FAN431AZXA

Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com                                                                                                                                                                                                                FAN431A Programmable Shunt Regulator Features Description • • • • The FAN431A is a three-terminal output adjustable regulator with thermal stability over the full operating temperature range. The output voltage can be set to any value between VREF (approximately 2.5 V) and 36 V with two external resistors. This device has a typical dynamic output impedance of 0.2 . Active output circuit provides a sharp turn-on characteristic, making this device excellent replacements for zener diodes in many applications. Programmable Output Voltage to 36 V Low Dynamic Output Impedance: 0.2 (Typical) Sink Current Capability: 1.0 to 100 mA Equivalent Full-Range Temperature Coefficient of 50 ppm/°C (Typical) • Temperature Compensated for Operation Over Full Rated Operating Temperature Range • Low Output Noise Voltage • Fast Turn-on Response TO-92 1 1. Ref 2. Anode 3. Cathode Ordering Information Part Number Operating Temperature Range Output Voltage Tolerance Top Mark Package Packing Method FAN431AZXA -25 to +85C 1% FAN431A TO-92 3L Ammo © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 www.fairchildsemi.com FAN431A — Programmable Shunt Regulator March 2015 FAN431A — Programmable Shunt Regulator Block Diagram CATHODE + REFERENCE 2.5 Vref ANODE CATHODE (K) REFERENCE (R) ANODE(A) Figure 1. Block Diagram Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted. Symbol Parameter VKA Cathode Voltage IKA Cathode current Range (Continuous) IREF Reference Input Current Range R Thermal Resistance, Junction to Ambient Z Suffix Package JA (1,2) Value Unit 37 V -100 to +150 mA -0.05 to +10.00 mA 132 C/W PD Power Dissipation (3,4) Z Suffix Package 940 mW TJ Junction Temperature 150 C TOPR Operating Temperature Range -25 to +85 C TSTG Storage Temperature Range -65 to +150 C Notes: 1. Thermal resistance test board Size: 1.6 mm x 76.2 mm x 114.3 mm (1S0P) JEDEC Standard: JESD51-3, JESD51-7. 2. Assume no ambient airflow. 3. TJMAX = 150C, Ratings apply to ambient temperature at 25C. 4. Power dissipation calculation: PD = (TJ - TA) / R JA. © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 www.fairchildsemi.com 2 The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit VKA Cathode Voltage VREF 36 V IKA Cathode Current 1.0 100 mA Electrical Characteristics(5) Values are at TA = 25°C unless otherwise noted. Symbol VREF VREF/ T Parameter Conditions FAN431A Min. Typ. Max. Unit Reference Input Voltage VKA = VREF, IKA = 10 mA 2.470 2.495 2.520 V Deviation of Reference Input Voltage OverTemperature VKA = VREF, IKA = 10 mA, TMIN TA TMAX 4.5 17.0 mV VKA = 10V - VREF -1.0 -2.7 VKA = 36 V - 10 V -0.5 -2.0 VREF/ VKA Ratio of Change in Reference Input Voltage to Change in Cathode Voltage IKA = 10 mA IREF Reference Input Current IKA = 10 mA, R1 = 10 k , R2 = 1.5 4.0 A IREF/ T Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 k , R2 = TA = Full Range 0.4 1.2 A IKA(MIN) Minimum Cathode Current for Regulation VKA = VREF 0.45 1.00 mA IKA(OFF) Off-Stage Cathode Current VKA = 36 V, VREF = 0 0.05 1.00 A Dynamic Impedance VKA = VREF, IKA = 1 to 100 mA, f 0.15 0.50 ZKA 1.0 kHz mV/V Note: 5. TMIN = -25C, TMAX = +85C. © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 www.fairchildsemi.com 3 FAN431A — Programmable Shunt Regulator Recommended Operating Conditions FAN431 FAN431 Figure 3. Test Circuit for VKA Figure 2. Test Circuit for VKA= VREF VREF FAN431 Figure 4. Test Circuit for IKA(OFF) Typical Applications R1 V O = 1 + ------- V ref R 2 V R1 V 1 O = ref + ------R 2 R1 V O = 1 + ------- V ref R 2 LM7805/MC7805 FAN431 FAN431 Figure 5. Shunt Regulator Figure 6. Output Control for ThreeTerminal Fixed Regulator FAN431 Figure 7. High-Current Shunt Regulator FAN431 Figure 8. Current Limit or Current Source Figure 9. Constant-Current Sink © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 FAN431 www.fairchildsemi.com 4 FAN431A — Programmable Shunt Regulator Test Circuits 800 150 VKA = VREF VKA = VREF o TA = 25 C o I , CATHODE CURRENT (uA) (A) IKA - Cathode Current 100 50 600 IKA(MIN) 400 200 KA 0 K I , Cathode Current Current (mA) (mA) IK - Cathode T A = 25 C -50 -100 -2 -1 0 1 2 0 -200 3 -1 0 VKA, Cathode Voltage (V) 3 Figure 11. Cathode Current vs. Cathode Voltage 0.20 3.5 0.18 Iref - Reference Input Current (A) 0.16 3.0 Iref, Reference Input Current (uA) Ioff - Off-State Cathode Current (A) Ioff , Off-State Cathode Current (uA) 2 VKA - Cathode Voltage (V) Figure 10. Cathode Current vs. Cathode Voltage 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 -50 1 VKA, CATHODE VOLTAGE (V) VKA - Cathode Voltage (V) -25 0 25 50 75 100 125 2.5 2.0 1.5 1.0 0.5 0.0 -50 150 -25 0 25 50 75 100 125 oo TA -TAmbient C) , AmbientTemperature Temperature (( C) A o TAT-, Ambient Temperature Ambient Temperature ( C) (oC) A Figure 12. OFF-State Cathode Current vs. Ambient Temperature Figure 13. Reference Input Current vs. Ambient Temperature 6 60 o TA=25 C 5 40 30 20 INPUT 4 Voltage Swing (V) 50 Voltage Swing (V) Open Loop (dB) Open LoopVoltage Voltage Gain Gain (dB) o TA = 25 C IKA = 10mA 3 OUTPUT 2 10 1 0 -10 0 1k 10k 100k 1M 10M 4 8 12 16 20 Figure 15. Pulse Response Figure 14. Frequency vs. Small Signal Voltage Amplification © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 0 Time (us) Time (s) Frequency (Hz) Frequency (Hz) www.fairchildsemi.com 5 FAN431A — Programmable Shunt Regulator Typical Performance Characteristics (Continued) 5 140 A VKA = Vref B VKA = 5.0 V @ IK = 10mA 4 o TA = 25 C A 100 Current (mA) Current(mA) IKIK,-CATHODE CathodeCURRENT(mA) Current (mA) 120 80 60 2 40 1 B 20 0 100p 1n 10n 100n 1? 0 0.0 10? CCLL,-LOAD LoadCAPACITANCE Capacitance 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 VREF , Reference Input Voltage (V) 2.51 4 3 2 1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.50 2.49 2.48 2.47 2.46 -50 2.0 Ref.-Cathode (V) Ref.-Cathode Voltage Voltage(V) Figure 18. Reference-Cathode Diode Curve -25 0 25 50 75 TA, Ambient Temperature ( C) o 100 125 Figure 19. Reference Input Voltage vs. Ambient Temperature © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 0.4 Figure 17. Anode-Reference Diode Curve 5 0 0.0 0.2 Anode-Ref. Voltage (V) Anode-Ref. Voltage(V) Figure 16. Stability Boundary Conditions Current (mA) Current(mA) 3 www.fairchildsemi.com 6 FAN431A — Programmable Shunt Regulator Typical Performance Characteristics FAN431A — Programmable Shunt Regulator Physical Dimensions Figure 20. 3-Lead, TO-92, Molded, 0.200 in Line Spacing Lead Form © 2007 Fairchild Semiconductor Corporation FAN431A Rev. 3.4 www.fairchildsemi.com 7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. 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