AS431 Astec Power, AS431 Datasheet
AS431
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AS431 Summary of contents
Page 1
... This application note demonstrates the versatil- ity of the AS431 in typical applications and pre- sents data useful for gaining a complete under- standing of its application. Figure 1 shows the schematic symbol and func- tional block diagram for the AS431 ...
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... The circuit can be made variable by using a potentiometer for R1. The AS431 As An Error Amplifier V OUT I K The AS431 can be used in both linear and switch mode power supplies as high gain error amplifier with a built-in temperature compensated voltage reference. Linear Voltage Regulator (B) Figure 3 shows a simple linear voltage regulator. ...
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... Figure 6 illustrates several of these applications. POWER TRANSFORMER SWITCHING DC BUS CIRCUIT Figure 4. A Switch-Mode Power Supply Using the AS431 as a Reference/Error Amplifier ASTEC Semiconductor Frequency Compensation Frequency compensation of a power supply con- trol loop is achieved with an external compensa- tion network, typically connected between the reference and cathode pins of the AS431 ...
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... The AS431 also can replace an ordinary zener diode in any circuit where a higher accuracy and temperature stability is required. Viewing the AS431 as a high gain transistor with a V 2.5 V increases usage possibilities. Applications for this device are limited only by the imagination. Several practical applications are illustrated in Figure 6 ...
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... ASTEC and the ASTEC logo are trademarks of ASTEC (BSR) PLC. ASTEC SEMICONDUCTOR 255 Sinclair Frontage Road • Milpitas, California 95035 ASTEC Semiconductor VOLTAGE MONITOR + LED ON CONSTANT CURRENT SINK +V Figure 6. Typical AS431 Applications • Tel. (408) 263-8300 145 AS431 + R1/R2) REF V REF ...