Programmable Shunt Regulator KA431S, KA431SA, KA431SL Description www.onsemi.com The KA431S / KA431SA / KA431SL are threeterminal adjustable regulator series with a guaranteed thermal stability over the operating temperature range. The output voltage can be set to any value between 3 V (approximately 2.5 V) and 36 V with two external resistors. REF MF MF2 These devices have a typical dynamic output impedance of 0.2 . 1. Cathode 1. Ref 2. Ref 2. Cathode Active output circuitry provides a sharp turnon characteristic, 1 2 3. Anode 3. Anode making these devices excellent replacement for zener diodes in many SOT23FL3L applications. CASE 318AB Features DEVICE MARKING INFORMATION Programmable Output Voltage to 36 V Low Dynamic Output Impedance 0.2 (Typical) See general marking information in the device marking section on page 2 of this data sheet. Sink Current Capability: 1.0 to 100 mA Equivalent FullRange Temperature Coefficient of 50 ppm/C (Typical) ORDERING INFORMATION Temperature Compensated for Operation Over Full Rated Operating See detailed ordering and shipping information on Temperature Range page 6 of this data sheet. Low Output Noise Voltage Fast Turnon Response These Devices are PbFree and Halogen Free CATHODE REFERENCE + 2.5 Vref ANODE CATHODE (K) REFERENCE (R) ANODE(A) Figure 1. Block Diagram Semiconductor Components Industries, LLC, 2002 1 Publication Order Number: March, 2021 Rev. 7 KA431SL/DKA431S, KA431SA, KA431SL MARKING INFORMATION MF 43A 43C 43B 1% tolerance 0.5% tolerance 2% tolerance 43D 43E 43F MF2 1% tolerance 0.5% tolerance 2% tolerance Figure 2. Top Mark (per package) ABSOLUTE MAXIMUM RATINGS T = 25C unless otherwise noted A Symbol Parameter Value Unit V Cathode Voltage 37 V KA I Cathode Current Range (Continuous) 100 ~ +150 mA KA I Reference Input Current Range 0.05 ~ +10 mA REF R Thermal Resistance JunctionAir (Note 1) (Note 2) 350 C/W JA MF Suffix Package I Power Dissipation (Note 3) (Note 4) 350 mW REF MF Suffix Package T Junction Temperature 150 C J T Operating Temperature Range 25 ~ +85 C OPR T Storage Temperature Range 65 ~ +150 C STG 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: JESD513, JESD517 2. Assume no ambient airflow. 3. T = 150C Ratings apply to ambient temperature at 25C. JMAX 4. Power dissipation calculation: P = (T T ) / R . D J A JA RECOMMENDED OPERATING RANGES Symbol Parameter Min. Max. Unit V Cathode Voltage V 36 V KA REF I Cathode Current 1 100 mA KA 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