ZTL431BFTA Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN USE AS431 ZTL431/ZTL432 COST EFFECTIVE ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The ZTL431 and ZTL432 are three terminal adjustable shunt (Top View) regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to CCaatthodhodee 33 any chosen voltage between 2.5 and 20 volts by selection of two 11 AAnodnodee external divider resistors. 22 RRefef The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. SOT23, SOT23F (ZTL431) The ZTL432 has the same electrical specifications as the ZTL431 but (Top View) has a different pin out in SOT23 (F-suffix) and SOT23F (FF-suffix). Ref 3 Both variants are available in two grades with initial tolerances of 1% 1 Anode and 0.5% for the A and B grades, respectively. Cathode 2 These are functionally equivalent to the TL431/TL432 except for maximum operation voltage, and have an ambient temperature range SOT23, SOT23F of -40C to +125C as standard. (ZTL432) (Top View) Features Cathode 1 6 Anode Temperature Range ................ -40C to +125C Reference Voltage Tolerance at +25C N/C 2 N/C 5 0.5%.......................................B grade 1% .........................................A grade Ref 3 4 NC 0.2 Typical Output Impedance SOT363 Sink Current Capability.. 1mA to 100mA Connected internally to substrate Adjustable Output VoltageV to 20V should be left floating or connected to Anode REF Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) (Top View) Halogen and Antimony Free. Green Device (Note 3) An Automotive-Compliant Part is Available Under Separate 1 5 N/C CCaatthodhodee Datasheet (ZTL431AQ, ZTL431BQ, ZTL432AQ, ZTL432BQ) Anode 2 Ref 4 N/C Applications 3 Opto-Coupler Linearization SOT25 (SE5 Package) Linear Regulators (Top View) Improved Zener Variable Reference Anode N/C 1 5 N/C* 2 Cathode 3 4 Ref SOT25 (E5 Package) *must be left floating or connected to pin 5 Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See ZTL431/ZTL432 Absolute Maximum Ratings (Voltages specified are relative to the Anode pin unless otherwise stated.) Parameter Rating Unit Cathode Voltage (V ) 20 V KA Continuous Cathode Current (I ) 150 mA KA Reference Input Current Range (I ) -50A to +10mA REF Operating Junction Temperature -40 to +150 C Storage Temperature -55 to +150 C Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extended periods, may reduce device reliability. Package Thermal Data P DIS Package JA T = +25C, T = +150C A J SOT23 380C/W 330mW SOT23F 138C/W 900mW SOT25 250C/W 500mW SOT363 380C/W 330mW Recommended Operating Conditions ( T = +25C, unless otherwise specified.) A Symbol Parameter Min Max Unit V Cathode Voltage V 20 V KA REF I Cathode Current 1 100 mA KA T Operating Ambient Temperature Range -40 +125 C A Electrical Characteristics ( T = +25C, unless otherwise specified.) A Symbol Parameter Conditions Min Typ Max Unit ZTL43 A 2.475 2.5 2.525 V = V KA REF V Reference Voltage V REF I = 10mA ZTL43 B 2.487 2.5 2.513 KA T = 0 to +70C 6 16 A Deviation of Reference Voltage Over Full V = V KA REF V T = -40 to +85C 14 34 mV DEV A Temperature Range I = 10mA KA T = -40 to +125C 14 34 A -1.4 -2.7 V VKA = VREF to 10V REF Ratio of Change In Reference Voltage I = 10mA mV/V KA To the Change In Cathode Voltage V -1.0 -2.0 KA V = 10V to 20V KA I = 10mA, R1 = 10k, KA I Reference Input Current 2 4 A REF R = O/C (Open Circuit) 2 I = 10mA T = 0 to +70C 0.8 1.2 KA A R = 10k 1 T = -40 to +85C 0.8 2.5 A A I I Deviation Over Full Temperature Range REF REF R = O/C (Open 2 T = -40 to +125C 0.8 2.5 A Circuit) I Minimum Cathode Current for Regulation V = V 0.4 0.6 mA KA(MIN) KA REF V = 20V, V = KA REF I Off State Current 0.1 0.5 A KA(OFF) 0V Dynamic Output Impedance 0.2 0.5 R V = V , f = 0Hz Z KA REF 2 of 13 January 2021 ZTL431/ZTL432 Diodes Incorporated www.diodes.com Document number: DS33263 Rev. 19 - 3