Encapsulate Adjustable Reference Source CJ431K-HF RoHS Device Halogen Free Features SOT-23 - The output voltage can be adjusted to 36V. - Low dynamic output impedance, its typical value is 0.2Ω - Trapping current capability is 1 to 100mA - Low output noise voltage - Fast on-state response - The effective temperature compensation in the working range of full temperature - The typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/˚C 1. Reference 2. Cathode 3. Anode 0.118(3.00) 0.110(2.80) 3 0.055(1.40) 0.047(1.20) 1 2 0.079(2.00) 0.071(1.80) Mechanical data 0.006(0.15) 0.003(0.08) 0.045(1.15) 0.035(0.90) 0.100(2.55) 0.089(2.25) - Case: SOT-23, molded plastic. - Terminals: solderable per MIL-STD-750, method 2026. 0.020(0.50) 0.012(0.30) 0.020(0.50) 0.012(0.30) Circuit Diagram Cathode (K) Dimensions in inches and (millimeter) Reference (R) Anode (A) Absolute Maximum Ratings (operating temperature range applies unless otherwise specified) Symbol Value Unit Cathode voltage VKA 37 V Cathode current range (continuous) IKA -100~+150 mA Reference input current range Iref 0.05~+10 mA Power dissipation PD 300 mW RθJA 417 °C/W TJ 150 °C Operating ambient temperature range Topr -40~+85 °C Storage temperature range Tstg -65~+150 °C Parameter Thermal resistance from junction to ambient Operating junction temperature Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 1 QW-JKA01 Comchip Technology CO., LTD. Encapsulate Adjustable Reference Source Electrical Characteristics ( Ta=25°C unless otherwise specified ) Symbol Parameter Reference input voltage (Fig.1) Deviation of reference input voltage over temperature (note) (Fig.1) Ratio of change in reference input voltage to the change in cathode voltage (Fig.2) Reference input current (Fig.2) Deviation of reference input current over full temperature range (Fig.2) Vref Typ. Max. Unit 2.520 V 4.5 V 17 mV △VKA = 10V~VREF -1.0 -2.7 mV/V △VKA = 36V~10V -0.5 -2.0 mV/V 1.5 4 µA lKA = 10mA, R1 = 10 kΩ R2 = ∞ Ta = full Temperature 0.4 1.2 µA Conditions Min. VKA = VREF, IKA = 10mA 2.470 VKA = VREF, IKA = 10mA △Vref /△T Tmin ≤ Ta ≤ Tmax △Vref /△VKA IKA = 10mA lKA = 10mA, R1 = 10 kΩ lref R2 = ∞ △lref /△T Minimum cathode current for regulation (Fig.1) IKA(min) VKA = VREF 0.45 1.0 mA Off-state cathode current (Fig.3) IKA(OFF) VKA = 40V, VREF = 0 0.05 0.5 µA 0.15 0.5 Ω Dynamic impedance VKA = VREF, lKA = 1 to 100mA ZKA f ≤ 1.0kHz Note: TMIN= 0°C, TMAX= +70°C Classification of Vref Rank 0.5% 1% Range 2.482 - 2.508 2.47 - 2.52 Fig.1 - Test Circuit for VKA = Vref Fig.2 - Test Circuit for VKA > Vref Fig.3 - Test Circuit for Ioff lnput VKA lnput VKA IK IK R1 Vref lnput VKA Ioff lref R2 Vref VKA = Vref (1+R1/R2)+ lref‧R1 Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 2 QW-JKA01 Comchip Technology CO., LTD. Encapsulate Adjustable Reference Source RATING AND CHARACTERISTIC CURVES (CJ431K-HF) Cathode Current versus Cathode Voltage Cathode Current, IK (mA) 150 100 50 0 -50 VKA=Vref Ta=25°C -100 -2 0 -1 1 3 2 Cathode Voltage, VKA (V) lnput Cathode Current Versus Cathode Voltage VKA IKA Cathode Current, IK (µA) 800 600 IKA(min) Vref 400 200 0 Test Circuit for VKA = Vref VKA=Vref Ta=25°C -200 0 -1 1 3 2 Cathode Voltage, VKA (V) Reference Input Voltage Versus Ambient Temperature Reference Input Voltage, Vref (mV) 2600 2550 2500 2450 2400 VKA=Vref IK=10mA 2350 -40 -20 0 20 40 60 80 100 Ambient Temperature, Ta (°C) Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 3 QW-JKA01 Comchip Technology CO., LTD. Encapsulate Adjustable Reference Source RATING AND CHARACTERISTIC CURVES (CJ431K-HF) Reference Input Voltage, △Vref (mV) Change In Reference Input Voltage Versus Cathode Voltage 0 IK=10mA TA=25°C VKA lnput IKA -4 R1 -8 -12 R2 lref Vref -16 -20 0 5 10 15 20 25 30 40 35 Cathode Voltage, VKA (V) Test Circuit for VKA = Vref (1+R1/R2)+ lref‧R1 Reference Input Current Versus Ambient Temperature 3.0 VKA Reference Input Current, (µA) lnput 2.5 IKA 2.0 R1 Iref 1.5 1.0 Vref 0.5 IK=10mA R1=10KΩ 0.0 -40 -20 0 20 40 60 80 100 Test Circuit for Iref Ambient Temperature, Ta (˚C) Off-State Cathode Current Versus Ambient Temperature Off-State Cathode Current, Ioff (nA) 40 lnput VKA Ioff 30 20 10 VKA=36V Vref=0V 0 -40 -20 0 20 40 60 80 100 Ambient Temperature, Ta (˚C) Test Circuit for Ioff Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 4 QW-JKA01 Comchip Technology CO., LTD. Encapsulate Adjustable Reference Source Reel Taping Specification P1 W B F E d P0 A P SOT-23 SOT-23 SYMBOL A B C d D D1 D2 (mm) 3.15 ± 0.10 2.77 ± 0.10 1.22 ± 0.10 1.50 + 0.10 178 ± 2.0 54.40 ± 1.0 13.00 ± 1.0 (inch) 0.124 ± 0.004 0.109 ± 0.004 0.048 ± 0.004 0.059 + 0.004 7.008 ± 0.079 2.142 ± 0.039 0.512 ± 0.039 SYMBOL E F P P0 P1 W W1 (mm) 1.75 ± 0.10 3.50 ± 0.10 4.00 ± 0.10 4.00 ± 0.10 2.00 ± 0.10 8.00 + 0.30 /–0.10 9.50 ± 1.00 (inch) 0.069 ± 0.004 0.138 ± 0.004 0.158 ± 0.004 0.158 ± 0.004 0.079 ± 0.004 0.315 + 0.012 /–0.004 0.374 ± 0.039 Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 5 QW-JKA01 Comchip Technology CO., LTD. Encapsulate Adjustable Reference Source Marking Code 3 Part Number Marking Code CJ431K-HF 431K 431K 1 2 Solid dot “ ” = Halogen Free Suggested PAD Layout B SOT-23 SIZE (mm) (inch) A 0.80 0.031 B 0.60 0.024 C 1.90 0.075 D 2.02 0.080 A D C Note: 1.General tolerance: ±0.05mm. 2.The pad layout is for reference purposes only. Standard Packaging REEL PACK Case Type SOT-23 REEL Reel Size ( pcs ) (inch) 3,000 7 Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 6 QW-JKA01 Comchip Technology CO., LTD.