AP431AWL-U [DIODES]
Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO3, ROHS COMPLIANT, SC59, 3 PIN;
| 型号： | AP431AWL-U |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO3, ROHS COMPLIANT, SC59, 3 PIN 光电二极管 |
| 文件： | 总16页 (文件大小：305K) |
| 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, SOT89-3L, SC59,
SC59R, SOP-8L and TO92-3L
Lead Free packages: SOT25, SOT89-3L, SC59,
SC59R and TO92-3L
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.
•
•
•
SOP-8L, SOT23, SOT23R, SC59, SC59R: Available in
“Green” Molding Compound (No Br, Sb) (Note 2)
Lead Free Finish/ RoHS Compliant (Note 3)
Ordering Information
AP431 X XX X X
Package
Lead Free
Reference Voltage
Packing
Tolerance
Blank : +/- 1%
A : +/- 0.5%
SA : SOT23
SR : SOT23R
Q : SOT25
W : SC59
R : SC59R
L : Lead Free (Note 1)
G : Green (Note 2)
-U : Tube
-7/ 13 : Tape & Reel
-A : Ammo Box (Note 4)
Blank : SOP-8L
Y : SOT89-3L
V : TO92-3L
7” Tape and Reel
13” Tape and Reel
Ammo Box
Part Number
Device
(Note 5)
Package Packaging
Part Number
Suffix
Part Number
Suffix
Code
(Note 3, 6)
Quantity
Quantity
NA
Quantity
Suffix
3000/Tape
& Reel
SA
SR
Q
SOT23
SOT23R
SOT25
SC59
-7
NA
NA
NA
NA
NA
-13
NA
NA
AP431(A)SA
AP431(A)SR
AP431(A)Q
AP431(A)W
AP431(A)R
AP431(A)
3000/Tape
& Reel
-7
NA
NA
NA
NA
NA
NA
NA
NA
-A
3000/Tape
& Reel
-7
NA
NA
Lead-free
3000/Tape
& Reel
W
-7
NA
NA
3000/Tape
& Reel
R
SC59R
SOP-8L
-7
NA
NA
2500/Tape
& Reel
NA
NA
NA
2500/Tape
& Reel
Y
V
SOT89-3L
TO92-3L
NA
NA
NA
NA
-13
NA
NA
AP431(A)Y
AP431(A)V
Lead-free
Lead-free
NA
2000/Box
Notes:
1. SOT25, SOT89-3L and TO92-3L are “Lead Free” products only.
2. SOP-8L, SOT23 and SOT23R are available in “Green” product only.
3. RoHS revision 13.2.2003. Glass and high temperature solder exemptions applied, see EU Directive Annex Notes 5 and 7
4. Ammo Box is for TO92-3L Spread 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. 10
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APRIL 2008
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Pin Assignment
(1) SOT25
(2) SOP-8L
(Top View)
(Top View)
1
2
3
4
8
7
REF
CATHODE
ANODE
NC
1
2
3
5
4
ANODE
REF
ANODE
ANODE
NC
6
5
ANODE
NC
CATHODE
NC
(3) SC59
(4) SC59R
(Top View)
(Top View)
3 REF
3
2
CATHODE
REF
ANODE
1
ANODE
1
2 CATHODE
(5) SOT23
(6) SOT23R
(Top View)
(Top View)
3
CATHODE
REF
3
REF
1
ANODE
ANODE
1
2
2
CATHODE
(7) SOT89-3L
(8) TO92-3L
(Top View)
(Top View)
+
3 Cathode
2 Anode
1 REF
+
+
3
2
1
Anode Cathode
REF
AP431/AP431A Rev. 10
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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. 10
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Absolute Maximum Ratings
Symbol
Parameter
Rating
+36
Unit
Vcv
ICC
Cathode Voltage
V
Continuous Cathode Current
Reference Input Current
Operating Temperature
Storage Temperature
-10 to +250
10
mA
mA
oC
oC
mW
mW
mW
mW
mW
mW
IREF
TOP
TST
-20 to +85
-65 to +150
400
SOT23(R)
SOT25
550
SC59(R)
SOP-8L
400
PD
Power Dissipation (Notes 7, 8)
600
SOT89-3L
TO92-3L
800
780
Notes:
7. TJ, max =150°C.
8. Ratings apply to ambient temperature at 25°C.
AP431/AP431A Rev. 10
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics (TA = 25oC, V+ = +5.0V, unless otherwise stated)
Symbol
Parameter
Test Conditions
Min Typ. Max Unit
V
KA = VREF
,
AP431
2.470
2.482
2.520
2.507
VREF
Reference voltage
2.495
V
I KA = 10mA (Fig.1) AP431A
Deviation of Reference input
voltage over temperature
(Note 9)
V
KA = VREF, IKA = 10mA,
VREF
8.0
20
mV
⎯
Ta = Full range (Fig.1)
Ratio of the change in
Reference voltage to the
change in Cathode voltage
Reference input current
VKA = VREF to10V
VKA = 10V to 36V
-1.4 -2.0 mV/V
-1 -2 mV/V
⎯
⎯
⎯
⎯
ΔVREF
ΔVKA
IKA = 10mA (Fig. 2)
IREF
R1 = 10KΩ,R2 = ∞ IKA= 10mA (Fig. 2)
1.4 3.5
0.4 1.2
μA
μA
Deviation of Reference input R1 = 10KΩ,R2 = ∞ IKA = 10mA
αIREF
current over temperature
Minimum Cathode current
for regulation
Ta = Full range (Fig. 2)
IKA(MIN)
IKA(OFF)
VKA = VREF (Fig.1)
0.19 0.5
0.1 1.0
mA
⎯
⎯
Off-state current
VKA = 36V, VREF = 0V (Fig. 3)
μA
V
KA = VREF V KA = VREF
Dynamic output impedance
(Note 10)
ΔIKA = 0.1mA ~ 15mA
Frequency≤ 1KHz (Fig.1)
0.2 0.5
Ω
|ZKA|
⎯
VMAX
VMIN
VDEV = VMAX - VMIN
TI
T2
Temperature
Notes:
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.
Notes: 10. The dynamic output impedance, RZ, is defined as:
ΔVKA
ΔIKA
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:
Δv
Δi
R1
R2
'
ZKA
=
≈ZKA (1+
)
AP431/AP431A Rev. 10
5 of 16
APRIL 2008
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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 1. Test Circuit for VKA= VREF
Fig 2. Test Circuit for VKA > VREF
Fig 3. Test Circuit for Off-State Current
AP431/AP431A Rev. 10
6 of 16
APRIL 2008
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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. 10
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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
10
1
I
KA=10mA
o
T
A=25 C
1KΩ
Output
I
KA
50Ω
-
+
GND
Test Circuit for Reference Impedance
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
AP431/AP431A Rev. 10
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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. 10
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APRIL 2008
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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. 10
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APRIL 2008
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(1) SC59 and SC59R
( Top View )
3
XX : Identification code
Y : Year 0-9
M : Month A~L
XX Y M X
L : Lead Free
G : Green
1
2
(2) SOT23 and SOT23R
( Top View )
3
XX
Y
: Identification code
: Year 0-9
: Month A~L
M
XX Y M X
G
: Green
1
2
(3) SOT25
( Top View )
5
4
XX
: Identification code
M X
XX Y
2
Y : Year 0~9
M : Month A~L
X :
L : Lead Free
1
3
AP431/AP431A Rev. 10
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ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information (Continued)
(4) SOP-8L
( Top view )
5
8
Accuracy
Blank : 2.495 + 1%
A : 2.495 + 0.5%
Logo
Part Number
AP431 X
WW
X
YY
G : Green
WW : Nth week
YY : Year
4
1
(5) SOT89-3L
( Top View )
XX : Identification code
Y : Year : 0~9
M : Month : A~L
X X
Y M
X
X : L : Lead Free
1
2
3
(6) TO92-3L
( Top View )
L : Lead Free
Y : Year
WW : Nth week
X : Internal code
Accuracy
Blank: 2.495 + 1%
A: 2.495 + 0.5%
AP431
X Y WW X X
Identification Code Table
Package (Note 11) Identification Code
Device
Date Code
AP431SA
AP431ASA
AP431SR
AP431ASR
AP431Q
AP431AQ
AP431W
AP431AW
AP431R
SOT23
SOT23
SOT23R
SOT23R
SOT25
SOT25
SC59
SC59
SC59
SC59
SOT89-3L
SOT89-3L
D1
D2
D5
D6
A2
A3
A6
A7
A8
A9
A4
A5
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
AP431AR
AP431Y
AP431AY
Notes:
11. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
AP431/AP431A Rev. 10
12 of 16
APRIL 2008
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© Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information (All Dimensions in mm)
(1) Package type: SOT25
(2) Package Type: SC59 and SC59R
0.35/0.50
2.70/
3.00
TOP VIEW
1.90
2.90/3.10
1.00/
1.30
0.10/0.20
0.013/0.10
0.95
0.35/0.55
0°/8°
AP431/AP431A Rev. 10
13 of 16
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APRIL 2008
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information (Continued)
(3) Package Types: SOT23 and SOT23R
(4) Package Type: SOP-8L
Gauge Plane
Seating Plane
0.38/1.27
Detail "A"
7°~9°
7°~9°
0.35max.
45°
Detail "A"
0.3/0.5
3.70/4.10
1.27typ
0.78
4.80/5.30
8x-0.60
6x-1.27
Land Pattern Recommendation
(Unit: mm)
AP431/AP431A Rev. 10
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APRIL 2008
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information (Continued)
(5) Package Type: SOT89-3L
1.40/1.75
Typ 1.60
1.7
0.4
1.45/1.55
0.9
1.5
Typ 1.50
2.90/3.10
Land Pattern Recommendation (Unit: mm)
Typ 3.00
50 (2x)
80 (2x)
4.40/4.60 Typ 4.50
0.36/0.48
Typ 0.42
0.41/0.53 0.36/0.48
Typ 0.47 Typ 0.42
0.35/0.43
Typ 0.39
(6) Package Type: TO92-3L for Ammo pack
AP431/AP431A Rev. 10
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APRIL 2008
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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
agreeto hold Diodes Incorporatedand all the companies whose productsare represented onour website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated productsare notauthorizedfor use ascriticalcomponentsin lifesupportdevices or systems without theexpressed written approval ofthe
PresidentofDiodesIncorporated.
AP431/AP431A Rev. 10
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