
(0.015)
380
)
(0.022
550
)
2.540(0.100
Ty
p
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
14
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Mechanical Dimensions (Continued)
SOT-23
Unit: mm(inch)
0.100(0.004) GAUGE PLANE
7.0°
R0.100(0.004)
4×
3.0 °
0.500(0.020)
0.700(0.028)
R0.100(0.004)
0.900(0.035)
1.100(0.043)
7.0°
~
0.0° 10.0°
2.0°
0.020(0.001)
0.100(0.004)
1.050(0.041)REF
0.080(0.003)
0.150(0.006)
0.200(0.008)MIN
0.550(0.022)REF
2.800(0.110)
3.000(0.118)
1.200(0.047)
1.400(0.055)
2.300(0.091)
2.500(0.098)
0.300(0.012)
0.500(0.020)
0.920(0.036)
0.980(0.039)
1.900(0.075)REF
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
15
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Mechanical Dimensions (Continued)
SOT-23-5
Unit: mm(inch)
2.820(0.111)
3.020(0.119)
0.100(0.004)
0.200(0.008)
0.200(0.008)
0.700(0.028)
REF
0.300(0.012)
0.400(0.016)
0°
8°
0.950(0.037)
TYP
1.800(0.071)
2.000(0.079)
0.000(0.000)
0.150(0.006)
0.900(0.035)
1.300(0.051)
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
16
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AS431
Mechanical Dimensions (Continued)
SOT-89
Unit: mm(inch)
4.400(0.173)
4.600(0.181)
1.550(0.061)REF
1.400(0.055)
1.600(0.063)
1.030(0.041)REF
45
2.300(0.091)
3.950(0.156)
2.060(0.081)REF
2.600(0.102)
4.250(0.167)
3
10
0.900(0.035)
1.100(0.043)
0.350(0.014)
0.450(0.018)
0.320(0.013)
0.320(0.013)
0.520(0.020)
0.520(0.020)
0.480(0.019)
3.000(0.118)
TYP
1.500(0.059)
1.800(0.071)
0.320(0.013)REF
1.620(0.064)REF
3
2.210(0.087)REF
R0.150(0.006)
10
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
17
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
- Headquarters
- Wafer Fab
BCD Semiconductor Manufacturing Limited
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China
800 Yi Shan Road, Shanghai 200233, China
Tel: +86-21-24162266, Fax: +86-21-24162277
Tel: +86-21-6485 1491, Fax: +86-21-5450 0008
REGIONAL SALES OFFICE
Shenzhen Office
Taiwan Office
USA Office
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office
BCD Semiconductor (Taiwan) Company Limited
BCD Semiconductor Corp.
Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen,
4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,
30920 Huntwood Ave. Hayward,
China
Taiwan
Tel: +886-2-2656 2808
CA 94544, USA
Tel: +86-755-8826 7951
Tel : +1-510-324-2988
Fax: +86-755-8826 7865
Fax: +886-2-2656 2806
Fax: +1-510-324-2788
相关型号：
©2020 ICPDF网 联系我们和版权申明