KA431SMFTF

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Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. KA431S / KA431SA / KA431SL Programmable Shunt Regulator Features Description • • • • The KA431S / KA431SA / KA431SL are three-terminal adjustable regulator series with a guaranteed thermal stability over the 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. These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuitry provides a sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. Programmable Output Voltage to 36 V Low Dynamic Output Impedance 0.2 Ω (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 SOT-23F 3 1 2 MF- 1.Cathode 2. Ref 3. Anode MF2- 1. Ref 2. Cathode 3. Anode Ordering Information Part Number Operating Output Voltage Temperature Tolerance Range KA431SMFTF 2% KA431SMF2TF KA431SAMFTF KA431SAMF2TF -25 to +85°C KA431SLMFTF KA431SLMF2TF © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 1% 0.5% Top Mark Package Packing Method SOT-23F 3L Tape and Reel 43A 43D 43B 43E 43C 43F www.fairchildsemi.com KA431S / KA431SA / KA431SL — Programmable Shunt Regulator March 2015 KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Block Diagram CATHODE REFERENCE + - 2.5 Vref ANODE CATHODE (K) REFERENCE (R) ANODE(A) Figure 1. Block Diagram Marking Information 43A 43B 2% tolerance 1% tolerance 43A 43D 43E 2% tolerance 1% tolerance 43C MF- MF2- 0.5% tolerance 43C 43F 0.5% tolerance Figure 2. Top Mark (per package) © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 www.fairchildsemi.com 2 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 Value Unit VKA Cathode Voltage 37 V IKA Cathode Current Range (Continuous) -100 ~ +150 mA IREF Reference Input Current Range -0.05 ~ +10 mA Thermal Resistance Junction-Air MF Suffix Package 350 °C/W PD Power Dissipation(3,4) MF Suffix Package 350 mW TJ Junction Temperature 150 °C (1,2) RθJA TOPR Operating Temperature Range -25 ~ +85 °C TSTG Storage Temperature Range -65 ~ +150 °C Notes: 1. Thermal resistance test board Size: 1.6mm x 76.2mm x 114.3mm (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) / RθJA. Recommended Operating Conditions 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 1 100 mA © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 www.fairchildsemi.com 3 KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Absolute Maximum Ratings Values are at TA = 25°C unless otherwise noted. Symbol Parameter VREF Reference Input Voltage VKA = VREF, IKA = 10 mA Deviation of Reference Input Voltage OverTemperature VKA = VREF, IKA = 10 mA, TMIN ≤ TA ≤ TMAX ΔVREF/ΔT Conditions KA431S KA431SA KA431SL Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 4.5 17.0 4.5 17.0 4.5 17.0 ΔVKA = 10 V - VREF -1.0 -2.7 -1.0 -2.7 -1.0 -2.7 Unit V mV Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage IKA = 10 mA ΔVKA = 36 V - 10 V -0.5 -2.0 -0.5 -2.0 -0.5 -2.0 Reference Input Current IKA = 10 mA, R1 = 10 kΩ, R2 = ∞ 1.5 4.0 1.5 4.0 1.5 4.0 μA Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 kΩ, R2 = ∞ TA = Full Range 0.4 1.2 0.4 1.2 0.4 1.2 μA IKA(MIN) Minimum Cathode Current for Regulation VKA = VREF 0.45 1.00 0.45 1.00 0.45 1.00 mA IKA(OFF) Off - Stage Cathode Current VKA = 36 V, VREF = 0 0.05 1.00 0.05 1.00 0.05 1.00 μA ZKA Dynamic Impedance VKA = VREF, IKA = 1 to 100 mA, f ≥ 1.0 kHz 0.15 0.50 0.15 0.50 0.15 0.50 Ω ΔVREF/ΔVKA IREF ΔIREF/ΔT mV/V Note: 5. TMIN = -25°C, TMAX = +85°C © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 www.fairchildsemi.com 4 KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Electrical Characteristics(5) LM431S KA431S LM431S KA431S Figure 4. Test Circuit for VKA ≥ VREF Figure 3. Test Circuit for VKA= VREF KA431S Figure 5. Test Circuit for IKA(OFF) Typical Applications R1 V O = V ref  1 + -------  R2 R1 V O =  1 + ------- V ref  R2 KA431S R1 V O =  1 + ------- V ref  R2 KA431S KA431S Figure 6. Shunt Regulator Figure 7. Output Control for Three-Terminal Fixed Regulator KA431S KA431S Figure 9. Current Limit or Current Source © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 Figure 8. High Current Shunt Regulator Figure 10. Constant-Current Sink www.fairchildsemi.com 5 KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Test Circuits 800 150 VKA = VREF VKA = VREF o TA = 25 C o I , CATHODE CURRENT (uA) (μA) IKA - Cathode Current 100 50 600 IKA(MIN) 400 200 KA 0 K I , Cathode Current Current (mA) (mA) IK - Cathode TA = 25 C -50 -100 -2 -1 0 1 2 0 -200 3 -1 0 VKA, Cathode Voltage (V) 3 Figure 12. Cathode Current vs. Cathode Voltage 0.20 3.5 0.18 Iref - Reference Input Current (μA) 0.16 Iref, Reference Input Current (uA) Ioff - Off-State Cathode Current (μA) Ioff , Off-State Cathode Current (uA) 2 VKA - Cathode Voltage (V) Figure 11. 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) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -50 -25 0 25 50 75 100 125 -25 150 0 25 50 75 100 125 oo TA -TAmbient C) , AmbientTemperature Temperature (( C) A o TAT-, Ambient Temperature Ambient Temperature ( C) (oC) A Figure 13. OFF-State Cathode Current vs. Ambient Temperature Figure 14. 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 0 -10 1k 10k 100k 1M 0 10M 8 12 16 20 Figure 16. Pulse Response Figure 15. Frequency vs. Small Signal Voltage Amplification © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 4 Time (us) Time (μs) Frequency (Hz) Frequency (Hz) www.fairchildsemi.com 6 KA431S / KA431SA / KA431SL — 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 3 2 40 1 20 B 0 100p 1n 10n 100n 1? 0 0.0 10? CCLL,-LOAD LoadCAPACITANCE Capacitance 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Anode-Ref. Voltage (V) Anode-Ref. Voltage(V) Figure 18. Anode-Reference Diode Curve Figure 17. Stability Boundary Conditions 5 VREF , Reference Input Voltage (V) 2.51 Current (mA) Current(mA) 4 3 2 1 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.49 2.48 2.47 2.46 -50 2.0 -25 0 25 50 75 100 125 o TA, Ambient Temperature ( C) Ref.-Cathode (V) Ref.-Cathode Voltage Voltage(V) Figure 19. Reference-Cathode Diode Curve © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 2.50 Figure 20. Reference Input Voltage vs. Ambient Temperature www.fairchildsemi.com 7 KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Typical Performance Characteristics KA431S / KA431SA / KA431SL — Programmable Shunt Regulator Physical Dimensions Figure 21. 3-LEAD, SOT23, FLAT LEAD, LOW PROFILE © 2002 Fairchild Semiconductor Corporation KA431S / KA431SA / KA431SL Rev. 6.7 www.fairchildsemi.com 8 TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended to be an exhaustive list of all such trademarks. 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