B431DBZ

Bay Linear Inspire the Linear Power 2.5V Adjustable Shunt Regulator Description The Bay Linear B431 is a three terminal adjustable shunt regulator with thermal stability over Temperature range. Using two external resistors allows the output voltage to be adjusted from 2.5V to 36V. With a sharp turn on characteristics the B431 a superior replacement for zener diode applications. The B431 shunt regulator has a tolerance of 0.5% which has proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturers assembly line and contribute a significant cost savings. B431 Features • • • • Wide Operating Range …1mA to100mA Tight Band Gap Tolerance …….… 0.5% Low Temp. Coefficient………..30 ppm/oC Wide temp range of –40 to +105oC Available in TO92, SOT-89, SO-8 • Applications • • • • • Switching Power Supplies Adjustable Power Supplies Linear Regulators Battery Powered Equipment Monitors, TV, VCR Instrumentation • Package Information TO-92 (Z) 1 2 3 Ordering Information Package 0.5% TO-92 SOT-89 8SOIC Tolerance 1% 1% 2% Ref Bottom View Anode Cath B431AZ B431BZ B431DBZ B431CZ B431AR B431BR B431DBR B431CR B431AM B431BM B431DBM B431CM The Electrical Grade & Type is specified on shipping Box Only 8-Pin Surface Mount (M) 1 2 3 4 8 7 6 5 Top View Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94506 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B431 Absolute Max Ratings Parameter Cathode Voltage Continuous Cathode Current Reference Input Current Power Dissipation at TA - 25°C SOT-89 S0-8 TO-92 Thermal Resistance S0-8 TO-92 SOT-89 Operating Junction Temperature Range Operating Ambient Temperature Storage Temperature Range Symbol Vz Iz IREF PD Maximum 37 150 10 1000 750 775 175 160 110 -40 to +150 -40 to +105 -65 to +150 Units V mA mA mW OJA TJ TA TSTG °C/W °C °C °C Lead Temperature (Soldering) 10 seconds ESD Rating (Human Body Model) TLEAD TESD 300 2 °C kV Recommended Operating Conditions Min Cathode Voltage, Vz Cathode Current, Iz VREF 0.1 Max 36 100 Symbol V mA Electrical Characteristics Unless specified: T٨ = 25°C. Values in bold apply over full operating ambient temperature. B431 0.5% Parameter Reference Voltage VREF Temp Deviation Ratio of Change in VREF To Change in VZ Reference Input Current IREF Temperature Deviation Off-State Cathode Current Dynamic Output Impedance Minimum Operating Current Symbol VREF VDEV ∆ VREF ∆VZ IREF IREF(DEV) IZ (OFF) rz IZ(MIN) Condition VZ = VREF1 IZ = 10mA(1) VZ = VREF1 IZ = 10mA(1) IZ = 10mA,∆VZ = 10V to VRef IZ = 10mA,∆VZ = 36V to 10V R1 = 10kΩ, R2 = ∞, IZ = 10mA(2) R1 = 10kΩ, R2 = ∞, IZ = 10mA(2) VREF = 0V, VZ =36V(3) F