KA431SLMFTF

Programmable Shunt Regulator KA431S, KA431SA, KA431SL 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 W. Active output circuitry provides a sharp turn−on characteristic, making these devices excellent replacement for zener diodes in many applications. Features • • • • • • • • Programmable Output Voltage to 36 V Low Dynamic Output Impedance 0.2 W (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 These Devices are Pb−Free and Halogen Free REFERENCE www.onsemi.com 3 1 2 MF 1. Cathode 2. Ref 3. Anode MF2 1. Ref 2. Cathode 3. Anode SOT23−FL3L CASE 318AB DEVICE MARKING INFORMATION See general marking information in the device marking section on page 2 of this data sheet. ORDERING INFORMATION See detailed ordering and shipping information on page 6 of this data sheet. CATHODE + − 2.5 Vref ANODE CATHODE (K) REFERENCE (R) ANODE(A) Figure 1. Block Diagram © Semiconductor Components Industries, LLC, 2002 March, 2021 − Rev. 7 1 Publication Order Number: KA431SL/D KA431S, KA431SA, KA431SL MARKING INFORMATION MF − 43A 43B 43C 2% tolerance 1% tolerance 0.5% tolerance 43D 43E 43F 2% tolerance 1% tolerance 0.5% tolerance MF2 − Figure 2. Top Mark (per package) ABSOLUTE MAXIMUM RATINGS TA = 25°C unless otherwise noted Parameter Symbol VKA Cathode Voltage Value Unit 37 V IKA Cathode Current Range (Continuous) −100 ~ +150 mA IREF Reference Input Current Range −0.05 ~ +10 mA RθJA Thermal Resistance Junction−Air (Note 1) (Note 2) MF Suffix Package 350 °C/W IREF Power Dissipation (Note 3) (Note 4) MF Suffix Package 350 mW 150 _C TOPR TJ Junction Temperature Operating Temperature Range −25 ~ +85 _C TSTG Storage Temperature Range −65 ~ +150 _C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 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) / RθJA. RECOMMENDED OPERATING RANGES Symbol Parameter Min. Max. Unit VKA Cathode Voltage VREF 36 V IKA Cathode Current 1 100 mA Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. www.onsemi.com 2 KA431S, KA431SA, KA431SL ELECTRICAL CHARACTERISTICS (Note 5) Values are at TA = 25°C unless otherwise noted KA431S Min. Symbol Parameter Conditions VREF Reference Input Voltage VKA = VREF, IKA = 10 mA ΔVREF/ΔT Deviation of Reference Input Voltage Over− Temperature VKA = VREF, IKA = 10 mA, TMIN ≤ TA ≤ TMAX ΔVREF/ΔVKA Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage IKA = 10 mA Typ. KA431SA Max. Min. Typ. KA431SL Max. Min. Typ. Max. 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 Unit V − 4.5 17.0 − 4.5 17.0 − 4.5 17.0 mV ΔVKA = 10 V - VREF − −1.0 −2.7 − −1.0 −2.7 − −1.0 −2.7 mV/V ΔVKA = 36 V - 10 V − −0.5 −2.0 − −0.5 −2.0 − −0.5 −2.0 IREF Reference Input Current IKA = 10 mA, R1 = 10 kW, R2 = ∞ − 1.5 4.0 − 1.5 4.0 − 1.5 4.0 mA ΔIREF/ΔT Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 kW, R2 = ∞ TA = Full Range − 0.4 1.2 − 0.4 1.2 − 0.4 1.2 mA 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 mA 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 W Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 5. TMIN = −25°C, TMAX = +85°C TEST CIRCUITS VKA INPUT VKA INPUT IKA IKA KA431S VREF R1 IREF R2 VREF KA431S VKA = VREF (1 + R1/R2) + IREF R1 Figure 3. Test Circuit for VKA = VREF INPUT Figure 4. Test Circuit for VKA . VREF VKA IKA(OFF) KA431S Figure 5. Test Circuit for IKA(OFF) www.onsemi.com 3 KA431S, KA431SA, KA431SL TYPICAL APPLICATIONS ǒ VO + 1 ) Ǔ ǒ R1 V ref R2 VO + 1 ) VI VO VI R1 VREF Ǔ R1 V ref R2 IN KA70805 OUT COMMON VO R1 R2 KA431S KA431S Figure 6. Shunt Regulator ǒ VO + 1 ) R2 Figure 7. Output Control for Three−Terminal Fixed Regulator Ǔ R1 V ref R2 IO + VI VO VI V REF R CL RCL IO R1 KA431S R2 KA431S Figure 9. Current limit or Current Source Figure 8. High Current Shunt Regulator IO + VI V REF RS IO KA431S RS Figure 10. Constant−Current Sink www.onsemi.com 4 KA431S, KA431SA, KA431SL TYPICAL CHARACTERISTICS 800 VKA = VREF TA = 25°C 100 IKA − Cathode Current (mA) IK − Cathode Current (mA) 150 50 0 −50 −100 −2 −1 0 1 2 VKA = VREF TA = 25°C 600 400 IKA(MIN) 200 0 −200 −1 3 0 VKA − Cathode Voltage (V) 0.20 3 3.5 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 −50 −25 0 25 50 75 100 125 150 3.0 2.5 2.0 1.5 1.0 0.5 0.0 −50 −25 0 TA − Ambient Temperature (5C) 25 50 75 100 125 TA − Ambient Temperature (5C) Figure 13. OFF−State Cathode Current vs. Ambient Temperature Figure 14. Reference Input Current vs. Ambient Temperature 6 60 TA = 25°C TA = 25°C IKA = 10 mA 50 5 40 Voltage Swing (V) Open Loop Voltage Gain (dB) 2 Figure 12. Cathode Current vs. Cathode Voltage Iref − Reference Input Current (mA) Ioff − Off−State Cathode Current (mA) Figure 11. Cathode Current vs. Cathode Voltage 30 20 10 INPUT 4 3 OUTPUT 2 1 0 −10 1 VKA − Cathode Voltage (V) 1k 10k 100k 1M 10M 0 0 Frequency (Hz) 4 8 12 Time (ms) Figure 15. Frequency vs. Small Signal Voltage Amplification Figure 16. Pulse Response www.onsemi.com 5 16 20 KA431S, KA431SA, KA431SL TYPICAL CHARACTERISTICS (Continued) 120 A 100 5 A: VKA = Vref B: VKA = 5.0 V @ IK = 10 mA TA = 25°C 4 Current (mA) IK − Cathode Current (mA) 140 80 60 40 0 10p 1n 2 1 B 20 3 1m 100n 10n 0 10m 0.0 0.2 0.4 CL − Load Capacitance 1.0 1.2 1.4 1.6 1.8 2.0 2.51 VREF, Reference Input Voltage (V) 5 4 Current (mA) 0.8 Figure 18. Anode−Reference Diode Curve Figure 17. Stability Boundary Conditions 3 2 1 0 0.0 0.6 Anode−Reference Voltage (V) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.50 2.49 2.48 2.47 2.46 −50 Reference−Cathode Voltage (V) −25 0 25 50 75 100 125 TA , Ambient Temperature (5C) Figure 20. Reference Input Voltage vs. Ambient Temperature Figure 19. Reference−Cathode Diode Curve ORDERING INFORMATION Part Number KA431SMFTF Output Voltage Tolerance Operating Temperature Range 2% −25 to +85°C KA431SMF2TF KA431SAMFTF Package Shipping† 43A SOT23−FL3L (Pb−Free) 3000 / Tape and Reel 43D 1% 43B 0.5% 43C KA431SAMF2TF KA431SLMFTF Top Mark 43E KA431SLMF2TF 43F †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. www.onsemi.com 6 MECHANICAL CASE OUTLINE PACKAGE DIMENSIONS SOT23−FL3L CASE 318AB ISSUE O DATE 11 DEC 2020 GENERIC MARKING DIAGRAM* XXXM 1 XXX = Specific Device Code M = Date Code DOCUMENT NUMBER: DESCRIPTION: 98AON27911H SOT23−FL3L *This information is generic. Please refer to device data sheet for actual part marking. Pb−Free indicator, “G” or microdot “G”, may or may not be present. Some products may not follow the Generic Marking. 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