Diodes AP432ARL-A Adjustable precision shunt regulator Datasheet

AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
General Description
Features
•
•
•
•
•
•
•
•
•
•
•
The AP432/432A are 3-terminal adjustable precision shunt
regulators with guaranteed stable temperature over the
applicable extended commercial temperature range. The output
voltage may be set at any level greater than 1.24\/ (VREF) up to
20V 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
AP432 : 1.24V ± 1%
AP432A : 1.24V ± 0.5%
Sink current capability: 200mA
Minimum cathode current for regulation: 150µA
o
Equivalent full-range temp coefficient: 30 ppm/ C
Fast turn-on response
Low dynamic output impedance: 0.2Ω
Programmable output voltage to 20V
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
AP432/432A 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
A P 4 3 2 X X X X
Package
Reference Voltage
Blank :
V
:
SA :
:
W
:
R
Q
:
SR :
Tolerance:
Blank : +/- 1%
A
: +/- 0.5%
Note:
SOP-8L
TO92-3L
SOT23
SC59
SC59
SOT25
SOT23R
L : Lead Free
G : Green (Note 1)
Packing
-B : Bulk
-7/-13 : Taping
-A : Ammo Box (Note 3)
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.
Device
(Note 4)
Lead-free
Lead-Free
7” Tape and Reel
13” Tape and Reel
Ammo Box
Package Packaging
Part Number
Part Number
Part Number
Code
(Note 5) Quantity
Quantity
Quantity
Suffix
Suffix
Suffix
AP432(A)SA
SA
SOT23
AP432(A)SR
SR
SOT23R
AP432(A)Q
Q
SOT25
AP432(A)W
W
SC59
AP432(A)R
R
SC59
AP432(A)
AP432(A)V
V
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
3000/Tape
& Reel
-7
NA
NA
NA
NA
-7
NA
NA
NA
NA
-7
NA
NA
NA
NA
-7
NA
NA
NA
NA
-7
NA
NA
NA
NA
-13
NA
NA
NA
2000/Box
-A
SOP-8L
NA
NA
TO92-3L
NA
NA
2500/Tape &
Reel
NA
Lead-free
Notes:
3. Ammo Box is for TO92-3 Spread Lead.
4. Suffix “A” denotes AP432A 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.
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Pin Assignment
Pin Configuration (Top View)
Package
NC
SOT25
1
NC
2
CATHODE
3
5
AP432/AP432A Rev. 6
3
REF
2
CATHODE
3
CATHODE
2
REF
1
SOT23
SOT23R
1
3 Cathode
2 Anode
+
TO92-3L
Pin Configuration (Top View)
CATHODE
1
8
REF
ANODE
2
7
ANODE
ANODE
3
6
ANODE
4
5
NC
NC
+
ANODE
REF
+
SC-59
( Package
Code-R)
ANODE
ANODE
SOP-8L
4
SC-59
( Package
Code-W)
Package
1 REF
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3
REF
2
CATHODE
3
CATHODE
2
REF
ANODE 1
ANODE 1
MARCH 2007
© Diodes Incorporated
AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Application Circuit
V OUT
V IN
+
R1
C in
+
C out
A P 432
R2
V O U T = (1+ R 1/R 2)V R E F
P recision R egulator
Block Diagram
REF (R)
+
Cathode (C)
VREF
Anode (A)
Symbol
Cathode (C)
REF (R)
Anode (A)
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Absolute Maximum Ratings
Symbol
Vcv
ICC
IREF
TOP
TST
PD
Parameter
Cathode Voltage
Continuous Cathode Current
Reference Input Current
Operating Temperature
Storage Temperature
SOT23(R)
SOT25
Power Dissipation
SC59
(Notes 6, 7)
SOP-8L
TO92-3L
Rating
+20
-10 to +250
10
-20 to +85
-65 to +150
250
250
400
600
780
Unit
V
mA
mA
o
C
o
C
mW
mW
mW
mW
mW
Note: 6. TJ, max =150°C
7. Ratings apply to ambient temperature at 25°C
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics
Parameter
( TA = 25oC, V+ = +5.0V, unless otherwise stated )
Deviation of Reference Input Voltage over
Temperature (Note 8)
Test conditions
AP432
VKA = Vref,
I KA = 10mA (Fig.1)
AP432A
VKA = VREF , IKA = 10mA ,
Ta = full range
(Fig.1)
Ratio of the Change in Reference Voltage to
the Change in Cathode Voltage
IKA = 10mA
(Fig.2)
Reference Voltage
Reference Input Current
Deviation of Reference Input Current over
Temperature
Minimum Cathode Current for Regulation
Off-state Current
Dynamic Output Impedance (Note 9)
VKA = 20 ~VREF
Symbol
Unit
1.24
Max.
1.252
1.246
3.0
20
mV
-1.4
-2.0
mV/V
IREF
1.4
3.5
µA
αIREF
0.4
1.2
µA
IKA(min)
IKA(off)
0.15
0.1
0.3
1.0
mA
µA
Z KA
0.2
0.5
Ω
VREF
Min.
1.227
1.233
VREF
∆VREF
∆V
Typ.
V
KA
R1 = 10KΩ,R2 = ∞
IKA= 10mA (Fig.2)
R1 = 10KΩ,R2 = ∞
IKA = 10mA
Ta = Full range (Fig.2)
VKA = VREF (Fig.1)
VKA = 20V , VREF = 0V (Fig.3)
V KA = VREF
Frequency ≤ 1KHz (Fig.1)
VMAX
VDEV = VMAX - VMIN
VMIN
TI
Note:
Temperature
T2
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
) ⋅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.
9. The dynamic output impedance, RZ, is defined as:
Note:
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
AP432/AP432A Rev. 6
(1 +
R1
)
R2
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Test Circuits
Input
IN
VKA
IKA
IKA
VKA
R1
VREF
IN
R2
VKA
IREF
VREF
IZ(OFF)
Note:VKA=VREF(1+R1/R2)+IREFxR1
Fig 1. Test Circuit for VKA= VREF
AP432/AP432A Rev. 6
Fig 2. Test Circuit for VKA > VREF
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Fig 3. Test Circuit for Off-State Current
MARCH 2007
© Diodes Incorporated
AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
Small-Signal Voltage Amplification vs Frequency
IKA=10mA
TA=25oC
50
Output
IKA
15KΩ
40
+
9µF
232Ω
+
-
AV-Small Signal Voltage Amplification (dB)
60
30
-
8.25KΩ
GND
20
Test Circuit for Voltage Amplification
10
0
10K
1K
100K
f-Frequency-Hz
1M
10M
Reference Impedance vs Frequency
∣ZKA∣ Reference Impedance (Ω)
100
I KA=10mA
o
TA =25 C
1KΩ
Output
I KA
10
50Ω
+
GND
1
Test Circuit for Reference Impedance
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
150Ω
STABILITY BOUNDARY CONDITIONS†
100
90
IKA-Cathode Current-mA
80
TA=25oC
A VKA=Vref
I KA
B VKA=5V
C VKA=10V
D VKA=15V
CL
B
50
-
C
Stable
Test Circuit for Curve A
A
40
30
D
I KA
20
CL
0
0.001
150Ω
R1=10KΩ
10
R2
0.01
0.1
1
CL-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 VKA and I KA conditions with CL =0.V BATT and
CL were then adjusted to determine the ranges of stability.
AP432/AP432A Rev. 6
VBATT
Stable
70
60
+
7 of 12
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+
-
VBATT
Test Circuit for Curve B, C, and D
MARCH 2007
© Diodes Incorporated
AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Application Examples
VIN
V IN
R CL
R
R1B
R1A
ON
R2A
R2B
I OUT
V IN
+
OFF
LED on when Low Limit < V < High Limit
IN
(1+R1B/R2B)
Low Limit ≈ V
REF
(1+R1A/R2A)
High Limit ≈ V
Delay = RC x ln (
VIN
V -V
IN
)
I OUT = V REF / RCL
REF
REF
Fig. 5 Delay
Timer
Fig. 4 Voltage
Monitor
V IN
I OUT
Fig. 6 Current Limiter or Current
Source
V IN
V OUT
VIN
R1
R1
R2
R2
RS
LIMIT
V OUT = (1 + R1/R2) x VREF
I OUT = V REF / RS
Fig. 7 Constant-Current
Sink
V OUT
PUSE
Fig. 8 Higher-Current Shunt
Regulator
(1 + R1/R2) x VREF
Fig. 9 Crow Bar
VIN
R1A
R1B
+
R2A
Low Limit
High Limit
R2B
Output ON when
Low Limit <VIN < High Limit
V BE
V REF (1 + R1B/R2B) +VBE
V REF (1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(1) SOT23(R) /SOT25/SC59
(Top View)
Y : Year
M : Month (A~L)
X : L : Lead Free
G :Green
XX Y M X
Marking Code
SOT23(R) /SOT25/SC59
(2) SOP-8L
(Top view)
8
5
Accuracy
Blank: 1.24 ±1%
A: 1.24 ±0.5%
Logo
AP432 X
YY WW X
Part Number
4
1
L : Lead-Free Package
G : Green
WW : Nth week
YY : Year
SOP-8L
(3) TO92-3
(Top View)
Accuracy
Blank: 1.24 + 1%
A: 1.24 + 0.5%
AP432
X Y WW X X
L : Lead Free
Y : Year
WW :Nth week
X : Internal code
TO92-3L
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(Continued)
Marking Code Table
Device
AP432SA
AP432ASA
AP432SR
AP432ASR
AP432Q
AP432AQ
AP432W
AP432AW
AP432R
AP432AR
Package (Note 10)
Marking Code
Date Code
D3
D4
D7
D8
B7
B8
B3
B4
B5
B6
YM
YM
YM
YM
YM
YM
YM
YM
YM
YM
SOT23
SOT23
SOT23R
SOT23R
SOT25
SOT25
SC59
SC59
SC59
SC59
Note: 10. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
AP432/AP432A Rev. 6
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AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information
( All Dimensions in mm )
(1) SOT25
(2) SC59
2.70/3.00
Typ 2.80
TOP VIEW
2.70/
3.00
1.90
2.90/3.10
Typ 3.00
2.90/3.10
1.00/1.30
Typ 1.10
0.013/0.10
Typ 0.05
1.50/
1.70
TOP VIEW
1.50/1.70
Typ 1.60
0.35/0.50
1.00/
1.30
0.10/0.20 Typ 0.15
Typ Typ
0.95 0.55
0.013/0.10
0.35/0.55
Typ 0.40
0.10/0.20
0.95
0.35/0.55
0°/8°
(3) SOT23(R)
(4) SOP-8L
0.37/0.51
1.20/1.40
2.30/2.50
8
1
5
5.90/6.10
Typ 6.00
°
4
TOP VIEW
0.45/0.60
0.89/
1.03
1.80/2.00
9°
1.40/1.50
Typ 1.45
0.45/0.61
R
1
0.
0º/8º
AP432/AP432A Rev. 6
0.08/0.25
Typ 0.15
4.85/4.95
Typ 4.90
1.27
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°
°
45
0.085/0.180
0.35
3
0.013/
0.10
3.80/3.90
Typ 3.85
4
0.903/
1.10
2.80/3.00
0.30/0.50
Typ 0.40
(A
ll s
i de
)
°
3.85/3.95
Typ 3.90
0.60/0.70
Typ 0.65
0.15/0.25
Typ 0.20
0.60/
0
Typ .80
0. 70
MARCH 2007
© Diodes Incorporated
AP432/AP432A
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
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.
AP432/AP432A Rev. 6
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