AP432/AP432A AP432/432A AP432 AP432A AP02001 SC-59 /SOT25/SC59 AP432SA AP432ASA

ADJUSTABLE PRECISION SHUNT REGULATOR General Description Features · · · · · · ·

AP432/AP432A AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR General Description Features · · · · · · · · · · · The AP432/432A 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. Precision reference voltage AP432 AP432 : 1.24V ± 1% AP432A AP432A : 1.24V ± 0.5% Sink current capability: 200mA Minimum cathode current for regulation: 150A o Equivalent full-range temp coefficient: 30 ppm/ C Fast turn-on response Low dynamic output impedance: 0.2 Programmable output voltage to 20V Low output noise Packages: SOT23, SOT23R, SOT25, SOT89-3L, 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 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 Tolerance: Blank : +/- 1% A : +/- 0.5% Note: SA SOT23 AP432 AP432(A)SR SR SOT23R AP432 AP432(A)Q Q SOT25 AP432 AP432(A)W W SC59 AP432 AP432(A)R R SC59 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel -B : Bulk -7/-13 : Taping -A : Ammo Box (Note 3) -7 NA NA NA NA -7 NA NA NA NA -7 NA NA NA NA -7 NA NA NA NA NA NA NA NA -13 NA NA -13 NA NA NA 2000/Box -A -7 SOP-8L AP432 AP432(A) Lead-free L : Lead Free G : Green (Note 1) 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 AP432(A)SA Lead-free Packing Lead-Free SOP-8L SOT89-3L TO92-3L SOT23 SC59 SC59 SOT25 SOT23R 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 Blank : Y : V : SA : : W : R Q : SR : NA NA AP432 AP432(A)Y Y SOT89-3L NA NA AP432 AP432(A)V V TO92-3L NA NA Notes: 2500/Tape & Reel 2500/Tape & Reel NA 3. Ammo Box is for TO92-3 Spread Lead. 4. Suffix "A" denotes AP432A AP432A device. 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001 AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP432/AP432A AP432/AP432A Rev. 7 1 of 13 www.diodes.com MAY 2007 © Diodes Incorporated AP432/AP432A AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Pin Assignment Pin Configuration Package NC 1 NC Package 3 SOT 25 5 ANODE SOP -8L 4 REF SC -59 (Package Code -W) Pin Configuration 1 8 REF ANODE 2 7 ANODE ANODE 3 6 ANODE 4 5 NC NC 3 REF 3 REF ANODE (Top View ) CATHODE 2 CATHODE (Top View ) SOT 23 1 ANODE 1 2 CATHODE 2 CATHODE 3 ANODE 2 REF + AP432/AP432A AP432/AP432A Rev. 7 ANODE REF 1 3 Cathode 3 Cathode 2 Anode + TO92-3L SOT23R 1 CATHODE 2 3 CATHODE + SC-59 SC-59 (Package Code -R) 1 REF SOT89-3L 2 Anode 1 REF 2 of 13 www.diodes.com MAY 2007 © Diodes Incorporated AP432/AP432A 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 AP432/AP432A Rev. 7 3 of 13 www.diodes.com MAY 2007 © Diodes Incorporated AP432/AP432A 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 SOT89-3L TO92-3L Rating +20 -10 to +250 10 -20 to +85 -65 to +150 250 250 400 600 800 780 Unit V mA mA o C o C mW mW mW mW mW mW Note: 6. TJ, max =150°C 7. Ratings apply to ambient temperature at 25°C. AP432/AP432A AP432/AP432A Rev. 7 4 of 13 www.diodes.com MAY 2007 © Diodes Incorporated AP432/AP432A 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 AP432 VKA = Vref, I KA = 10mA (Fig.1) AP432A 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 A IREF 0.4 1.2 A IKA(min) IKA(off) 0.15 0.1 0.3 1.0 mA A Z KA 0.2 0.5 VREF Min. 1.227 1.233 VREF VREF V Typ. V KA R1 = 10K,R2 = IKA= 10mA (Fig.2) R1 = 10K,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 VREF is defined as: VDEV ) 10 6 VREF (25°C) . ( ppm ) = °C T2 - T1 ( VREF Where: T2 T1 = full temperature change. VREF 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 AP432/AP432A Rev. 7 (1 + R1 ) R2 5 of 13 www.diodes.com MAY 2007 © Diodes Incorporated AP432/AP432A 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 AP432/AP432A Rev. 7 Fig 2. Test Circuit for VKA > VREF 6 of 13 www.diodes.com Fig 3. Test Circuit for Off-State Current MAY 2007 © Diodes Incorporated AP432/AP432A AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Typical Performance Characteristics Small-Signal Voltage Amplification vs Frequency IKA=10mA TA=25oC 50 Output IKA 15K 40 + 9F 232 + - AV-Small Signal Voltage Amplification (dB) 60 30 - 8.25K GND 20 Test Circuit for Voltage Amplification 10 0 10K 1K 100K f-Frequency-Hz 1M 10M Reference Impedance vs Frequency ZKA Reference Impedance () 100 I KA=10mA o TA =25 C 1K Output I KA 10 50 + GND 1 Test Circuit for Reference Impedance 0.1 1K 10K 100K 1M 10M f-Frequency-Hz 150 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 0.001 150 R1=10K 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 AP432/AP432A Rev. 7 VBATT Stable 70 60 + 7 of 13 www.diodes.com + - VBATT Test Circuit for Curve B, C, and D MAY 2007 © Diodes Incorporated AP432/AP432A AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Application Examples VIN VIN RCL R VIN R1B R1A ON R2A R2B I OUT + OFF LED on when Low Limit