KA431 / KA431A / KA431L -- Programmable Shunt Regulator July 2013 KA431 / KA431A / KA431L Programmable Shunt Regulator
Features
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 Description
The KA431 / KA431A / KA431L are three-terminal adjustable regulators 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 . Active output circuitry provides a sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications. TO-92 1 1. Ref 2. Anode 3. Cathode 8-SOIC 1 1.Cathode 2.3.6.7.Anode 4.5.NC 8.Ref Ordering Information
Part Number
KA431DTF KA431ADTF KA431AZBU KA431AZTA KA431LZTA 0.5% -25 ~ +85°C 1% Operating Temperature Range Output Voltage Tolerance
2% Top Mark
431 431A KA431AZ KA431AZ KA431LZ Package
8-SOIC 8-SOIC TO-92 TO-92 TO-92 Packing Method
Tape and Reel Tape and Reel Bulk Ammo Ammo © 2004 Fairchild Semiconductor Corporation KA431 / KA431A / KA431L Rev. 1.2.1 www.fairchildsemi.com 1 KA431 / KA431A / KA431L -- Programmable Shunt Regulator Block Diagram REFERENCE + 2.5 Ref CATHODE 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
VKA IKA IREF PD RjA TOPR TJ TSTG Cathode Voltage Parameter
Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation TO-92, 8-SOIC Packages Thermal Resistance, Junction to Ambient TO-92, 8-SOIC Packages Operating Temperature Range Junction Temperature Storage Temperature Range Value
37 -100 to +150 -0.05 to +10 770 160 -25 to +85 150 -65 to +150 Unit
V mA mA mW °C/W °C °C °C Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditio …
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