ISSUED DATE :2003/05/15 REVISED DATE :2004/11/10B G431 Adjustable Shunt Regulator Description The G431 series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.495v) and 36v with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others. Package Dimensions Millimeter Min. Max. 2.70 3.10 2.40 2.80 1.40 1.60 0.35 0.50 0 0.10 0.45 0.55 REF. A B C D E F REF. G H K J L M Millimeter Min. Max. 1.90 REF. 1.00 1.30 0.10 0.20 0.40 0.85 1.15 10 0 Absolute Maximum Ratings at Ta = 25 Parameter Symbol Ratings Unit Junction Temperature Tj +150 Storage Temperature Tstg -65 ~ +150 Cathode VKA 37 V Cathode Current Range(Continuous) Voltage IKA -100~+150 mA Reference Input Current Range IREF -0.05~+10 mA Total Power Dissipation PD 225 mW Characteristics at Ta = 25 Parameter Cathode Voltage Cathode Current Reference Input Voltage Symbol Min Typ. Max. Unit VKA VREF - 36 V mA IKA G431C G431B VREF G431A Deviation of reference Input Voltage Over temperature(note) Ratio of Change in Reference Input VREF/ T 1 - 100 2.445 2.495 2.545 2.470 2.495 2.520 2.483 2.495 2.507 - 4.5 17 V mV - -1.0 -2.7 - -0.5 -2.0 IREF - 1.5 4 uA IREF/ T - 0.4 1.2 uA Minimum Cathode Current for Regulation IKA(min) - 0.45 1.0 mA Off-State Cathode Current IKA(off) - 0.05 1.0 uA ZkA - 0.15 0.5 Voltage to the Change in Cathode Voltage Reference Input Current Deviation of reference Input Current Over Full Temperature Range Dynamic Impedance VREF/ VKA Test Conditions VKA= VREF,IK=10mA VKA=VREF,IK=10mA Tmin Ta Tmax mV/V IK=10mA VKA=10V~VREF VKA=36V~10V IK=10mA,R1=10K ,R2= IK=10mA,R1=10K ,R2= TA=Full Temperature VKA=VREF VKA=36V,VREF=0 VKA=VREF,IK=1 to 100mA,F 1.0KHz Note: Tmin= 0 ,Tmax=+70 1/3 ISSUED DATE :2003/05/15 REVISED DATE :2004/11/10B Functional Block Diagram & Symbol Test Circuits Characteristics Curve 2/3 ISSUED DATE :2003/05/15 REVISED DATE :2004/11/10B Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory: Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C. TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785 China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165 3/3