AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Features Description • The AP432 and AP432A are 3-terminal adjustable precision Precision reference voltage • AP432 : 1.24V ± 1% • • • • • • • • • • • shunt regulators with guaranteed stable temperature over AP432A : 1.24V ± 0.5% the applicable extended commercial temperature range. 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 Lead Free packages: SOT25, SC59, SC59R, SOT89-3L and TO92-3L SOT23, SOT23R, SOT25, SC59, SC59R, SOP-8L, SOT89-3L and TO92-3L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) Notes: 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/AP432A 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. 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 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 AP432/AP432A Document number: DS31003 Rev. 16 - 2 1 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Pin Assignments (1) SOT25 (2) SOP-8L (Top View) (Top View) NC 5 1 NC ANODE CATHODE 1 8 REF ANODE 2 7 ANODE ANODE 3 6 ANODE NC 4 5 NC 2 CATHODE 4 3 REF (3) SC59 (4) SC59R (Top View) (Top View) 3 REF ANODE ANODE 1 CATHODE 2 REF 1 2 CATHODE (5) SOT23 3 (6) SOT23R (Top View) 3 ANODE (Top View) REF ANODE 1 CATHODE 2 REF 1 2 CATHODE (7) SOT89-3L 3 (8) TO92-3L (Top View) (Top View) 2 Anode + 3 + 2 + 1 3 Cathode 1 REF REF Anode Cathode AP432/AP432A Document number: DS31003 Rev. 16 - 2 2 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Functional Block Diagram REF (R) + Cathode (C) VREF Anode (A) Symbol Cathode (C) REF (R) Anode (A) Absolute Maximum Ratings Symbol Vcv ICC IREF TOP TST PD Notes: Parameter Cathode Voltage Continuous Cathode Current Reference Input Current Operating Temperature Storage Temperature Power Dissipation (Notes 2, 3) SOT23(R) SOT25 SC59(R) SOP-8L SOT89-3L TO92-3L Rating +20 -10 to +250 10 -20 to +85 -65 to +150 400 550 400 600 800 780 Unit V mA mA o C o C mW mW mW mW mW mW 2. TJ, max =150°C. 3. Ratings apply to ambient temperature at 25°C. AP432/AP432A Document number: DS31003 Rev. 16 - 2 3 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Electrical Characteristics (TA = 25oC, V+ = +5.0V, unless otherwise stated) Symbol VREF Parameter Test Conditions AP432 VKA = VREF, I KA = 10mA (Fig.1) AP432A Reference voltage IKA(OFF) Deviation of Reference input voltage over temperature (Note 4) Ratio of the change in Reference voltage to the change in Cathode voltage Reference input current Deviation of Reference input current over temperature Minimum Cathode current for regulation Off-state current |ZKA| Dynamic output impedance (Note 5) VREF ΔVREF ΔVKA IREF αIREF IKA(MIN) Min 1.227 1.233 Typ. Max 1.252 1.246 Unit VKA = VREF, IKA = 10mA, Ta = Full range (Fig.1) ⎯ 3.0 20 mV IKA = 10mA (Fig. 2) ⎯ -1.4 -2.0 mV/V ⎯ 1.4 3.5 μA ⎯ 0.4 1.2 μA VKA = VREF (Fig.1) ⎯ 0.15 0.3 mA VKA = 36V, VREF = 0V (Fig. 3) V KA = VREF V KA = VREF ΔIKA = 0.1mA ~ 15mA Frequency ≤ 1KHz (Fig.1) ⎯ 0.1 1.0 μA ⎯ 0.2 0.5 Ω VKA = 20~ VREF R1 = 10KΩ,R2 = ∞ IKA= 10mA (Fig. 2) R1 = 10KΩ,R2 = ∞ IKA = 10mA Ta = Full range (Fig. 2) 1.24 V VMAX VDEV = VMAX - VMIN VMIN TI Notes: T2 Temperature 4. 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) = T2 − T1 ( α VREF ……………………..……………….. ( ppm °C Where: T2 – T1 = full temperature change. αVREF can be positive or negative depending on whether the slope is positive or negative. Notes: 5. The dynamic output impedance, RZ, is defined as: Z KA = Δ V KA Δ 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 = ' AP432/AP432A Document number: DS31003 Rev. 16 - 2 Δv ≈ Z KA Δi (1 + 4 of 14 www.diodes.com R1 ) R2 June 2010 © Diodes Incorporated ) AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Test Circuits Input IN VKA IN IKA IKA VKA R1 VREF R2 VKA IREF VREF IZ(OFF) Note:VKA=VREF(1+R1/R2)+IREFxR1 Fig 1. Test Circuit for VKA= VREF Fig 2. Test Circuit for VKA > VREF Fig 3. Test Circuit for Off-State Current Typical Performance Characteristics AP432/AP432A Document number: DS31003 Rev. 16 - 2 5 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Typical Performance Characteristics (Continued) Small-Signal Voltage Amplification vs Frequency IKA=10mA TA=25oC 50 Output 15KΩ 40 + 9μF IKA 232Ω - AV-Small Signal Voltage Amplification (dB) 60 + 30 - 8.25KΩ GND 20 Test Circuit for Voltage Amplification 10 0 10K 1K 100K 1M 10M f-Frequency-Hz 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 TA=25oC A VKA=Vref 90 IKA-Cathode Current-mA 80 B VKA=5V C VKA=10V D VKA=15V I KA + CL B VBATT - Stable 70 60 C Stable 50 Test Circuit for Curve A A 40 30 D I KA 20 10 CL + 0 0.001 Document number: DS31003 Rev. 16 - 2 VBATT 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 IKA conditions with CL=0.VBATT and CL were then adjusted to determine the ranges of stability. AP432/AP432A 150Ω R1=10KΩ 6 of 14 www.diodes.com - Test Circuit for Curve B, C, and D June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Application Examples VIN V IN RCL R R1B R1A ON R2A R2B I OUT VIN + OFF LED on when Low Limit<VIN < High Limit (1+R1B/R2B) Low Limit ≈ V REF (1+R1A/R2A) High Limit ≈ V Delay = RC x ln ( VIN V -V IN ) IOUT = VREF / RCL REF REF Fig. 5 Delay Timer Fig. 4 Voltage Monitor VIN I OUT VIN Fig. 6 Current Limiter or Current Source VOUT VIN VOUT PULSE R1 R1 R2 R2 RS L IMIT VOUT = (1 + R1/R2) x VREF I OUT = VREF / RS Fig. 7 Constant-Current Sink Fig. 8 Higher-Current Shunt Regulator (1 + R1/R2) x VREF Fig. 9 Crow Bar VIN R1A R1B + R2A R2B Low Limit High Limit Output ON when Low Limit < VIN < High Limit V BE VREF (1 + R1B/R2B) +VBE VREF (1 + R1A/R2A) Fig.10 Over-Voltage / Under-Voltage Protection Circuit AP432/AP432A Document number: DS31003 Rev. 16 - 2 7 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Ordering Information AP432 X XX X - X Reference Voltage Tolerance Blank : +/- 1% A : +/- 0.5% Device (Note 8) AP432(A)SAG-7 AP432(A)SRG-7 AP432(A)QL-7 AP432(A)QG-7 AP432(A)WL-7 AP432(A)WG-7 AP432(A)RL-7 AP432(A)RG-7 AP432(A)G-13 AP432(A)YL-13 AP432(A)YG-13 AP432(A)VL-A AP432(A)VG-A Notes: Lead Free Package SA : SOT23 SR : SOT23R Q : SOT25 W : SC59 R : SC59R Blank : SOP-8L Y : SOT89-3L V : TO92-3L Package Code Packaging (Note 9) SA SR Q Q W W R R SOT23 SOT23R SOT25 SOT25 SC59 SC59 SC59R SC59R SOP-8L SOT89-3L SOT89-3L TO92-3L TO92-3L Y Y V V L : Lead Free G : Green (Note 6) Packing 7/13 : Tape & Reel A : Ammo Box (Note 7) 7”/13 Tape and Reel Part Number Quantity Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 2500/Tape & Reel -13 2500/Tape & Reel -13 2500/Tape & Reel -13 NA NA NA NA Ammo Box Part Number Quantity Suffix NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 2000/Box NA 2000/Box NA 6. SOP-8L, SOT23 and SOT23R are available in “Green” products only. 7. Ammo Box is for TO92-3L Spread Lead. 8. Suffix “A” denotes AP432A device. 9. 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 Document number: DS31003 Rev. 16 - 2 8 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Marking Information (1) SC59 and SC59R ( Top View ) 3 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green a~z : Lead Free XX Y W X 1 2 (2) SOT23 and SOT23R ( Top View ) 3 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green XX Y W X 1 2 (3) SOT25 ( Top View ) 4 7 5 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green a~z : Lead Free XX Y W X 1 2 3 (4) SOP-8L ( Top View ) 8 Logo Part Number Accuracy Blank : 2.495 + 1% A : 2.495 + 0.5% AP432/AP432A Document number: DS31003 Rev. 16 - 2 5 AP432X YY WW X X 1 G : Green YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code 4 9 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Marking Information (Continued) (5) SOT89-3L ( Top View ) XX Y W X 1 2 3 XX : Identification code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code A~Z : Green a~z : Lead Free (6) TO92-3L ( Top View ) Accuracy Blank: 2.495 + 1% A: 2.495 + 0.5% AP432 X Y WW X X G : Green L : Lead Free Y : Year : 0~9 WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code Identification Code Table Device AP432SA AP432ASA AP432SR AP432ASR AP432Q AP432AQ AP432W AP432AW AP432R AP432AR AP432Y AP432AY Notes: Package (Note 10) Identification Code Date Code SOT23 SOT23 SOT23R SOT23R SOT25 SOT25 SC59 SC59 SC59R SC59R SOT89 SOT89 D3 D4 D7 D8 B7 B8 B3 B4 B5 B6 B1 B2 YM YM YM YM YM YM YM YM YM YM YM YM 10. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf. AP432/AP432A Document number: DS31003 Rev. 16 - 2 10 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Package Outline Dimensions (All Dimensions in mm) (1) Package type: SOT25 (2) Package Type: SC59 and SC59R TOP VIEW 1.50/ 1.70 0.35/0.50 2.70/ 3.00 1.90 2.90/3.10 1.00/ 1.30 0.10/0.20 0.013/0.10 0.95 0.35/0.55 0 O /8 O AP432/AP432A Document number: DS31003 Rev. 16 - 2 11 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Package Outline Dimensions (Continued) (3) Package Types: SOT23 and SOT23R 0.254 0.10/0.20 5.90/6.10 3.85/3.95 (4) Package Type: SOP-8L Gauge Plane Seating Plane 0.62/0.82 Detail "A" 7°~9° 0.15/0.25 1.30/1.50 1.75max. 0.35max. 45° 7°~9° Detail "A" 0°/8° 0.3/0.5 1.27typ 4.85/4.95 5.4 8x-0.60 8x-1.55 6x-1.27 Land Pattern Recommendation (Unit: mm) AP432/AP432A Document number: DS31003 Rev. 16 - 2 12 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Package Outline Dimensions (Continued) (5) Package Type: SOT89-3L 1.40/1.75 Typ 1.60 2.7 3.94/4.25 1.45/1.55 Typ 1.50 1.3 1.9 0.4 0.80/ 1.20 2.35/2.60 Typ 2.48 1.7 1.5 0.9 Land Pattern Recommendation (Unit: mm) 2.90/3.10 Typ 3.00 50 (2x) 80 (2x) 1.40/1.60 Typ 1.50 4.40/4.60 Typ 4.50 0.36/0.48 0.41/0.53 0.36/0.48 Typ 0.42 Typ 0.47 Typ 0.42 0.35/0.43 Typ 0.39 (6) Package Type: TO92-3L for Ammo pack AP432/AP432A Document number: DS31003 Rev. 16 - 2 13 of 14 www.diodes.com June 2010 © Diodes Incorporated AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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