AP431ASAL-U [DIODES]
Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO3, ROHS COMPLIANT, SOT23, 3 PIN;
| 型号： | AP431ASAL-U |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO3, ROHS COMPLIANT, SOT23, 3 PIN 光电二极管 |
| 文件： | 总15页 (文件大小：313K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Features
Description
•
Precision reference voltage
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.
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: TO92-3L, SOT89-3L, SOP-8L, SOT23,
SOT25, SC-59
SOT23 and SC-59: Available in “Green” Molding
Compound (No Br, Sb)
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.
•
•
Lead Free Finish/RoHS Compliant for Lead Free and
“Green” products (Note 2)
Ordering Information
AP
X X X X
431
Lead Free
Reference Voltage
Package
Packing
: Tube
-U
Blank : SOP-8L
Y : SOT89-3L
V : TO92-3L
SA : SOT23
W : SC59
L : Lead Free Package
G : Green (Note1)
Tolerance
Blank : +/- 1%
-7/-13 : Taping
-A
-B
: Ammo Box (Note 3)
: Bulk (Note 4)
A
: +/- 0.5%
R : SC59
Q : SOT25
Note:
1. Green is for SOT23 and SC-59.
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 13” Tape and Reel
Part
Quantity Number Quantity Quantity Number Number Quantity Number
Ammo Box
Part Part
Bulk
Part
Device Package Packaging
(Note 5)
Code
(Note 6)
Suffix
Suffix
Suffix
Suffix
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
SA
Q
SOT23
SOT25
SC59
-7
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
AP431(A)SA
AP431(A)Q
AP431(A)W
AP431(A)R
AP431(A)
Lead-free
-7
-7
NA
NA
NA
NA
NA
NA
NA
-13
NA
NA
NA
NA
Lead-free
W
R
SC59
-7
2500/Tape &
Reel
SOP-8L
NA
NA
Lead-free
2500/Tape &
Reel
Y
V
SOT89-3L
TO92-3L
NA
NA
NA
NA
NA
NA
NA
-13
-A
NA
NA
-B
AP431(A)Y
AP431(A)V
Lead-free
NA
2000/Box
1000
Lead-free
Notes: 3. Ammo Box is for TO92-3 Spread Lead.
4. Bulk is for TO92-3 Straight Lead.
5. Suffix “A” denotes AP431A device.
6. 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. 3
1 of 13
OCTOBER 2006
www.diodes.com
© 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
Typical Application Circuit
Typical Application Circuit
REF (R)
Cathode (C)
+
-
VREF
REF (R)
Anode (A)
Anode (A)
AP431/AP431A Rev. 3
2 of 15
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OCTOBER 2006
© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Pin Configuration
Pin Configuration (Top View )
Package
SOP-8L
Pin Configuration (Top View )
Package
1
2
3
4
8
7
REF
NC
NC
1
2
3
CATHODE
ANODE
5
4
ANODE
REF
ANODE
ANODE
SOT25
6
5
ANODE
NC
CATHODE
NC
3
2
REF
3
REF
SC-59
(Package
Code-W)
23
SOT
ANODE 1
ANODE
1
2
CATHODE
CATHODE
3 Cathode
2 Anode
1 REF
3
CATHODE
REF
SC-59
(Package
Code -R)
SOT89-3L
ANODE
1
2
+
+
+
3 Cathode
2 Anode
1 REF
TO92-3L
Absolute Maximum Ratings
Cathode Voltage ……………………………......…..............................……………...…...............…..……………….…….……...……….36V
Continuous Cathode Current ………………………….……...............................…………...........……………………….... -10mA ~ 250mA
Reference Input Current Range ……………..………..............……...............................……........……………….……..………........ 10mA
Operating Temperature Range …………..…….…….....………………...........…..........……………….…………......-20°C ~ 85°C
Lead Temperature………………………….……..….…….…………....…………………….............………………..….…...…............ 260°C
Storage Temperature ……………………………......…....…..........………………..…..........….…...………………...…….... -65°C ~ 150°C
Power Dissipation (Notes 7, 8)
SOT23 Package………………………………………………………………………………..…. 250mW
SOT25 Package .………….....…………………….....…....………………………………...... 250mW
SC59 Package......................................................................………………....……........…. 400mW
SOP-8L Package ……………..…………….......……………………………………...…....…. 600mW
SOT89-3L Package ................................................................
………....……........…. 800mW
TO92-3L Package …….…………..…………….......………………………………...…....…. 780mW
Note 7. TJ, max =150°C
Note 8. Ratings apply to ambient temperature at 25°C
AP431/AP431A Rev. 3
3 of 15
OCTOBER 2006
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© Diodes Incorporated
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 9)
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 10)
0.2
0.5
Ω
|ZKA
|
⎯
Frequency ≤ 1KHz (Fig.1)
VMAX
VMIN
VDEV = VMAX - VMIN
TI
T2
Temperature
Note: 9. 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: 10. 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. 3
4 of 15
OCTOBER 2006
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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. 3
5 of 15
OCTOBER 2006
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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. 3
6 of 15
OCTOBER 2006
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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. 3
7 of 15
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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. 3
8 of 15
OCTOBER 2006
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Application Examples
VIN
VIN
IOUT
RCL
R
VIN
R1B
R1A
+
ON
R2A
R2B
OFF
VIN
-V
Delay =
RC x ln (
)
IOUT = VREF / RCL
<
<
High Limit
LED on when Low Limit
V
V
IN
IN
REF
≈
Low Limit
High Limit
V
(1+R1B/R2B)
(1+R1A/R2A)
REF
≈
V
REF
Fig. 5 Delay
Timer
Fig. 4 Voltage
Monitor
Fig. 6 Current Limiter or Current
Source
VIN
IOUT
VIN
VOUT
VIN
VOUT
PUSE
R1
R1
R2
R2
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
R1B
Output ON when
Low Limit <VIN < High Limit
+
VBE
R2A
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. 3
9 of 15
OCTOBER 2006
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Diagrams ( 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
(4) SOP-8L
0.37/0.51
TOP VIEW
0.89/
1.03
Gauge Plane
Seating Plane
0.38/1.27
Detail "A"
0.45/0.60
1.80/2.00
2.80/3.00
7°~9°
7°~9°
0.35max.
45°
0.085/0.180
Detail "A"
0.013/
0.10
0.3/0.5
0.45/0.61
3.70/4.10
1.27typ
4.80/5.30
0º/8º
AP431/AP431A Rev. 3
10 of 15
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OCTOBER 2006
© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Diagrams ( Continued ) ( All Dimensions in mm )
(5) SOT89-3L
(6) TO92-3L for Bulk pack
AP431/AP431A Rev. 3
11 of 15
OCTOBER 2006
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Diagrams ( Continued ) ( All Dimensions in mm )
(7) TO92-3L for Ammo pack
AP431/AP431A Rev. 3
12 of 15
OCTOBER 2006
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(1) SOT23/SC59
(Top View)
3
L: Lead Free
G: Green
XX
: Marking code
XX Y M X
Y
: Year: 0-9
1
2
M
: Month: A~L
(2) SOT25
5
1
4
L:Lead Free
XX Y M X
XX : Marking code
Y : Year: 0-9
M : Month: A~L
2
3
(3)SOT89-3L
(
)
Top View
Marking Code
:
:
:
XX
Y
M
X X
Y M X
Year: 0-9
Month: A~L
L : Lead-Free Package
X :
1
2
3
Device
Package (Note 11)
Marking Code
Date Code
AP431SA
AP431ASA
AP431Q
AP431AQ
AP431W
AP431AW
AP431R
AP431AR
AP431Y
SOT23
SOT23
SOT25
SOT25
SC59
SC59
SC59
SC59
SOT89-3L
SOT89-3L
D1
D2
A2
A3
A6
A7
A8
A9
A4
A5
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
AP431AY
Notes: 11. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
AP431/AP431A Rev. 3
13 of 15
OCTOBER 2006
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information ( Continued )
(3) SOP-8
(Top View)
8
5
Logo
Accuracy
Blank: 2.495 +1 %
A
: 2.495 +0.5 %
AP431
X
L : Lead Free Package
YY WW
X
WW: Nth week
YY : Year
1
4
SOP-8L
(4) TO92-3L
( Top view )
L: Lead Free Package
AP431
X
Y
: Internal code
: Year
Accuracy
X YWW X X
Blank: 2.495 ±1%
2.495 ± 0.5%
:
A
WW: Nth week
AP431/AP431A Rev. 3
14 of 15
OCTOBER 2006
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
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
agree to hold Diodes incorporated and all the companies whose products are represented on our website , harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AP431/AP431A Rev. 3
15 of 15
OCTOBER 2006
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© Diodes Incorporated
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