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Zetex ZCST1555 Datasheet and Astable Operation Circuit Diagram for Portable, Battery Powered Equipment

Monday, 27. July 2009 by admindata

The following figure shows you about circuit diagram of the ZCST1555 in Astable Operation Mode as a part of a single cell boost converter. With very low quiescent current (74 mA), 0.9V guaranteed supply operating voltage, and compatibility with battery technologies of operating temperature range, make this ZCST1555 from Zetex Semiconductors used in various portable and battery powered equipment and low voltage, low power systems applications.

circuit diagram of the ZCST1555 in Astable Operation Mode as a part of a single cell boost converter

In this Zetex ZCST1555 astable mode, the frequency and duty cycle can be accurately and independently controlled with two external resistors and one capacitor. The circuit diagram (click to enlarge) generates a 5 V supply from a single battery cell and the output voltage of the circuit is maintained down to 0.9V input so that power economy can be optimised for an extended battery life.

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