Anachip AP431AQL Adjustable precision shunt regulator Datasheet

AP431/AP431A
Adjustable Precision Shunt Regulator
„ Features
•
•
•
•
•
•
•
•
•
„ Description
The AP431/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.
The precise (+/-) 1% Reference voltage tolerance of
the AP431/431A 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.
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: TO92, SOT89, SOT23, SOT25 and
SOP
„ Ordering Information
A P 4 3 1 X X X X X
Operating Temp. Range
Blank :
I :
Reference Voltage
-20 oC~85oC
-40 oC~85oC
Lead Free
Package
Packing
Blank : Normal
Blank : SOP-8L
Blank : Tube or bulk
Y
: SOT89-3L L : Lead Free Package A
: Taping
V
: TO92-3L
W
: SOT23-3L
R
: SOT23-3L
Q
: SOT25
Tolerance:
Blank : +/- 1%
A
: +/- 0.5%
„ Typical Application Circuit
VIN
VOUT
+
R1
Cin
+
Cout
AP431
R2
VOUT = (1+R1/R2)VREF
Precision Regulator
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.0 May.7, 2004
1/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Symbol
„ Block Diagram
Cathode (C)
REF (R)
+
Cathode (C)
VREF
REF (R)
Anode (A)
Anode (A)
„ Pin Configuration
Order Number
Pin Configuration (Top View)
AP431Y
AP431 AY
AP431IY
AP431IAY
(SOT89)
3 Cathode
AP431R
AP431AR
AP431IR
AP431IAR
(SOT23)
2 Anode
1 REF
+
3 Cathode
+
2 Anode
+
AP431V
AP431 AV
AP431IV
AP431IAV
(TO92)
AP431
AP431A
AP431I
AP431IA
(SOP)
Order Number
1 REF
AP431W
AP431AW
AP431IW
AP431IAW
(SOT23)
Cathode
1
8
REF
Anode
2
7
Anode
Anode
3
6
Anode
NC
4
5
NC
AP431 Q
AP431 AQ
AP431IQ
AP431IAQ
(SOT25)
Anachip Corp.
www.anachip.com.tw
Pin Configuration (Top View)
3 Cathode
Anode 1
2 REF
3 REF
Anode 1
2 Cathode
NC
1
NC
2
Cathode
3
5
Anode
4
REF
Rev.1.0 May.7, 2004
2/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Marking Information
(1) SOT23 / SOT25 / SOT89
P/N Type
AP431Y
AP431AY
AP431IY
AP431IAY
AP431W
AP431AW
AP431IW
AP431IAW
AP431R
AP431AR
AP431IR
AP431IAR
AP431Q
AP431AQ
AP431IQ
AP431IAQ
XX
A4
A5
AA
AB
A6
A7
AC
AD
A8
A9
AE
AF
A2
A3
AG
AH
(Top View)
SOT23/SOT25
SOT89
XX YM X
XX
YMX
XX: P/N Type
Date code
Y : Year
M : Month(A~L)
X: Blank : normal
L : Lead Free Package
(2) SOP
( Top view )
AC
AP431X X
YYWW X
Logo
Date code
YY : Year
WW: Nth week
Lead Free
Blank: normal
L: Lead Free Package
Temp. grade
Blank: -20oC ~ +85oC
I
: -40oC ~ +85oC
Accuracy
Blank: 2 . 495 ± 1 %
A
: 2 . 495 ± 0 . 5 %
(3)TO92
( Top view )
Temp. grade
Accuracy
Blank: 2.495 ± 1%
A
: 2.495 ± 0.5%
Date code
AP431X
X YWW X X
Internal code
Y : Year
WW: Nth week
Blank: -20oC ~ +85oC
I
: -40oC ~ +85oC
Lead Free
Blank: normal
L: Lead Free Package
Anachip Corp.
www.anachip.com.tw
Rev.1.0 May.7, 2004
3/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Absolute Maximum Ratings
Cathode Voltage ………………………………......…..............................……………………………...……….36V
Continuous Cathode Current ………………………….……...............................…………….... -10mA ~ 250mA
Reference Input Current Range ……………..………..............……..............................………….…....... 10mA
Operating Temperature Range (AP431)…………..…….…….....………………...........………......-20oC ~ 85oC
(AP431I).……………….….............………………………...…….. -40oC ~ 85oC
Lead Temperature………………………….………….…….…………....…………………….........…............ 260oC
Storage Temperature ……………………………......…....….............………………..……............ -65oC ~ 150oC
Power Dissipation (Notes 1. 2)
SOT89 Package .…………......……………………….............….... 0. 80W
TO92 Package ….…………..………………………....……….....… 0.78W
SOT23 package .……………..…………….......………………….…. 0.25W
SOT25 Package……………….……...…………….…………………..0.25W
SOP Package………………..………………………………..……… 0.6W
Note 1: TJ, max =150oC
Note 2: Ratings apply to ambient temperature at 25oC
„ Electrical Characteristics (Ta=25oC , unless otherwise specified.)
PARAMETER
TEST CONDITIONS
VKA = VREF,
AP431
Reference voltage
I KA = 10mA (Fig.1) AP431A
Deviation of Reference input voltage VKA = VREF, IKA = 10mA,
over temperature (Note 3)
Ta = Full range (Fig.1)
Ratio of the change in Reference
VKA = 10V
voltage to the change in Cathode
IKA = 10mA (Fig.2) ~VREF
voltage
VKA= 36V ~10V
R1 = 10KΩ,R2 = ∞ IKA= 10mA
Reference input current
(Fig.2)
Deviation of Reference input current R1 = 10KΩ,R2 = ∞ IKA = 10mA
over temperature
Ta = Full range (Fig.2)
Minimum Cathode current for
VKA = VREF (Fig.1)
regulation
Off-state current
VKA = 36V, VREF = 0V (Fig.3)
V KA = VREF V KA = VREF
Dynamic output impedance (Note 4) ∆IKA = 0.1mA ~ 15mA
Frequency ≤ 1KHz (Fig.1)
SYMBOL MIN.
TYP. MAX. UNIT
VREF
2.470 2.495 2.520
2.482
2.507
V
VREF
8.0
mV
∆VREF
-1.4
∆VKA
-1
-2
mV/V
IREF
1.4
3.5
µA
αIREF
0.4
1.2
µA
IKA(MIN)
0.19
0.5
mA
IKA(OFF)
0.1
1.0
µA
Z KA
0.2
0.5
Ω
20
-2.0 mV/V
VMAX
VDEV = VMAX - VMIN
VMIN
TI
TEMPERATURE
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T2
Rev.1.0 May.7, 2004
4/17
AP431/AP431A
Adjustable Precision Shunt Regulator
Note 3. 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
) ⋅10 6
VREF (25°C)
……………………..……………….. ( ppm
)
=
°C
T2 − T1
(
α VREF
Where:
T2 – T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Note 4. The dynamic output impedance, RZ, is defined as:
Z KA =
∆ V KA
∆ IKA
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:
'
Z KA =
∆v
≈ Z KA
∆i
(1 +
R1
)
R2
„ Test Circuits
Input
IN
VKA
IKA
IKA
VKA
R1
VREF
IN
R2
VKA
IREF
IZ(OFF)
VREF
Note:VKA=VREF(1+R1/R2)+IREF× R1
Fig1. Test Circuit for V KA= VREF
Fig2. Test circuit for V KA>VREF
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Fig3. Test Circuit for off-state Current
Rev.1.0 May.7, 2004
5/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Typical Performance Characteristics
Cathode current Vs Cathode Voltage
Cathode current (uA) Vs Cathode Voltage
600
VKA=Vref
Ta=25oC
Cathode current(uA)
Cathode current(mA)
100
0
-100
0.5
-0.5
Cathode Voltage(v)
-1.5
1.5
200
0
-0.5
0
0.5
1.5
1
Cathode Voltage(v)
2
2.5
Reference input current Vs free Temperature
Reference input current (uA)
Reference Voltage Vs Free-Air Temperature
2500
Reference Voltage(mV)
400
-200
-1
2.5
VKA=Vref
Ta=25oC
2495
2490
2485
2480
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Free-Air Tempeture (oC)
2
1.8
R1=10K
IKA=10mA
1.6
1.4
1.2
1
-50
-25
0
25
50
75
Free-Air Temperature(oC)
100
125
Change in Reference Voltage (mv)
Change in Reference Voltage vs Cathode Voltage
0
-2
IKA=10mA
Ta=25oC
-4
-6
-8
-10
-12
0
5
10
15
20
Cathode Voltage (V)
25
30
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Rev.1.0 May.7, 2004
6/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Typical Performance Characteristics(Continued)
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
IKA=10mA
TA=25oC
50
Output
IKA
15KΩ
40
+
9µF
30
232Ω
+
-
AV-Small Signal Voltage Amplification (dB)
60
-
8.25KΩ
GND
20
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
10
0
1K
10K
100K
f-Frequency-Hz
1M
10M
REFERENCE IMPEDANCE vs. FREQUENCY
∣ZKA∣—Reference Impedance —Ω
100
IKA=10mA
TA=25oC
1KΩ
Output
I KA
10
50Ω
+
GND
1
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
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Rev.1.0 May.7, 2004
7/17
AP431/AP431A
Adjustable Precision Shunt Regulator
PULSE RESPONSE
6
TA=25oC
Input
Input and Output Voltage-V
5
220Ω
4
Pulse
Generator
f=100kHz
3
Output
50Ω
Output
GND
2
TEST CIRCUIT FOR PULSE RESPONSE
1
0
-1
0
1
2
3
4
5
6
7
t-Time-µ S
STABILITY BOUNDARY CONDITIONS †
150Ω
100
o
IKA-Cathode Current-mA
A VKA=Vref
TA=25 C
90
B VKA=5V
80
C VKA=10V
D VKA=15V
B
50
CL
Stable
70
60
I KA
+
-
VBATT
C
Stable
TEST CIRCUIT FOR CURVE A
A
40
30
D
I KA
20
10
CL
0
0.001
150Ω
R1=10KΩ
R2
0.01
0.1
1
C L-Load Capacitance-µF
10
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 V KA and I KA conditions with C L =0.V BATT and
CL were then adjusted to determine the ranges of stability.
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+
-
VBATT
TEST CIRCUIT FOR CURVE B, C, AND D
Rev.1.0 May.7, 2004
8/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Application Examples
VIN
V IN
RCL
R
VIN
R1B
R1A
ON
R2A
R2B
+
OFF
LED on when Low Limit<VIN<High Limit
Low Limit ≈ VREF (1+R1B/R2B)
High Limit ≈ VREF (1+R1A/R2A)
V IN
Delay = RC x ln(
)
VIN -VREF
Fig.5 Delay Timer
Fig.4 Voltage Monitor
VIN
IOUT
IOUT
VIN
IOUT = VREF / RCL
Fig.6 Current Limiter or Current Source
VOUT
VIN
R1
R1
R2
R2
RS
LIMIT
VOUT = (1 + R1/R2) x VREF
IOUT = VREF / RS
Fig.7 Constant-Current Sink
VOUT
PUSE
Fig.8 Higher-Current Shunt Regulator
(1 + R1/R2) x VREF
Fig.9 Crow Bar
VIN
R1A
R1B
+
R2A
Low Limit
High Limit
Output ON when
Low Limint < VIN< High Limit
VBE
R2B
VREF (1 + R1B/R2B) +VBE
VREF(1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
Anachip Corp.
www.anachip.com.tw
Rev.1.0 May.7, 2004
9/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Package Diagrams
(1) SOT89-3L Package Outline Dimension
L
HE
E
D1
e1
e
50(2x)
80(2x)
D
A
c
b
Symbol
A
b
b1
C
D
D1
e
e1
E
HE
L
b1
b
Dimensions In Millimeters
Min.
1.40
0.36
0.41
0.35
4.40
1.40
2.90
1.45
2.40
3.94
0.80
Nom.
1.50
0.42
0.47
0.39
4.50
1.60
3.00
1.50
2.50
-
Max.
1.60
0.48
0.53
0.43
4.60
1.75
3.10
1.55
2.60
4.25
1.20
Anachip Corp.
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Dimensions In Inches
Min.
0.055
0.014
0.016
0.014
0.173
0.055
0.114
0.057
0.094
0.155
0.031
Nom.
0.059
0.016
0.043
0.015
0.177
0.062
0.118
0.059
0.098
-
Max.
0.063
0.018
0.051
0.017
0.181
0.069
0.122
0.061
0.102
0.167
0.047
Rev.1.0 May.7, 2004
10/17
AP431/AP431A
Adjustable Precision Shunt Regulator
(2) TO92-3L Package Outline Dimension
A1
A
b
b1
b
D
e
E
Symbol
A
A1
b
b1
D
E
L
e
L
Dimensions In Millimeters
Min.
Nom.
Max.
3.302
3.556
3.810
1.016
0.330
0.381
0.432
0.406
0.457
0.506
4.445
4.572
4.699
4.445
4.572
4.699
13.00
15.500
1.150
1.270
1.390
Anachip Corp.
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Dimensions In Inches
Min.
Nom.
Max.
0.130
0.140
0.150
0.040
0.013
0.015
0.017
0.016
0.018
0.020
0.175
0.180
0.185
0.175
0.180
0.185
0.512
0.610
0.045
0.050
0.055
Rev.1.0 May.7, 2004
11/17
AP431/AP431A
Adjustable Precision Shunt Regulator
(3) SOT23-5L Package Outline Dimension
D
e1
θ1(4x)
4
5
E1
A
E
0.10 C
5x
A2
Seating Plane
A1
1
2
θ 2(4x)
3
b
e
With
Plating
b1
C
C1
Gauge Plane
0.25 mm
θ
Base
Metal
L
b
Symbol
L1
Dimensions In Millimeters
Min.
Nom.
Max.
Dimensions In Inches
Min.
Nom.
Max.
A
1.05
1.20
1.35
0.041
0.047
0.053
A1
0.05
0.10
0.15
0.002
0.004
0.006
A2
1.00
1.10
1.20
0.039
0.043
0.047
b
0.25
-
0.55
0.010
-
0.022
b1
0.25
0.40
0.45
0.010
0.016
0.018
c
0.08
-
0.20
0.003
-
0.008
c1
0.08
0.11
0.15
0.003
0.004
0.006
D
2.70
2.85
3.00
0.106
0.112
0.118
E
2.60
2.80
3.00
0.102
0.110
0.118
E1
1.50
1.60
1.70
0.059
0.063
0.067
L
0.35
0.45
0.55
0.014
0.018
0.022
L1
0.60 Ref.
0.024 Ref.
e
0.95 Bsc.
0.037 Bsc.
e1
θ
0o
1.90 Bsc.
5o
10o
0o
0.075 Bsc.
5o
10o
θ1
3o
5o
7o
3o
5o
7o
θ2
6o
8o
10o
6o
8o
10o
Anachip Corp.
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Rev.1.0 May.7, 2004
12/17
AP431/AP431A
Adjustable Precision Shunt Regulator
(4) SOT23-3L Package Outline Dimension
E
HE
2
1
3
e
A
A1
A2
b
C
D
E
e
HE
L
Dimensions In Millimeters
Min.
1.00
0.00
1.00
0.35
0.10
2.70
1.40
1.70
2.40
0.30
Nom.
1.20
1.15
0.175
2.90
1.60
2.00
2.70
-
L
C
A1
b
Symbol
A
A2
D
Max.
1.40
0.10
1.30
0.50
0.25
3.10
1.80
2.30
3.00
0.55
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Dimensions In Inches
Min.
0.039
0.000
0.039
0.014
0.004
0.106
0.055
0.067
0.094
0.012
Nom.
0.047
0.045
0.007
0.114
0.063
0.079
0.106
-
Max.
0.055
0.004
0.051
0.020
0.010
0.122
0.071
0.091
0.118
0.022
Rev.1.0 May.7, 2004
13/17
AP431/AP431A
Adjustable Precision Shunt Regulator
H
E
(5) SOP-8L Package Outline Dimension
L
VIEW "A"
D
0.015x45
7 (4X)
e
B
A1
C
A
A2
7 (4X)
VIEW "A"
y
Symbol
A
A1
A2
B
C
D
E
e
H
L
y
θ
Dimensions In Millimeters
Min.
Nom.
Max.
1.40
1.60
1.75
0.10
0.25
1.30
1.45
1.50
0.33
0.41
0.51
0.19
0.20
0.25
4.80
5.05
5.30
3.70
3.90
4.10
1.27
5.79
5.99
6.20
0.38
0.71
1.27
0.10
0O
8O
Anachip Corp.
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Dimensions In Inches
Min.
Nom.
Max.
0.055
0.063
0.069
0.040
0.100
0.051
0.057
0.059
0.013
0.016
0.020
0.0075
0.008
0.010
0.189
0.199
0.209
0.146
0.154
0.161
0.050
0.228
0.236
0.244
0.015
0.028
0.050
0.004
0O
8O
Rev.1.0 May.7, 2004
14/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ Taping Information
(1)TO92 TAPING
M
Ho
∆h
A
T
Po
Do
Symbol
Po
M
Ho
Do
A
Δh
T
F1
F2
Min.
12.4
2.0
15.5
0.0
2.4
2.4
Millimeters
Typ.
12.7
2.5
16.0
4.0
6.0
18.0
2.5
2.5
Max.
13.0
3.0
16.5
1.0
2.9
2.9
F2 F1
Min.
0.488
0.079
0.610
0.000
0.094
0.094
Inches
Typ.
0.500
0.098
0.630
0.157
0.236
0.709
0.098
0.098
Max.
0.512
0.118
0.650
0.039
0.114
0.114
40mm
205mm
E
330mm
90 ±1mm
30 ±1mm
53 ±2mm
45mm
76 ±1mm
360 ±2mm
Anachip Corp.
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Rev.1.0 May.7, 2004
15/17
AP431/AP431A
Adjustable Precision Shunt Regulator
(2)TO92 TAPING
H2
H2
H2A
H2A
D2
A
H3
L
H4
H
L1
W1
H1
W
D
T2
T
T1
F1
F2
D1
P1
P
P2
Millimeters
Min.
Typ.
A
3.18
7.59
D
3.8
4
D1
0.36
0.445
D2
F1,F2
2.4
2.5
F1-F2
0.30
H
15.5
16
H1
8.5
9
H2
H2A
H3
H4
L
L1
2.5
P
12.5
12.7
P1
5.95
6.35
P2
50.3
50.8
T
T1
T2
0.36
0.52
W
17.5
18.25
W1
5
6
----*
253
254
----* = every 20 pcs distance.
Symbol
Max.
12
4.2
0.53
9.0
2.7
16.5
9.5
0.5
0.5
27
20
11
12.9
6.75
51.3
0.55
1.42
0.68
19
7
255
Anachip Corp.
www.anachip.com.tw
Min.
0.125
0.150
0.014
0.094
0.610
0.335
0.098
0.492
0.234
1.980
0.014
0.689
0.197
9.961
Inches
Typ.
0.299
0.157
0.018
0.098
±0.012
0.630
0.354
0.500
0.250
2.000
0.020
0.719
0.236
10.000
Max.
0.472
0.165
0.021
0.354
0.106
0.650
0.374
0.020
0.020
1.063
0.787
0.433
0.508
0.266
2.020
0.022
0.056
0.027
0.748
0.276
10.039
Rev.1.0 May.7, 2004
16/17
AP431/AP431A
Adjustable Precision Shunt Regulator
„ BOX Dimension
41
197
330
556
37.5
38.5
40
53
195
40
330
40.5
811.5
40.5
39.5
6
18.68
195
24
4.68
40
70
43
18.18
16.67
unit:mm.
Anachip Corp.
www.anachip.com.tw
Rev.1.0 May.7, 2004
17/17
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