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TL431 Datasheet(PDF) 1 Page - Analog Intergrations Corporation |
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TL431 Datasheet(HTML) 1 Page - Analog Intergrations Corporation |
1 / 14 page AIC431/TL431A/TL431 Adjustable Precision Shunt Regulator Analog Integrations Corporation Si-Soft Research Center DS-431G-05 20120615 3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 FEATURES Precision Reference Voltage. AIC431 :2.495V 0.5% TL431A :2.495V 1.0% TL431 :2.495V 1.6% Sink Current Capability: 200mA. Minimum Cathode Current for Regulation: 250 A. Equivalent Full-Range Temperature Coefficient: 50 ppm/ C. Fast Turn-On Response. Low Dynamic Output Impedance: 0.08 . Adjustable Output Voltage. Low Output Noise. Space Saving Packages: SOT-89, SOT-23, TO-92 and SO-8. APPLICATIONS Linear Regulators. Adjustable Supplies. Switching Power Supplies. Battery Operated Computers. Instrumentation. Computer Disk Drivers. TYPICAL APPLICATION CIRCUIT VIN AIC431 + VOUT R1 R2 + C2 C1 R3 VOUT=(1+R1/R2) VREF Precision Regulator DESCRIPTION The AIC431, TL431A and TL431 are 3- terminal adjustable precision shunt regulators with guaranteed temperature stability over the applicable extended commercial temperature range. The output voltage may be set at any level greater than 2.495V (VREF) up to 30V merely by selecting two external resistors that act as a voltage divider network. These devices have a typical output impedance of 0.08 . Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent improved replacements for zener diodes in many applications. The precise 0.5% reference voltage tolerance of the AIC431 makes it possible in many applications to avoid the use of a variable resistor, consequently saving cost and eliminating drift and reliability problems associated with it. |
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