B3431 ETC | Alldatasheet

Document overview

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Technical content

Features

  • Wide Operating Range …1mA to100mA
  • Tight Band Gap Tolerance ….….…0.5%
  • Wide temp range of –40 to +105oC
  • Available in SOT-23 package

Applications

  • Switching Power Supplies
  • Adjustable Power Supplies
  • Linear Regulators
  • Battery Powered Equipment
  • Monitors, TV, VCR
  • Instrumentation 2.5V REFERENCE (R) CATHODE (K) ANODE (A) Bay LinearBay LinearBay LinearBay Linear Inspire the Linear PowerInspire the Linear PowerInspire the Linear PowerInspire the Linear Power SOT-23-3 (K3) B3431 Top View CATHODE ANODE REF SOT-23-3 (K3) LM3431 Top View ANODE REFCATHODE SOT-23-3 (K3) B3431 Top View CATHODE ANODE REF SOT-23-3 (K3) B3431 Top View CATHODE ANODE REF SOT-23-3 (K3) LM3431 Top View ANODE REFCATHODE SOT-23-3 (K3) LM3431 Top View ANODE REFCATHODE

Bay Linear, Inc 2478Armstrong St., Livermore CA USA 9550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B3431 Absolute Max Ratings Recommended Operating Conditions Min Max Symbol Cathode Voltage, Vz V REF 36 V Cathode Current, Iz 0.1 150 mA

Electrical Characteristics

Unless specified: T٨25°C. Values in bold apply over full operating ambient temperature. B3431 0.5% Parameter Symbol Condition Min Typ Max Units Reference Voltage V REF V Z = VREF1 IZ = 10mA(1) 2.490 2.50 2.515 V VREF Temp Deviation V DEV V Z = VREF1 IZ = 10mA(1) 4 17 mV IZ = 10mA,ΔVZ = 10V to VRef -2.7 -1.0 Ratio of Change in VREF To Change in VZ Δ VREF ΔVZ IZ = 10mA,ΔVZ = 36V to 10V -2.0 -0.4 0.3 mV/V Reference Input Current IREF R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.7 4 µµµµA IREF Temperature Deviation IREF(DEV) R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.4 1.2 µµµµA Off-State Cathode Current IZ (OFF) V REF = 0V, VZ =36V(3) 0.1 1 µµµµA Dynamic Output Impedance rz F <1kHz, VZ = VREF IZ = 1mA to 100mA(1) 0.20 0.50 Ω Minimum Operating Current IZ(MIN) V Z = VREF (1) 0.4 1 mA Parameter Symbol Maximum Units Cathode Voltage V z 37 V Continuous Cathode Current I z 150 mA Reference Input Current I REF 10 mA Power Dissipation at TA - 25°C S0-8 TO-92 SOT-23-3 P D 750 775 200 mW Thermal Resistance SOT-23-3 S0-8 TO-92 O JA 575 175 160 °C/W Operating Junction Temperature Range T J -40 to +150 °C Storage Temperature Range T STG -65 to +150 °C Lead Temperature (Soldering) 10 seconds T LEAD 300 °C ESD Rating (Human Body Model) T ESD 2 kV

Bay Linear, Inc 2478Armstrong St., Livermore CA USA 9550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B3431 B3431 1% Parameter Symbol Condition Min Typ Max Units Reference Voltage V REF V Z = VREF1 IZ = 10mA(1) 2.474 2.50 2.526 V VREF Temp Deviation V DEV V Z = VREF1 IZ = 10mA(1) 4 17 mV IZ = 10mA,ΔVZ = 10V to VRef -2.7 -1.0 Ratio of Change in VREF To Change in VZ Δ VREF ΔVZ IZ = 10mA,ΔVZ = 36V to 10V -2.0 -0.4 0.3 mV/V Reference Input Current IREF R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.7 4 µµµµA IREF Temperature Deviation IREF(DEV) R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.4 1.2 µµµµA Off-State Cathode Current IZ (OFF) V REF = 0V, VZ =36V(3) 0.1 1 µµµµA Dynamic Output Impedance rz F <1kHz, VZ = VREF IZ = 1mA to 100mA(1) 0.20 0.50 Ω Minimum Operating Current IZ(MIN) V Z = VREF (1) 0.4 1 mA B3431 2% Parameter Symbol Condition Min Typ Max Units Reference Voltage V REF V Z = VREF1 IZ = 10mA(1) 2.445 2.495 2.545 V VREF Temp Deviation V DEV V Z = VREF1 IZ = 10mA(1) 4 17 mV IZ = 10mA,ΔVZ = 10V to VRef -2.7 -1.0 Ratio of Change in VREF To Change in VZ Δ VREF ΔVZ IZ = 10mA,ΔVZ = 36V to 10V -2.0 -0.4 0.3 mV/V Reference Input Current IREF R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.7 4 µµµµA IREF Temperature Deviation IREF(DEV) R1 = 10kΩ , R2 = ∞ , IZ = 10mA(2) 0.4 1.2 µµµµA Off-State Cathode Current IZ (OFF) V REF = 0V, VZ =36V(3) 0.1 1 µµµµA Dynamic Output Impedance rz F <1kHz, VZ = VREF IZ = 1mA to 100mA(1) 0.20 0.50 Ω Minimum Operating Current IZ(MIN) V Z = VREF (1) 0.4 1 mA

Bay Linear, Inc 2478Armstrong St., Livermore CA USA 9550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B3431 Packaging Information SOT-23 Advance Information- These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations, computer simulations and/ or initial prototype evaluation. Preliminary Information- These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits are subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges. The application circuit examples are only to explain the representative applications of the devices and are not intended to gua rantee any circuit design or permit any industrial property right to other rights to execute. Bay Linear takes no responsibility for any problems related to any industrial property right resulting from the use of the contents shown in the data book. Typical parameters can and do vary in different applications. Customer’s technical experts must validate all operating parameters including “ Typical” for each customer application. LIFE SUPPORT AND NUCLEAR POLICY Bay Linear products are not authorized for and should not be used within life support systems which are intended for surgical implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications without the specific written consent of Bay Linear President. 0.015 - 0.018 (0.381 - 0.457) 0.020 - 0.024 (0.508 - 0.610) 0.110 - 0.120 (2.794 - 3.048) 0.001 - 0.004 (0.025 - 0.102) 0.030 - 0.041 (0.762 - 1.041) 0.018 - 0.024 (0.457 - 0.610) 0.070 - 0.080 (1.778 - 2.032) 0.035 - 0.040 (0.889 - 1.016) 0.047 - 0.055 (1.194 - 1.397) 0.083 - 0.098 (2.108 - 2.489) 0.003 - 0.005 (0.076 - 0.127)