A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q AUTOMOTIVE GRADE ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The ZTL431Q and ZTL432Q are three terminal adjustable shunt ZTL431_QF SOT23, ZTL431_FF SOT23F (Top View) regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to Cathode 3 any chosen voltage between 2.5 and 20 volts by selection of two external divider resistors. 1 Anode The ZTL432Q has the same electrical specifications as the ZTL431Q Ref 2 but has a different pin out in SOT23 (F-suffix). Both variants are available in 2 grades with initial tolerances of 1% ZTL432_QF SOT23, ZTL432_FF SOT23F (Top View) and 0.5% for the A and B grades respectively. Ref 3 These are functionally equivalent to the TL431/TL432 except for maximum operation voltage, and have an ambient temperature range 1 Anode of -40°C to +125°C as standard. Cathode 2 The ZTL431Q and ZTL432Q have been qualified to AEC-Q100 Grade 1 and are Automotive Grade supporting PPAPs ZTL431_QE5 SOT25 (Top View) Features N/C Temperature Range ................ -40°C to +125°C N/C* 2 Reference Voltage Tolerance at +25°C 0.5%.......................................B grade 1% .........................................A grade Cathode 3 0.2Ω typical output impedance Sink Current Capability…….. 1mA to 100mA Adjustable Output Voltage……VREF to 20V Green Molding in SOT23 and SOT25 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Automotive Grade Qualified to AEC-Q100 Grade 1 Supports PPAP documents 5 Anode 4 Ref *must be left floating or 1 connected to pin 5 Typical Application Applications Opto-Coupler Linearization Linear Regulators Improved Zener Variable Reference Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 1 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Absolute Maximum Ratings (Voltages specified are relative to the ANODE pin unless otherwise stated.) Parameter Rating Unit Cathode Voltage (VKA) 20 V Continuous Cathode Current (IKA) 150 mA Reference Input Current Range (IREF) Operating Junction Temperature Storage Temperature ESD Susceptibility HBM Human Body Model MM Machine Model CDM Charged Device Model Caution: -50µA to +10mA — -40 to +150 -55 to +150 °C °C 4 400 1 kV V kV Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. (Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices.) Package Thermal Data Package JA PDIS TA = +25°C, TJ = +150°C SOT23 SOT25 380°C/W 250°C/W 330mW 500mW Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Unit VKA Cathode Voltage VREF 20 V IKA Cathode Current 1 100 mA TA Operating Ambient Temperature Range -40 +125 °C Electrical Characteristics Symbol (@TA = +25°C, unless otherwise specified.) Parameter Conditions ZTL43_QA Min 2.475 Typ 2.5 Max 2.525 ZTL43_QB 2.487 2.5 2.513 VREF Reference Voltage VKA = VREF IKA = 10mA VDEV Deviation of Reference Voltage Over Full Temperature Range VKA = VREF IKA = 10 mA VREF VKA Ratio of Change In Reference Voltage To the Change In Cathode Voltage IKA = 10mA Reference Input Current IKA = 10mA, R1 = 10kΩ, R2 = OC IREF IREF IREF Deviation Over Full Temperature Range IKA = 10mA R1 = 10kΩ R2 = OC TA = 0 to +70° — 6 16 TA = -40 to +85°C — 14 34 TA = -40 to +125°C — 14 34 VKA = VREF to 10 — -1.4 -2.7 VKA = 10V to 20V — -1.0 -2.0 — 2 4 TA = 0 to +70°C — 0.8 1.2 TA = -40 to +85°C — 0.8 2.5 TA = -40 to +125°C — 0.8 2.5 Units V mV mV/V µA µA IKA(MIN) Minimum Cathode Current for Regulation VKA = VREF — — 0.4 0.6 mA IKA(OFF) Off State Current VKA = 20V, VREF = 0V — — 0.1 0.5 µA Dynamic Output Impedance VKA = VREF, f = 0Hz — — 0.2 0.5 Ω RZ ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 2 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Typical Characteristics VREF = VKA IKA = 10mA Dynamic Impedance vs. Frequency Reference Voltage vs. Temperature ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 3 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Typical Characteristics (cont.) VKA IKA 60 Gain (dB) 50 40 30 20 10 0 100 1000 10000 100000 1000000 IKA Frequency (Hz) Test Circuit for Open Loop Voltage Gain Gain vs. Frequency VKA VKA Pulse Response Test Circuit for Pulse Response VKA 100 Cathode Current (mA) 90 IKA 80 70 60 50 Stable Stable ab e 40 30 20 10 0 10.0E-12 100.0E-12 1.0E-9 10.0E-9 100.0E-9 1.0E-6 Load Capacitance (F) Stability Boundary Condition ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 VREF < VKA < 20, IKA = 10mA, TA = 25°C Test Circuit for Stabilty Boundary Conditions 4 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Application Circuits V+ V+ VOUT VOUT R1 R1 VREF VREF R2 R2 VREF VOUT VREF VOUT Higher current shunt regulator Shunt regulator V+ ZSR*** V+ In VOUT Out 30Ω Common R1 0.01µF VREF R1 R2 VREF VOUT R2 VOUT(MIN) = VREF + VREG VREF VOUT VOUT Output control of a three terminal fixed regulator VREF Series regulator V+ V+ R1 Output VREF VON~ 2V VOFF = V+ R2a R1 VREF Output Input VTH = 2.5V R2b VREF VREF Single supply comparator with temperature compensated threshold ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 Over voltage / under voltage protection circuit 5 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q DC Test Circuits Notes Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference input voltage over the full temperature range. The average temperature coefficient of the reference input voltage, VREF is defined as: VREF(ppm/°C) = VDEV 1,000,000 VREF(T1-T2) The dynamic output impedance, RZ, is defined as: RZ = ∆VZ ∆IZ When the device is programmed with two external resistors, R1 and R2, (figure 2), the dynamic output impedance of the overall circuit, R'Z, is defined as: R'Z = RZ (1 + R1 ) R2 Stability Boundary The ZTL431Q and ZTL432Q are stable with a range of capacitive loads. A zone of instability exists as demonstrated in the typical characteristic graph on page 4. The graph shows typical conditions. To ensure reliable stability a capacitor of 4.7nF or greater is recommended between anode and cathode. ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 6 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Ordering Information Tol. 1% 0.5% Note: 4. Ordering Code Pack Part Mark Status* Reel Size Tape Width (mm) Quantity per Reel ZTL431AQE5TA ZTL431AQFTA ZTL432AQFTA ZTL431BQE5TA ZTL431BQFTA ZTL432BQFTA SOT25 SOT23 SOT23 SOT25 SOT23 SOT23 31A 31A 32A 31B 31B 32B Active Active Active Active Active Active 7”, 180mm 7”, 180mm 7”, 180mm 7”, 180mm 7”, 180mm 7”, 180mm 8 8 8 8 8 8 3000 3000 3000 3000 3000 3000 Automotive Grade products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/. Package Outline Dimensions Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. SOT23 A B C H K J M K1 F D G ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 L 7 of 9 www.diodes.com SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.903 1.10 1.00 K1 0.400 L 0.45 0.61 0.55 M 0.085 0.18 0.11 0° 8° All Dimensions in mm February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q Package Outline Dimensions (cont.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. SOT25 A SOT25 Dim Min Max Typ A 0.35 0.50 0.38 B 1.50 1.70 1.60 C 2.70 3.00 2.80 D 0.95 H 2.90 3.10 3.00 J 0.013 0.10 0.05 K 1.00 1.30 1.10 L 0.35 0.55 0.40 M 0.10 0.20 0.15 N 0.70 0.80 0.75 0° 8° All Dimensions in mm B C H K M N J L D Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. SOT23 Dimensions Value (in mm) Z 2.9 X 0.8 Y 0.9 2.0 C 1.35 E Y Z C E X SOT25 C2 Z C2 Dimensions Value (in mm) Z 3.20 G 1.60 X 0.55 Y 0.80 2.40 C1 0.95 C2 C1 G Y X ZTL431Q/ZTL432Q Document number: DS36916 Rev. 1 - 2 8 of 9 www.diodes.com February 2014 © Diodes Incorporated A Product Line of Diodes Incorporated ZTL431Q/ZTL432Q 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). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 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