AP431QA

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 AP431XXXXX Operating Temp. Range Blank : I: -20 oC~85oC -40 oC~85oC Reference Voltage Tolerance: Blank : +/- 1% A : +/- 0.5% Package Lead Free 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 Typical Application Circuit VIN VOUT + Cin AP431 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.1.0 May.7, 2004 1/17 AP431/AP431A Adjustable Precision Shunt Regulator Block Diagram Symbol Cathode (C) REF (R) + Cathode (C) VREF REF (R) Anode (A) Anode (A) Pin Configuration Order Number AP431Y AP431 AY AP431IY AP431IAY (SOT89) Pin Configuration (Top View) 3 Cathode 2 Anode 1 REF Order Number AP431R AP431AR AP431IR AP431IAR (SOT23) Pin Configuration (Top View) 3 Cathode Anode 1 2 REF AP431 AP431A AP431I AP431IA (SOP) Cathode Anode Anode NC 1 2 3 4 Anachip Corp. www.anachip.com.tw 2/17 + + + AP431V AP431 AV AP431IV AP431IAV (TO92) 3 Cathode 2 Anode 1 REF AP431W AP431AW AP431IW AP431IAW (SOT23) 3 REF Anode 1 2 Cathode 8 7 6 5 REF Anode Anode NC AP431 Q AP431 AQ AP431IQ AP431IAQ (SOT25) NC NC Cathode 1 2 3 5 4 Anode REF Rev.1.0 May.7, 2004 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 (2) SOP XX A4 A5 AA AB A6 A7 AC AD A8 A9 AE AF A2 A3 AG AH (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 ( Top view ) Logo Date code YY : Year WW: Nth week AC AP431X X YYWW X 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% Blank: -20oC ~ +85oC I : -40oC ~ +85oC AP431X 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 3/17 Rev.1.0 May.7, 2004 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 SYMBOL MIN. TYP. MAX. UNIT 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) VREF VREF ∆VREF ∆VKA IREF αIREF IKA(MIN) IKA(OFF) 2.470 2.495 2.520 2.482 2.507 8.0 -1.4 -1 1.4 0.4 0.19 0.1 0.2 20 V mV -2.0 mV/V -2 3.5 1.2 0.5 1.0 0.5 mV/V µA µA mA µA Ω Z KA VMAX VDEV = VMAX - VMIN VMIN TI TEMPERATURE T2 Anachip Corp. www.anachip.com.tw 4/17 Rev.1.0 May.7, 2004 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: α VREF VDEV ) ⋅10 6 VREF (25°C) ……………………..……………….. ( ppm ) = °C T2 − T1 ( 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 IN VKA IKA R1 VREF IREF VREF IKA VKA VKA R2 IZ(OFF) Note:VKA=VREF(1+R1/R2)+IREF× R1 Fig1. Test Circuit for V KA= VREF Fig2. Test circuit for V KA＞VREF Fig3. Test Circuit for off-state Current Anachip Corp. www.anachip.com.tw 5/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator Typical Performance Characteristics Cathode current Vs Cathode Voltage 100 VKA=Vref Ta=25oC Cathode current(uA) 600 VKA=Vref Ta=25oC Cathode current (uA) Vs Cathode Voltage Cathode current(mA) 400 0 200 0 -100 -1.5 0.5 -0.5 Cathode Voltage(v) 1.5 2.5 -200 -1 -0.5 0 0.5 1.5 1 Cathode Voltage(v) 2 2.5 Reference Voltage Vs Free-Air Temperature 2500 Reference Voltage(mV) 2495 2490 2485 2480 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Free-Air Tempeture (oC) Reference input current Vs free Temperature Reference input current (uA) 2 1.8 1.6 1.4 1.2 1 -50 R1=10K IKA=10mA -25 0 25 50 75 Free-Air Temperature(oC) 100 125 Change in Reference Voltage vs Cathode Voltage Change in Reference Voltage (mv) 0 -2 -4 -6 -8 -10 -12 0 5 10 15 20 Cathode Voltage (V) 25 30 IKA=10mA Ta=25oC Anachip Corp. www.anachip.com.tw 6/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator Typical Performance Characteristics(Continued) 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 15KΩ 9µF Output IKA 232Ω + 8.25KΩ - TEST CIRCUIT FOR VOLTAGE AMPLIFICATION f-Frequency-Hz 100K 1M 10M REFERENCE IMPEDANCE vs. FREQUENCY 100 ∣ZKA∣—Reference Impedance —Ω IKA=10mA TA=25oC 10 50Ω + 1 TEST CIRCUIT FOR REFERENCE IMPEDANCE 0.1 1K 10K 100K 1M 10M f-Frequency-Hz Anachip Corp. www.anachip.com.tw 7/17 1KΩ + GND Output I KA GND Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator PULSE RESPONSE 6 TA=25oC 5 Input and Output Voltage-V Input 220Ω Output 4 Pulse Generator f=100kHz 50Ω 3 Output GND 2 TEST CIRCUIT FOR PULSE RESPONSE 1 0 -1 0 1 2 3 t-Time-µ S 4 5 6 7 STABILITY BOUNDARY CONDITIONS † 100 A VKA=Vref 90 80 IKA-Cathode Current-mA 70 60 50 40 30 20 10 0 0.001 0.01 0.1 1 C L-Load Capacitance-µ F 10 CL R2 150Ω o TA=25 C B VKA=5V C VKA=10V D VKA=15V B Stable CL I KA + - VBATT Stable A C TEST CIRCUIT FOR CURVE A D R1=10KΩ I KA 150Ω + - VBATT 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 c onditions with C L =0.V BATT a nd CL were then adjusted to determine the ranges of stability. TEST CIRCUIT FOR CURVE B, C, AND D Anachip Corp. www.anachip.com.tw 8/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator Application Examples V IN VIN RCL R R1A R1B VIN IOUT 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 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) x VREF LIMIT (1 + R1/R2) x VREF Fig.7 Constant-Current Sink Fig.8 Higher-Current Shunt Regulator Fig.9 Crow Bar VIN R1A R1B Output ON when Low Limint < VIN< High Limit + R2A R2B VBE Low Limit High Limit VREF (1 + R1B/R2B) +VBE VREF(1 + R1A/R2A) Fig.10 Over-Voltage / Under-Voltage Protection Circuit Anachip Corp. www.anachip.com.tw 9/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator Package Diagrams (1) SOT89-3L Package Outline Dimension D1 E e1 e 50(2x) 80(2x) D c A 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 2.40 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 L HE 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 Anachip Corp. www.anachip.com.tw 10/17 Rev.1.0 May.7, 2004 AP431/AP431A 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 11/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator (3) SOT23-5L Package Outline Dimension D e1 θ1(4x) 5 4 0.10 C 5x Seating Plane A1 θ 2(4x) E1 E A A2 1 e 2 3 b With Plating b1 C C1 Gauge Plane 0.25 mm θ Base Metal b L L1 Symbol A A1 A2 b b1 c c1 D E E1 L L1 e e1 θ θ1 θ2 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 6o 5o 5o 8o 10o 7o 10o Max. 1.35 0.15 1.20 0.55 0.45 0.20 0.15 3.00 3.00 1.70 0.55 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. 0o 3o 6o 5o 5o 8o 10o 7o 10o Max. 0.053 0.006 0.047 0.022 0.018 0.008 0.006 0.118 0.118 0.067 0.022 Anachip Corp. www.anachip.com.tw 12/17 Rev.1.0 May.7, 2004 AP431/AP431A 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 13/17 Rev.1.0 May.7, 2004 HE E AP431/AP431A 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 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 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 14/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator Taping Information (1)TO92 TAPING M ∆h A Ho T Do Po F2 F1 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 Min. 0.488 0.079 0.610 0.000 0.094 0.094 40mm 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 205mm E 330mm 90 ±1mm 30 ±1mm 53 ±2mm 45mm 76 ±1mm 360 ±2mm Anachip Corp. www.anachip.com.tw 15/17 Rev.1.0 May.7, 2004 AP431/AP431A Adjustable Precision Shunt Regulator (2)TO92 TAPING H2 H2 H2A H2A A H3 H4 L1 H1 D2 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 16/17 Rev.1.0 May.7, 2004 AP431/AP431A 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 17/17 40 Rev.1.0 May.7, 2004