RoHS WEJ431 WEJ431 Adjustable Accurate Reference Source D T ,. L SOT-89 FEATURES The output voltage can be adjusted to 36V 1. REFERENCE Low dynamic output impedance, its typical value is 0.2Ω Trapping current capability is 1 to 100mA 1 2. ANODE The typical value of the equivalent temperature factor in the 2 whole temperature scope is 50 ppm/ 3 3. CATHODE The effective temperature compensation in the working range of full temperature Low output noise voltage Fast on -state respons ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Parameter Cathode Voltage VKA Cathode Current Range (Continuous) IKA Reference lnput Current Range Iref Power Dissipation PD Operating temperature Topr Storage temperature Range Tstg -100~+150 R T Parameter Symbol Reference lnput Voltage Vref C E L Deviation of reference input Voltage Over temperature (note) ∆Vref/∆T Ratio Of Change in Reference lnput ∆Vref/∆VKA Voltage to the change in Cathode E Reference lnput Current J E VALUE 37 ELECTRICAL CHARACTERISTICS (Tamb=25℃ Voltage IC SYMBOL lref Deviation Of Reference lnput Current Over Full Temperature Range ∆lref/∆T O N C O UNITS V mA 0.05~+10 mA 770 mW 0~70 ℃ -65~+150 ℃ unless otherwise specified) Test conditions VKA=VREF, IKA=10mA VKA =VREF, IKA =10mA Tmin≤Ta≤Tmax ∆VKA IKA=10mA =10V~VREF ∆VKA =36V~10V IKA= 10mA,R1=10KΩ R2=∞ MIN TYP MAX UNIT 2.450 2.5 2.550 V 4.5 17 mV -1.0 -2.7 m V/V -0.5 -2.0 m V/V 1.5 4 µA 0.4 1.2 µA lKA=10mA, R1=10KΩ R2=∞ TA=full Temperature Minimum cathode current for W regulation Off-state cathode Current Dynamic lmpedance IKA(min) VKA=VREF 0.45 1.0 mA IKA(OFF) VKA=36V ,VREF=0 0.05 1.0 µA 0.15 0.5 Ω ZKA VKA=VREF, lKA=1 to 100mA f≤1.0KHz Note:TMIN=0℃ ,TMAX=+70℃ CLASSIFICATION OF Vref Rank 0.5% 1% 2% Range 2.487-2.512 2.475-2.525 2.450-2.550 WEJ ELECTRONIC CO. Http:// www.wej.cn E-mail:[email protected]