Programmable Shunt Regulator KA431A, KA431L Description The KA431A and KA431L are threeterminal adjustable regulators with a guaranteed thermal stability over the operating temperature www.onsemi.com range. The output voltage can be set to any value between V REF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 . Active output circuitry provides a sharp turnon characteristic, making these devices excellent replacements for Zener diodes in many applications. Features 1 1 Programmable Output Voltage to 36 V 2 2 3 3 Low Dynamic Output Impedance: 0.2 (Typical) TO92 TO92 Sink Current Capability: 1.0 to 100 mA CASE 135AN CASE 135AR Equivalent FullRange Temperature Coefficient of 50 ppm/C (Typical) MARKING DIAGRAM Temperature Compensated for Operation Over Full Rated Operating Temperature Range Low Output Noise Voltage KA Fast Turnon Response 431XX ALYW KA431XX = Specific Device Code A = Assembly Location L = Wafer Lot YW = Assembly Start Week PIN CONNECTIONS Figure 1. Block Diagram 1 Ref 2 Anode 3 Cathode 12 3 12 3 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. Semiconductor Components Industries, LLC, 2004 1 Publication Order Number: April, 2021 Rev. 4 KA431/DKA431A, KA431L ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Cathode Voltage 37 V KA I Cathode Current Range (Continuous) 100 to +150 mA KA I Reference Input Current Range 0.05 to +10 mA REF P Power Dissipation 770 mW D R Thermal Resistance, Junction to Ambient 160 C/W jA T Operating Temperature Range 25 to +85 C OPR T Junction Temperature 150 C J T Storage Temperature Range 65 to +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. RECOMMENDED OPERATING CONDITIONS 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. ELECTRICAL CHARACTERISTICS (Values are at T = 25C unless otherwise noted) A KA431A KA431L Min Typ Max Min Typ Max Symbol Parameter Conditions Unit V Reference Input V = V , I = 10 mA 2.470 2.495 2.520 2.482 2.495 2.508 V REF KA REF KA Voltage V / T Deviation of V = V , I = 10 mA 4.5 17.0 4.5 17.0 mV REF KA REF KA Reference Input T T T (Note 1) MIN A MAX Voltage Over Temperature V / Ratio of Change I = 10 mA mV/V V = 10 VV 1.0 2.7 1.0 2.7 REF KA KA REF V in Reference KA Input Voltage to V = 36 V10 V 0.5 2.0 0.5 2.0 the Change in KA Cathode Voltage I Reference Input I = 10 mA, R1 = 10 k , R2 = 1.5 4.0 1.5 4.0 A REF KA Current I / T Deviation of 0.4 1.2 0.4 1.2 A I = 10 mA, R1 = 10 k , R2 = , REF KA Reference Input T = Full Range A Current Over Full Temperature Range I Minimum V = V 0.45 1.00 0.45 1.00 mA KA(MIN) KA REF Cathode Current for Regulation Off Stage V = 36 V, V = 0 0.05 1.00 0.05 1.00 I A KA(OFF) KA REF Cathode Current Dynamic V = V , I = 1 to 100 mA, Z 0.15 0.50 0.15 0.50 KA REF KA KA Impedance f 1.0 kHz 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. 1. T = 25C, T = +85C. MIN MAX www.onsemi.com 2