Zetex - AN23 - Zetex SPICE models - understanding ... - Diodes, Inc.
Zetex - AN23 - Zetex SPICE models - understanding ... - Diodes, Inc.
Zetex - AN23 - Zetex SPICE models - understanding ... - Diodes, Inc.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
VCE(sat) Bipolar transistors are an<br />
excellent choice for this function<br />
(otherwise known as high side drivers,<br />
circuit block switches etc) as they allow<br />
a much more compact and cost effective<br />
design than competing MOS options.<br />
The generic form of the circuit shown in<br />
Figure 9, shows an FMMT717 SuperSOT<br />
(optimised SOT23) Bipolar transistor<br />
operating as a high side 600mA switch<br />
-as used for a mobile telephone transmit<br />
switch for example. Figure 10 shows the<br />
conditions experienced by the device at<br />
initial switch-on as the 100μF capacitor<br />
charges.<br />
<strong>AN23</strong> - 12<br />
Application Note 23<br />
Issue 2 March 1996<br />
Figure 9<br />
Positive Line Switch using <strong>Zetex</strong> FMMT717 SuperSOT SOT23 PNP Bipolar Transistor,<br />
as a 600mA Load Supply Switch. (Note 1).
Change language