AP432/AP432A Adjustable Precision Shunt Regulator Features General Description - Precision reference voltage AP432 : 1.24V ± 1% AP432A : 1.24V ± 0.5% - Sink current capability: 200mA. - Minimum cathode current for regulation: 150µA - Equivalent full-range temp coefficient: 30 ppm/oC - Fast turn-on Response. - Low dynamic output impedance: 0.2Ω - Programmable output voltage to 20v - Low output noise - Packages: SOT89, SOT23, SOT25, SOP8 and TO92 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. 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 X Operating Temp. Range Blank : I : -20 oC~85oC -40 oC~85oC Reference Voltage Lead Free Package 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 + R1 Cin + Cout AP432 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 1/16 AP432/AP432A Adjustable Precision Shunt Regulator Block Diagram Symbol Cathode (C) REF (R) + VREF Cathode (C) - 1.24V REF (R) Anode (A) Anode (A) Pin Configuration Order Number Pin Configuration (Top View) AP432Y AP432 AY AP432IY AP432IAY (SOT89) 3 Cathode AP432R AP432AR AP432IR AP432IAR (SOT23) 2 Anode 1 REF AP432V AP432 AV AP432IV AP432IAV (TO92) + AP432W AP432AW AP432IW AP432IAW (SOT23) 3 Cathode + 2 Anode + AP432 AP432A AP432I AP432IA (SOP) Order Number 1 REF Cathode 1 8 REF Anode 2 7 Anode Anode 3 6 Anode NC 4 5 NC AP432 Q AP432 AQ AP432IQ AP432IAQ (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 2/16 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 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 AP432X 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: A : 1.24 ± 1% 1.24 ± 0.5% (3) TO92 ( Top view ) Temp. grade Accuracy Blank: 1.24 ± 1% A : 1.24 ± 0.5% Date code AP432X 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 3/16 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 o Note 1: TJ, max =150 C. . Note 2: Ratings apply to ambient temperature at 25oC. Electrical Characteristics (Ta=25oC, unless otherwise specified.) Parameter Test conditions VKA = Vref, AP432 Reference voltage I KA = 10mA AP432A (Fig.1) Deviation of reference input voltage VKA = VREF , IKA = 10mA , over temperature (Note 3) Ta = full range (Fig.1) Ratio of the change in reference IKA = 10mA voltage to the change in cathode VKA = 20 ~VREF (Fig.2) voltage R1 = 10KΩ,R2 = ∞ Reference input current IKA= 10mA (Fig.2) R1 = 10KΩ,R2 = ∞ Deviation of reference input current IKA = 10mA over temperature Ta = Full range (Fig.2) Minimum cathode current for VKA = VREF (Fig.1) regulation Off-state current VKA = 20V , VREF = 0V (Fig.3) V KA = VREF Dynamic output impedance (Note 4) ∆IKA = 0.1mA ~ 15mA Frequency ≤ 1KHz (Fig.1) Anachip Corp. www.anachip.com.tw Symbol VREF Min. 1.227 1.233 Typ. 1.24 Max. 1.252 1.246 Unit V 3.0 20 mV -1.4 -2.0 mV/V IREF 1.4 3.5 µA αIREF 0.4 1.2 µA IKA(min) 0.15 0.3 mA IKA(off) 0.1 1.0 µA Z KA 0.2 0.5 Ω VREF ∆VREF ∆V KA Rev.1.0 May.7, 2004 4/16 AP432/AP432A Adjustable Precision Shunt Regulator VMAX VDEV = VMAX - VMIN VMIN TI T2 TEMPERATURE 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: ( αVREF = VDEV VREF (25°C) ) × 10 6 ……………………..……………….. ( ppm T2 − T1 °C 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: ∆ 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 VKA IKA IKA VKA R1 VREF R2 VKA IREF VREF V KA = V REF (1 + Fig1. Test Circuit for V KA= VREF IN IZ(OFF) R1 ) + IREF ⋅ R1 R2 Fig2. Test circuit for V KA＞VREF Anachip Corp. www.anachip.com.tw Fig3. Test Circuit for off-state Current Rev.1.0 May.7, 2004 5/16 ) 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 30 232Ω + - AV -Small Signal Voltage Amplification (dB) 60 - 8.25KΩ GND 20 TEST CIRCUIT FOR VOLTAGE AMPLIFICATION 10 0 10K 1K 100K 1M f-Frequency-Hz 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 STABILITY BOUNDARY CONDITIONS † 100 90 IKA-Cathode Current-m A 80 150O TA=25 oC A VKA=Vref I KA B VKA=5V C VKA=10V D VKA=15V B Stable 70 60 50 CL + - VBATT C Stable A TEST CIRCUIT FOR CURVE A 40 30 D I KA 20 10 CL 0 0.001 150O R1=10KO 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 CL =0.V BATT and CL were then adjusted to determine the ranges of stability. Anachip Corp. www.anachip.com.tw + - VBATT TEST CIRCUIT FOR CURVE B, C, AND D Rev.1.0 May.7, 2004 6/16 AP432/AP432A 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) ×V REF IOUT = VREF / RS Fig.7 Constant-Current Sink VOUT PUSE Fig.8 Higher-Current Shunt Regulator (1 + R1/R2) ×V REF 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 7/16 AP432/AP432A 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. www.anachip.com.tw 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 8/16 AP432/AP432A 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. www.anachip.com.tw 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 9/16 AP432/AP432A 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 Dimensions In Inches Min. Nom. Max. 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 1.90 Bsc. 0.075 Bsc. 0o 5o 10o 0o 5o 10o θ1 3o 5o 7o 3o 5o 7o θ2 o o o o 10 6 8 10 o Anachip Corp. www.anachip.com.tw 6 8 o Rev.1.0 May.7, 2004 10/16 AP432/AP432A 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 Anachip Corp. www.anachip.com.tw 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 11/16 AP432/AP432A 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. www.anachip.com.tw 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 12/16 AP432/AP432A 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 Anachip Corp. www.anachip.com.tw 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 Rev.1.0 May.7, 2004 13/16 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 Rev.1.0 May.7, 2004 14/16 AP432/AP432A Adjustable Precision Shunt Regulator (2) TO92 TAPING H2 H2 H2A H2A D2 A H3 L H4 L1 H1 H W1 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 15/16 AP432/AP432A Adjustable Precision Shunt Regulator BOX Dimension 41 330 556 38.5 197 40 195 40 53 37.5 40.5 811.5 330 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 16/16