ET431

Description The ET431 is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5 volts) and 36 volts with two external resistors. The devices have a typical dynamic output impedance of 0.2 . Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. The ET431 is characterized for operation from -0 ℃to +70℃ Features  Programmable Output Voltage to 36V  Low Dynamic Output Impedance 0.2  Sink Current Capability of 0.1 mA to 100 mA  Equivalent Full-Range Temperature Coefficient of Operating Temperature Range  Low Output Noise  Fast Turn on 50 ppm/oC  Temperature Compensated for Operation over Full Rated R AK R K A ET431 ET431 TO – 2 9 SOT – 3 2 Package FUNCTIONAL BLOCK DIAGRAM SYM BOL Cathode Reference Cathode Reference Anode Anode BEIJING ESTEK ELECTRONICS CO.,LTD 1 Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) Characteristic Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation at 25 C: TO –92 Package SOT –23 –3 Package o C/W) Junction Temperature Range Operating Temperature Range Storage Temperature Range o Symbol VKA IK IREF PD Value 36 -100 ~ 150 0.05 ~ 10 0.7 0.2 Unit V mA mA W W o o TJ Tg Tstg 0 ~ 150 0 ~ 70 -65 ~ +150 C C C o Electrical Characteristics (Ta = 25oC, VKA = VREF, Characteristic Reference Input Voltage Deviation of Reference Input Voltage Over Full Temperature Range Ratio of Change in Ref er enc e Input Voltage to the Change in C athode Voltage IK = 10mA) Symbol VREF VREF(de v) Test Condition 0.5% 1.0% Min 2.483 2.470 Typ 2.495 3 Max 2.507 2.520 Unit V mV Tmin≤ Ta≤Tmax ﾣ 17 V R EF VKA IREF IREF(dev) VKA = 10V-VREF VKA = 36V- 10V R1 = 10K, R2 =∞ ﾣ R1 = 10K, R2 = ∞ﾣ -1.4 -1.0 1.8 0.4 -2.7 -2.0 4 1.2 mV/V A A Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance  IK(min) 0.25 0.5 mA A ohm IK(off) ZKA IK = 1 VKA = 36V, VREF = 0 mA to 100 mA , f , ﾣ 1.0KHz 0.26 0.22 1.0 0.5 BEIJING ESTEK ELECTRONICS CO.,LTD 2 TEST CIRCUITS Ordering Information OR DERI NG NU M B ER 431 P A C K AG E TO-92 / SOT-23 M AR KI NG ET431 / 431 Address : Postalcode:100039 Tel: 86-010-58895780 / 81 / 82 / 83 / 84 Http://www.estek.com.cn Email:sales@estek.com.cn 6A06--6A07 Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing Fax : 010-58895793 REV No:01-060807 BEIJING ESTEK ELECTRONICS CO.,LTD 3