AF431xSF Semiconductor Programmable Voltage Reference Features • • • • • • Programmable output voltage to 20 volts Sink current capability of 1.0mA to 100mA Low dynamic impedance 0.15Ω typical Temperature compensated for operation over full rated operating temperature Equivalent full-range temperature coefficient of 50ppm/°C (Typical) Low output Noise voltage Ordering Information Type NO. Marking AF431xSF Package Code SOT-23F □41 □: Grade => B : ±0.5%, A : ±1.0% Outline Dimensions unit : mm Symbol 2.4±0.1 1.6±0.1 1.90 BSC Functional block diagram 0.9±0.1 0.15±0.05 2 0.4±0.05 3 0~0.1 2.9±0.1 1 PIN Connections 1. Reference 2. Cathode 3. Anode KSI-2051-002 1 AF431xSF Absolute maximum ratings (Operating ambient temperature range applies unless other specified) Parameter Symbol Ratings Unit Cathode to Anode voltage VKA 20 V Cathode current range IKA -100 ~+150 mA Reference input current range Iref -0.05~+10 mA Power dissipation PD* 300 mW Operating temperature range Topr -40~+85 °C Storage temperature range Tstg -65~+150 °C * With PCB(8×8mm copper area) at glass epoxy board (t=1.7mm, area: 20×20mm) Recommended operating conditions Parameter Symbol Ratings Min. Max. Unit Cathode to Anode voltage VKA Vref 18 V Cathode current range IKA 1.0 100 mA Electrical Characteristics (Ambient temperature at 25°C, unless otherwise noted.) Parameter Symbol Reference input voltage (Fig. 1, Note 1) Deviation of reference input voltage Over temperature(Fig. 1, Note 1,2) Ratio of change in reference input Voltage to the change in cathode Voltage(Fig. 2) Reference input current(Fig. 2) Vref ∆Vref ∆Vref ∆VKA Iref Deviation of reference input current over temperature(Fig. 2) Minimum cathode current for Regulation(Fig. 1) ∆Iref Condition VKA=Vref, AF431BSF IKA=10mA AF431ASF VKA=Vref , IKA=10mA @Ta=TLOW to THIGH IKA=10mA ∆VKA=10V-Vref ∆VKA=20V-10V IKA=10mA R1=10KΩ, R2=∞ IKA=10mA R1=10KΩ, R2=∞ Typ. Max. Unit 2.482 2.470 Min. 2.495 2.508 2.520 V - 7.0 30 mV - 1.2 0.7 2.7 2.0 mV/V - 1.8 4.0 µA - 0.4 2.5 µA IMIN VKA=Vref - 0.35 1.0 mA Off-state cathode current(Fig. 3) IOFF VKA=20V, Vref=0V - 2.7 1000 nA Dynamic impedance(Fig. 1, Note 3) ZKA VKA=Vref, f≤1.0KHz IKA=1.0mA-100mA - 0.14 0.5 Ω Fig. 1 Fig. 2 Fig. 3 <Note 1> : TLOW=-40°C, THIGH=+85°C , <Note 2> : ∆Vref= Vref Max. - Vref Min. , <Note 3> : ZKA= ∆VKA/ ∆IKA KSI-2051-002 2 AF431xSF Characteristic diagrams Fig. 4 IKA vs. VKA Fig. 6 ∆V ref vs. Ta Fig. 5 IMIN vs. VKA Fig. 7 Gv vs. frequency Fig. 8 Pulse response KSI-2051-002 3 AF431xSF These AUK products are intended for usage in general electronic equipments(Office and communication equipment, measuring equipment, domestic electrification, etc.). Please make sure that you consult with us before you use these AUK products in equipments which require high quality and/or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, traffic signal, combustion central, all types of safety device, etc.). AUK cannot accept liability to any damage which may occur in case these AUK products were used in the mentioned equipments without prior consultation with AUK. KSI-2051-002 4