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SR036MG Datasheet(PDF) 9 Page - Supertex, Inc |
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SR036MG Datasheet(HTML) 9 Page - Supertex, Inc |
9 / 18 page 9 SR036/SR037 B092005 Applications Information, continued 220µF 1.0µF SR036 or SR037 GN2470 VUNREG HV IN GND Gate Source V OUT VREG Fuse 120VAC or 230VAC Figure 2: Example Circuit with Enable Control 1K Ω TN2106K1 ON/OFF 1.0µF Figure 3: Generating Two Regulated Voltages 220µF 1.0µF SR036 GN2470 1.0µF 1.0M Ω Vz 5.6V Vout1 = 5.0V Vout2 = 3.3V 10K Ω 120VAC or 230VAC Fuse 2N3904 HV IN GND Gate Source V OUT 1.0µF Figure 2 is an example circuit using the SR036 or SR037 along with a Supertex GN2470 IGBT to generate an unregulated voltage of approximately 18V and a regulated voltage of 3.3V for the SR036 or 5.0V for the SR037. The combined total output current is typically 50mA. The TN2106K1 in series with a 1Ký resistor can be added for applications requiring an enable control. For applications requiring two regulated voltages, an inexpen- sive discrete linear regulator can be added to regulate the unregulated output as show in Figure 3. The discrete linear regulator consists of a Zener diode, a resistor and a bipolar transistor. The regulated voltage, Vout1, is determined by the Zener diode voltage minus the base-to-emitter voltage drop of 0.6V. Figure 3 uses a 5.6V Zener diode to obtain a 5.0V output. Different Zener diode voltages can be used to obtain different regulated output voltages. |
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