AP431ASAG-A [DIODES]
ADJUSTABLE PRECISION SHUNT REGULATOR; 可调式精密并联稳压器
| 型号： | AP431ASAG-A |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | ADJUSTABLE PRECISION SHUNT REGULATOR |
| 文件： | 总14页 (文件大小：281K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
General Description
Features
The AP431 and AP431A are 3-terminal adjustable precision
shunt regulators with guaranteed temperature stability over the
applicable extended commercial temperature range. The output
voltage may be set at any level greater than 2.495V (VREF) up to
36V merely by selecting two external resistors that act as a
voltage divider network. These devices have a typical output
impedance of 0.2Ω. Active output circuitry provides very sharp
turn-on characteristics, making these devices excellent improved
replacements for Zener diodes in many applications.
•
Precision reference voltage
AP431 : 2.495V ± 1%
AP431A : 2.495V ± 0.5%
•
•
•
•
•
•
•
•
Sink current capability: 200mA
Minimum cathode current for regulation: 300µA
Equivalent full-range temp coefficient: 30 ppm/oC
Fast turn-on response
Low dynamic output impedance: 0.2Ω
Programmable output voltage to 36V
Low output noise
Packages: SOT23, SOT23R, SOT25, SC59 (W package
code), SC59 (R package code), SOP-8L and TO92-3L
SOT23, SOT23R, SOP-8L and SC59: Available in
“Green” Molding Compound (No Br, Sb) (Note 1)
Lead Free Finish/RoHS Compliant for Lead Free and
“Green” Products (Note 2)
The precise (+/-) 1% Reference voltage tolerance of the
AP431/AP431A make it possible in many applications to avoid
the use of a variable resistor, consequently saving cost and
eliminating drift and reliability problems associated with it.
•
•
Ordering Information
X X X
X
A P 4 3 1
Reference Voltage
Package
Blank: SOP-8L
: TO92-3L
Packing
Lead-Free
L : Lead Free
:
-B : Bulk
Tolerance
V
:
Blank : +/- 1%
-7/-13 Taping
(Note 1)
G : Green
SA : SOT23
A
: +/- 0.5%
(Note 3)
-A : Ammo Box
W
R
: SC59
:
:
59
SC
Q
25
SOT
: SOT23R
SR
Note:
1. SOT23, SOT23R are “Green” products only.
2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
7” Tape and Reel
Part Number
13” Tape and Reel
Part Number
Ammo Box
Device Package Packaging
Part Number
(Note 4)
Code
(Note 5)
Quantity
Quantity
Quantity
Suffix
Suffix
Suffix
3000/Tape
& Reel
SA
SR
Q
SOT23
SOT23R
SOT25
SC59
-7
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AP431(A)SA
AP431(A)SR
AP431(A)Q
AP431(A)W
AP431(A)R
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
-7
-7
-7
-7
NA
NA
NA
NA
NA
NA
NA
NA
Lead-free
W
R
SC59
2500/Tape
& Reel
NA
SOP-8L
NA
NA
NA
NA
-13
NA
NA
NA
-A
AP431(A)
AP431(A)V
V
TO92-3L
2000/Box
Lead-free
Notes: 3. Ammo Box is for TO92-3 Spread Lead.
4. Suffix “A” denotes AP431A device.
5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP431/AP431A Rev. 5
1 of 14
MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Pin Assignment
Pin Configuration (Top View)
Pin Configuration (Top View)
Package
Package
1
2
3
4
8
7
REF
CATHODE
ANODE
NC
NC
1
2
3
5
4
ANODE
REF
ANODE
ANODE
SOT25
SOP-8L
ANODE
NC
6
5
CATHODE
NC
3
REF
3
2
REF
SC-59
( Package
Code-W)
ANODE
1
SOT23
ANODE 1
CATHODE
2
3
CATHODE
CATHODE
CATHODE
REF
SC-59
( Package
Code-R)
3
2
SOT23R
ANODE 1
1
ANODE
2
REF
+
+
+
3 Cathode
2 Anode
TO92-3L
1 REF
AP431/AP431A Rev. 5
2 of 14
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MARCH 2007
© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Application Circuit
VIN
VOUT
+
+
R1
Cin
Cout
AP431
R2
VOUT = (1+R1/R2)VREF
Precision Regulator
Block Diagram
REF (R)
+
-
VREF
Anode (A)
Symbol
Cathode (C)
REF (R)
Anode (A)
AP431/AP431A Rev. 5
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Absolute Maximum Ratings
Symbol
Vcv
Parameter
Cathode Voltage
Rating
+36
Unit
V
ICC
Continuous Cathode Current
Reference Input Current
Operating Temperature
Storage Temperature
SOT23(R)
-10 to +250
10
mA
mA
oC
IREF
TOP
-20 to +85
-65 to +150
250
TST
oC
mW
mW
mW
mW
mW
SOT25
250
Power Dissipation
SC59
PD
400
(Notes 6, 7)
SOP-8L
600
TO92-3L
780
Note: 6. TJ, max =150°C
7. Ratings apply to ambient temperature at 25°C
AP431/AP431A Rev. 5
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics ( TA = 25oC, V+ = +5.0V, unless otherwise stated )
PARAMETER
TEST CONDITIONS
SYMBOL MIN. TYP. MAX. UNIT
VKA = VREF
I KA = 10mA (Fig.1)
,
AP431
AP431A
2.470
2.482
2.520
2.507
Reference voltage
VREF
2.495
V
Deviation of Reference input voltage over
temperature (Note 8)
VKA = VREF, IKA = 10mA,
Ta = Full range (Fig.1)
VREF
8.0
20
mV
⎯
VKA = 10V ~VREF
VKA= 36V ~10V
R1 = 10KΩ,R2 = ∞ IKA= 10mA (Fig. 2)
R1 = 10KΩ,R2 = ∞ IKA = 10mA
Ta = Full range (Fig. 2)
∆VREF
∆VKA
IREF
-1.4
-1
1.4
-2.0
-2
3.5
mV/V
mV/V
µA
Ratio of the change in Reference voltage to
the change in Cathode voltage
⎯
⎯
⎯
IKA = 10mA (Fig. 2)
Reference input current
Deviation of Reference input current over
temperature
0.4
1.2
αIREF
⎯
µA
Minimum Cathode current for regulation
Off-state current
VKA = VREF (Fig.1)
VKA = 36V, VREF = 0V (Fig. 3)
IKA(MIN)
IKA(OFF)
0.19
0.1
0.5
1.0
mA
µA
⎯
⎯
V
KA = VREF V KA = VREF
∆IKA = 0.1mA ~ 15mA
Dynamic output impedance (Note 9)
0.2
0.5
Ω
|ZKA
|
⎯
Frequency ≤ 1KHz (Fig.1)
VMAX
VMIN
VDEV = VMAX - VMIN
TI
T2
Temperature
Note: 8. Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference over the full temperature
range. The average temperature coefficient of the reference input voltage αVREF is defined as:
VDEV
(
)⋅106
VREF (25°C)
T2 − T1
ppm
……………………..……………….. (
)
α VREF
=
°C
Where:
T2 – T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Note: 9. The dynamic output impedance, RZ, is defined as:
∆VKA
∆IKA
ZKA
=
When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output impedance of the overall
circuit, is defined as:
∆v
∆i
R1
R2
'
ZKA
=
≈ZKA (1+
)
AP431/AP431A Rev. 5
5 of 14
MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Test Circuits
Input
IN
IN
VKA
IKA
VKA
IKA
VKA
R1
R2
IREF
VREF
IZ(OFF)
VREF
Note:VKA=VREF(1+R1/R2)+IREFxR1
Fig 2. Test Circuit for VKA > VREF
Fig 1. Test Circuit for VKA= VREF
Fig 3. Test Circuit for Off-State Current
AP431/AP431A Rev. 5
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MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
Cathode Current vs Cathode Voltage
Cathode Current (uA) vs Cathode Voltage
100
600
400
200
VKA =Vref
Ta=25oC
VKA =Vref
Ta=25oC
0
0
-100
-200
-1.5
-0.5
0.5
Cathode Voltage (v)
1.5
2.5
-1
-0.5
0
0.5
1
1.5
2
2.5
Cathode Voltage(v)
Reference Voltage vs Free-Air Temperature
Reference Input Current vs Free Temperature
2
2500
R1=10K
1.8
IKA=10mA
2495
2490
2485
2480
1.6
1.4
1.2
1
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80
-50
-25
0
25
50
75
100
125
Free-Air Temperature (oC)
o
Free-Air Temperature (
C)
Change in Reference Voltage vs Cathode Voltage
0
-2
IKA=10mA
-4
Ta=25oC
-6
-8
-10
-12
0
5
10
15
20
25
30
Cathode Voltage (V)
AP431/AP431A Rev. 5
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics ( Continued )
Small-Signal Voltage Amplification vs Frequency
60
50
40
30
20
10
0
IKA=10mA
TA=25oC
Output
232Ω
IKA
15KΩ
9µF
-
+
-
8.25KΩ
GND
Test Circuit for Voltage Amplification
10K
1K
100K
1M
10M
f-Frequency-Hz
Reference Impedance vs Frequency
100
I
KA=10mA
o
T
A=25 C
1KΩ
Output
I
KA
10
1
50Ω
-
+
GND
Test Circuit for Reference Impedance
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
AP431/AP431A Rev. 5
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics ( Continued )
Pulse Response
Input
6
5
4
3
2
1
0
TA=25oC
220Ω
Output
Pulse
Generator
f=100kHz
50Ω
Output
GND
Test Circuit for Pulse Response
-1
0
1
2
3
4
5
6
7
t-Time-µS
150Ω
STABILITY BOUNDARY CONDITIONS†
100
TA=25oC
AVKA=V
ref
I
KA
90
80
70
60
50
40
30
20
10
0
B VKA=5V
+
-
VBATT
C VKA=10V
D VKA=15V
CL
B
Stable
C
Stable
Test Circuit for Curve A
A
D
I
KA
150Ω
R1=10KΩ
CL
+
-
R2
VBATT
0.001
0.01
0.1
1
10
CL-Load Capacitance-µF
The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted
to establish the initial VKA and IKA conditions with CL=0.VBATT and
CL were then adjusted to determine the ranges of stability.
Test Circuit for Curve B, C, and D
AP431/AP431A Rev. 5
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MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Application Examples
VIN
VIN
IOUT
RCL
R
VIN
R1B
R1A
O
N
+
R2A
R2B
OFF
VIN
Delay =
RC x ln (
)
IOUT = VREF / RCL
<
<
LED on when Low Limit VIN High Limit
V
IN -V
REF
≈
≈
Low Limit
High Limit
VREF (1+R1B/R2B)
REF (1+R1A/R2A)
V
Fig. 5 Delay
Timer
Fig. 4 Voltage
Monitor
Fig. 6 Current Limiter or Current
Source
VIN
IOUT
VIN
VOUT
VIN
VOUT
PULSE
R
1
R
1
R
2
R
2
RS
LIMIT
(1 + R1/R2) x VREF
VOUT
= (1 + R1/R2) x VREF
IOUT = VREF / RS
Fig. 7 Constant-Current
Sink
Fig. 8 Higher-Current Shunt
Regulator
Fig. 9 Crow Bar
VIN
R1A
R2A
R1B
Output ON when
Low Limit <
VIN < High Limit
+
VBE
R2B
(1 + R1B/R2B) +VBE
(1 + R1A/R2A)
Low Limit
High Limit
VREF
VREF
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
AP431/AP431A Rev. 5
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MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(1) SOT23(R)/SOT25/SC59
(Top View)
:
Year
: Month (A~L)
Y
M
XX Y M X
Marking Code
X : L : Lead Free
: Green
G
23(R)/SOT25/SC59
SOT
(2) SOP-8L
(Top view)
5
8
Accuracy
Blank: 2.495
Logo
±1%
A: 2.495±0.5%
Part Number
AP431 X
X
L : Lead-Free Package
G : Green
YY WW
: Nth week
: Year
WW
YY
4
1
SOP-8L
(3) TO92-3L
(Top View)
AP431
L : Lead Free
Y : Year
WW :Nth week
Accuracy
Blank: 2.495 + 1%
A: 2.495 + 0.5%
X Y WW X X
X : Internal code
TO92-3L
AP431/AP431A Rev. 5
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MARCH 2007
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Code Table
Device
Package (Note 10)
Marking Code
Date Code
AP431SA
SOT23
SOT23
SOT23R
SOT23R
SOT25
SOT25
SC59
SC59
SC59
SC59
D1
D2
D5
D6
A2
A3
A6
A7
A8
A9
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
AP431ASA
AP431SR
AP431ASR
AP431Q
AP431AQ
AP431W
AP431AW
AP431R
AP431AR
Note: 10. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
AP431/AP431A Rev. 5
12 of 14
MARCH 2007
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information ( All Dimensions in mm )
(1) SOT25
(2) SC59
0.35/0.50
2.70/3.00
Typ 2.80
2.70/
3.00
TOP VIEW
TOP VIEW
1.90
2.90/3.10
Typ 3.00
2.90/3.10
1.00/
1.30
1.00/1.30
Typ 1.10
0.10/0.20 Typ 0.15
0.10/0.20
0.013/0.10
Typ 0.05
0.013/0.10
Typ Typ
0.95 0.55
0.95
0.35/0.55
0.35/0.55
Typ 0.40
0°/8°
(3) SOT23(R)
(4) SOP-8L
0.37/0.51
8
1
5
4
5.90/6.10
Typ 6.00
°
TOP VIEW
0.89/
1.03
0.30/0.50
Typ 0.40
0.45/0.60
1.80/2.00
3.80/3.90
Typ 3.85
°
0.60/0.70
Typ 0.65
0.15/0.25
Typ 0.20
2.80/3.00
0.35
°
0.085/0.180
°
1.40/1.50
Typ 1.45
°
0.013/
0.10
0.08/0.25
Typ 0.15
0.45/0.61
3.85/3.95
Typ 3.90
1.27
0º/8º
4.85/4.95
Typ 4.90
AP431/AP431A Rev. 5
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MARCH 2007
© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information ( Continued ) ( All Dimensions in mm )
(5) TO92-3L for Ammo pack
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agreeto hold DiodesIncorporatedand all the companieswhose productsare represented onour website, harmlessagainst all damages.
LIFE SUPPORT
Diodes Incorporated productsare notauthorizedfor use ascriticalcomponentsin lifesupportdevices or systemswithout theexpressed written approval ofthe
PresidentofDiodesIncorporated.
AP431/AP431A Rev. 5
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MARCH 2007
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