TL431A

UTC TL431A LINEAR INTEGRATED CIRCUIT 1 PROGRAMMABLE PRECISION REFERENCE DESCRIPTION The UTC TL431A is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref(approximately 2.5V) and 36V with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others. 1 SOT-89 TO-92 2 1 3 FEATURES *Programmable output Voltage to 36V. *Low dynamic output impedance 0.2Ω. *Sink current capability of 1 to 100mA. *Equivalent full-range temperature coefficient of 50ppm/ °C typical for operation over full rated operating temperature range. SOT-23 SOP-8 SOP-8 1: Cathode 2,3,6,7: Anode 8: Ref. 4,5: N.C. TO-92 1: Ref ; 2: Anode; 3: Cathode SOT-89 1: Ref ; 2: Anode; 3: Cathode SOT-23 1: Cathode; 2: Ref; 3: Anode *Pb-free plating product number: TL431AK BLOCK DIAGRAM CATHODE REFERENCE REFERENCE (R) ANODE(A) CATHODE (K) 2.5V Vref ANODE UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R103-007,D UTC TL431A PARAMETER LINEAR INTEGRATED CIRCUIT SYMBOL VKA IKA Iref Tj Topr Tstg ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)) VALUE 37 -100 ~ +150 -0.05 ~ +10 150 -40 ~ +85 -65 ~ +150 UNIT V mA mA °C °C °C Cathode Voltage Cathode Current Range(Continuous) Reference Input Current Range Operating Junction Temperature Operating Ambient Temperature Storage Temperature Temperature RECOMMENDED OPERATING CONDITIONS PARAMETER Cathode Voltage Cathode Current SYMBOL VKA IKA MIN VREF 1 TYP MAX 36 100 UNIT V mA ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) PARAMETER Reference Input Voltage Deviation of reference Input Voltage Over temperature(note 1) Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance Note:TMIN=0°C,TMAX=+70°C SYMBOL Vref ∆Vref/∆T TEST CONDITIONS VKA=VREF,IKA=10mA VKA=VREF,IKA=10mA TMIN