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AP432/AP432A
Adjustable Precision Shunt Regulator Features
- Precision reference voltage AP432 : 1.24V 1% AP432A : 1.24V 0.5% - Sink current capability: 200mA. - Minimum cathode current for regulation: 150A - Equivalent full-range temp coefficient: 30 ppm/oC - Fast turn-on Response. - Low dynamic output impedance: 0.2 - Programmable output voltage to 20v - Low output noise - Packages: SOT89, SOT23, SOT25, SOP8 and TO92
General Description
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 0.2. 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 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
AP432XXXXX
Operating Temp. Range Blank : -20 oC~85oC I : -40 oC~85oC
Reference Voltage
Package
Lead Free
Packing
Blank : Normal Blank : SOP-8L Tolerance: Blank : Tube or bulk : SOT89-3L L : Lead Free Package A Blank : 1.24V(+/-) 1% Y : Taping : TO92-3L A : 1.24V(+/-) 0.5% V W : SOT23-3L R : SOT23-3L Q : SOT25
Typical Application Circuit
VIN VOUT
+
Cin AP432
R1
+
Cout
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.1.1 Sep.23, 2004 1/16
AP432/AP432A
Adjustable Precision Shunt Regulator Block Diagram
REF (R) + Cathode (C) VREF
Symbol
Cathode (C)
1.24V
REF (R)
Anode (A)
Anode (A)
Pin Configuration
Order Number AP432Y AP432 AY AP432IY AP432IAY (SOT89) Pin Configuration (Top View) 3 Cathode 2 Anode 1 REF Order Number AP432R AP432AR AP432IR AP432IAR (SOT23) Pin Configuration (Top View)
3 Cathode Anode 1 2 REF
AP432 AP432A AP432I AP432IA (SOP)
Cathode Anode Anode NC
1 2 3 4
Anachip Corp. www.anachip.com.tw 2/16
+ + +
AP432V AP432 AV AP432IV AP432IAV (TO92)
3 Cathode 2 Anode 1 REF
AP432W AP432AW AP432IW AP432IAW (SOT23)
3 REF Anode 1 2 Cathode
8 7 6 5
REF Anode Anode NC
AP432 Q AP432 AQ AP432IQ AP432IAQ (SOT25)
NC NC Cathode
1 2 3
5 4
Anode REF
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Marking Information
(1) SOT23 / SOT25 / SOT89 P/N Type AP432Y AP432AY AP432IY AP432IAY AP432W AP432AW AP432IW AP432IAW AP432R AP432AR AP432IR AP432IAR AP432Q AP432AQ AP432IQ AP432IAQ XX B1 B2 BA BB B3 B4 BC BD B5 B6 BE BF B7 B8 BG BH
(Top View) SOT23/SOT25 XX YM X XX: P/N Type Date code Y : Year M : Month(A~L) X: Blank : normal L : Lead Free Package SOT89 XX YMX
(2) SOP
( Top view ) Logo
Date code
YY : Year WW: Nth week
Temp. grade
AP432X X YYWW X
Blank: -20oC ~ +85oC I : -40oC ~ +85oC
Lead Free
Blank: normal L: Lead Free Package
Accuracy
Blank: A : 1.24 1% 1.24 0.5%
(3) TO92
( Top view )
Temp. grade Accuracy
Blank: 1.24 1% A : 1.24 0.5% Blank: -20oC ~ +85oC I : -40oC ~ +85oC
AP432X X YWW X X
Date code
Y : Year WW: Nth week
Internal code
Lead Free
Blank: normal L: Lead Free Package
Anachip Corp. www.anachip.com.tw 3/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Absolute Maximum Ratings
Cathode Voltage........................................................................................................20V Continuous cathode current .....................................................................................-10mA ~ 250mA Reference input current range ...................................................................................................10mA Operating temperature range (AP432) ........................................................................ -20oC ~ 85oC (AP432I............................................................................... -40oC~85oC Lead Temperature....................................................................................................260oC Storage Temperature ............................................................................................-65oC ~ 150oC Power Dissipation (Notes 1. 2) SOT89 .................................................................... 0. 80W TO92............................................................... ..... 0.78W SOT23 .................................................................. 0.25W SOT25....................................................................0.25W SOP..................................................................... 0.6W Note 1: TJ, max =150oC. . Note 2: Ratings apply to ambient temperature at 25oC.
Electrical Characteristics (Ta=25oC, unless otherwise specified.)
Parameter Reference voltage Test conditions Symbo l Min. 1.227 1.233 Typ. 1.24 3.0 -1.4 1.4 0.4 0.15 0.1 0.2 Max. 1.252 1.246 20 -2.0 3.5 1.2 0.3 1.0 0.5 Unit V mV mV/V A A mA A
VKA = Vref, AP432 VREF I KA = 10mA AP432A (Fig.1) Deviation of reference input voltage VKA = VREF , IKA = 10mA , VREF over temperature (Note 3) Ta = full range (Fig.1) Ratio of the change in reference VREF IKA = 10mA VKA = 20 ~VREF V voltage to the change in cathode (Fig.2) KA voltage R1 = 10K,R2 = IREF Reference input current IKA= 10mA (Fig.2) R1 = 10K,R2 = Deviation of reference input current IREF IKA = 10mA over temperature Ta = Full range (Fig.2) Minimum cathode current for VKA = VREF (Fig.1) IKA(min) regulation Off-state current VKA = 20V , VREF = 0V (Fig.3) IKA(off) V KA = VREF Dynamic output impedance (Note 4) IKA = 0.1mA ~ 15mA Z KA Frequency 1KHz (Fig.1)
Anachip Corp. www.anachip.com.tw 4/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
VMAX VDEV = VMAX - VMIN VMIN
TI
TEMPERATURE
T2
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 VREF is defined as:
( VDEV VREF (25C) ) x 10
6
VREF =
T2 - T1
.............................................. ( ppm
C
)
Where: T2 - T1 = full temperature change. VREF can be positive or negative depending on whether the slope is positive or negative. Note 4. The dynamic output impedance, RZ, is defined as: V KA Z KA = I KA 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 ZKA = ZKA i (1 + R1 ) R2
Test Circuits
Input IN IN
VKA IKA R1 VREF IREF VREF
IKA VKA
VKA
R2
IZ(OFF)
V KA = V REF (1 +
Fig1. Test Circuit for V KA= VREF
R1 ) + IREF R1 R2
Fig3. Test Circuit for off-state Current
Fig2. Test circuit for V KAVREF
Anachip Corp. www.anachip.com.tw 5/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Typical Performance Characteristics
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
60
AV -Small Signal Voltage Amplification (dB)
50 40 30 20 10 0 1K 10K
IKA=10mA TA=25oC 15K 9F
Output IKA 232
+ 8.25K -
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
f-Frequency-Hz
100K
1M
10M
REFERENCE IMPEDANCE vs. FREQUENCY
100
ZKA--Reference Impedance --
IKA=10mA TA=25oC
10
50 +
1
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.1 1K 10K 100K 1M 10M
f-Frequency-Hz
STABILITY BOUNDARY CONDITIONS
100 90 80 IKA-Cathode Current-m A 70 60 50 40 30 20 10 0 0.001 0.01 0.1 1 C L-Load Capacitance-F 10
CL R2
A VKA=Vref B VKA=5V C VKA=10V D VKA=15V B
TA=25 oC
Stable
CL
Stable A
C
TEST CIRCUIT FOR CURVE A
D
R1=10KO
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 CL =0.V BATT and CL were then adjusted to determine the ranges of stability.
TEST CIRCUIT FOR CURVE B, C, AND D
Anachip Corp. www.anachip.com.tw 6/16
1K
150O I KA + I KA
+
GND
Output I KA
GND
VBATT
150O
+ -
VBATT
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Application Examples
VIN RCL R R1A R1B VIN IOUT
V IN
ON R2A R2B OFF
+
LED on when Low Limit VINHigh Limit Low Limit VREF (1+R1B/R2B) High Limit VREF (1+R1A/R2A)
V IN Delay = RC x ln( ) VIN -VREF
IOUT = VREF / RCL
Fig.4 Voltage Monitor
Fig.5 Delay Timer
Fig.6 Current Limiter or Current Source
VIN
IOUT
VIN
VOUT
VIN
PUSE R1
VOUT
R1
RS
R2
R2
IOUT = VREF / RS
VOUT = (1 + R1/R2) xV REF
LIMIT
(1 + R1/R2) xV REF
Fig.7 Constant-Current Sink
Fig.8 Higher-Current Shunt Regulator
Fig.9 Crow Bar
VIN R1A R1B Output ON when Low Limint VINHigh Limit
+
R2A
R2B
VBE
Low Limit High Limit
VREF(1 + R1B/R2B) +V BE VREF(1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
Anachip Corp. www.anachip.com.tw 7/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Package Diagrams
(1) SOT89-3L Package Outline Dimension
1.7
D1
E
HE
0.4 1.9 1.3 L
e1 e 80(2x) D
1.5 0.9 Land Pattern Recommendation (Unit: mm) 50(2x)
A
c b b1 b
Symbol A b b1 C D D1 e e1 E HE L
Dimensions In Millimeters Min. 1.40 0.36 0.41 0.35 4.40 1.40 2.90 1.45 2.35 3.94 0.80 Nom. 1.50 0.42 0.47 0.39 4.50 1.60 3.00 1.50 2.48 Max. 1.60 0.48 0.53 0.43 4.60 1.75 3.10 1.55 2.60 4.25 1.20
Dimensions In Inches Min. 0.055 0.014 0.016 0.014 0.173 0.055 0.114 0.057 0.093 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
Anachip Corp. www.anachip.com.tw 8/16
2.7
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
(2) TO92-3L Package Outline Dimension
A1 A b1 D b e b
E
L
Symbol A A1 b b1 D E L e
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
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
Anachip Corp. www.anachip.com.tw 9/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
(3) SOT23-5L Package Outline Dimension
D e1
1(4x)
5
4 0.10 C 5x Seating Plane A1
2(4x)
E1
E
A
A2
1 e
2
3 b
With Plating
b1
C
C1
Gauge Plane 0.25 mm
Base Metal
b
L L1
Symbol A A1 A2 b b1 c c1 D E E1 L L1 e e1 1 2
Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.25 0.08 0.08 2.70 2.60 1.50 0.35 Nom. 1.20 0.10 1.10 0.40 0.11 2.85 2.80 1.60 0.45 0.60 Ref. 0.95 Bsc. 1.90 Bsc. 0o 3o 6
o
Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.010 0.003 0.003 0.106 0.102 0.059 0.014 Nom. 0.047 0.004 0.043 0.016 0.004 0.112 0.110 0.063 0.018 0.024 Ref. 0.037 Bsc. 0.075 Bsc. Max. 0.053 0.006 0.047 0.022 0.018 0.008 0.006 0.118 0.118 0.067 0.022
Max. 1.35 0.15 1.20 0.55 0.45 0.20 0.15 3.00 3.00 1.70 0.55
5o 5o 8
o
10o 7o 10
o
0o 3o 6
o
5o 5o 8
o
10o 7o 10o
Anachip Corp. www.anachip.com.tw 10/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
(4) SOT23-3L Package Outline Dimension
2
1
3 e
D
A2
A
b
Symbol 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 Max. 1.40 0.10 1.30 0.50 0.25 3.10 1.80 2.30 3.00 0.55
A1
C
L
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
Anachip Corp. www.anachip.com.tw 11/16
Rev.1.1
HE
Sep.23, 2004
E
AP432/AP432A
Adjustable Precision Shunt Regulator
(5) SOP-8L Package Outline Dimension
E
H
L VIEW "A"
D 7 (4X) A2 A
0.015x45
7 (4X)
A1
e
B y
C
VIEW "A"
Symbol A A1 A2 B C D E e H L y
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
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
Anachip Corp. www.anachip.com.tw 12/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator Taping Information
(1)TO92 TAPING
M
h A
Ho
T
Do
Po
F2 F1
Symbol Po M Ho Do A h 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
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
Anachip Corp. www.anachip.com.tw 13/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
40mm 205mm
E
330mm 90 1mm
30 1mm
53 2mm
45mm
76 1mm 360 2mm
Anachip Corp. www.anachip.com.tw 14/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator
(2) TO92 TAPING
H2
H2
H2A
H2A A
D2
H3 H4 L1 H1
L
H W1 W
D T2 T T1 F1 F2 P1 P P2 D1
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
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
Anachip Corp. www.anachip.com.tw 15/16
Rev.1.1
Sep.23, 2004
AP432/AP432A
Adjustable Precision Shunt Regulator BOX Dimension
39.5 330
811.5 40.5 40.5 197 38.5 41 40 330
40
195
53
37.5 6 195 70 43
556 24 18.68 16.67 unit:mm.
4.68
18.18
Anachip Corp. www.anachip.com.tw 16/16
40
Rev.1.1
Sep.23, 2004

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