WT431LA

WT431LT1 PROGRAMMABLE PRECISION REFERENCE P b Lead(Pb)-Free Features: * Programmagle 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. 1 2 3 SOT-23 Description: * The WT431 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 2.5) and 36V with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others. SOT-23 Outline Dimensions A Unit:mm TOP VIEW B C E G H D K J L M Dim A B C D E G H J K L M Min 0.35 1.19 2.10 0.85 0.46 1.70 2.70 0.01 0.89 0.30 0.076 Max 0.51 1.40 3.00 1.05 1.00 2.10 3.10 0.13 1.10 0.61 0.25 WEITRON http://www.weitron.com.tw 1/5 03-Nov-06 WT431LT1 BLOCK DIAGRAM CATHODE REF + VREF ANODE PIN ASSIGNMENT WT431R 3 WT431L 3 1 2 1 2 PIN1 = REF PIN2 = Cathode PIN3 = Anode PIN1 = Cathode PIN2 = REF PIN3 = Anode Ordering information Ordering Number WT431RA WT431RB WT431LA WT431LB Rank 0.5% 1% 0.5% 1% Shipping 3000 Units / Tape & Reel 3000 Units / Tape & Reel 3000 Units / Tape & Reel 3000 Units / Tape & Reel WEITRON http://www.weitron.com.tw 2/5 03-Nov-06 WT431LT1 ABSOLUTE MAXIMUM RATINGS(Operating temperature range applies unless otherwise specified) PARAMETER Cathode Voltage Cathode Current Range(Continuous) Reference Input Current Range Operating Junction Temperature Operating Ambient Temperature Storage Temperature SYMBOL VKA VALUE 36 -100 ~ +150 -0.05 ~ +10 150 0~70 -65 ~ +150 UNIT V IKA Iref Tj Topr Tstg mA mA °C °C °C 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 SYMBOL Vref ΔVref /ΔT TEST CONDITIONS VKA=VREF, IKA=10mA VKA=VREF, IKA=10mA TMIN