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PL2576-12F5 Datasheet(PDF) 9 Page - Cystech Electonics Corp. |
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PL2576-12F5 Datasheet(HTML) 9 Page - Cystech Electonics Corp. |
9 / 10 page CYStech Electronics Corp. Spec. No. : C543F5 Issued Date : 2004.02.27 Revised Date : Page No. : 9/10 PL2576-XXXF5 CYStek Product Specification Test Circuit and Layout Guidelines As in any switching regulator, layout is very important. Rapidly switching currents associated with wiring inductance generate voltage transients which can cause problems. For minimal inductance and ground loops, the length of the leads indicated by heavy lines should be kept as short as possible. Single-point grounding (as indicated) or ground plane construction should be used for best results. When using the Adjustable version, physically locate the programming resistors near the regulator, to keep the sensitive feedback wiring short. + Cin D1 L1 + Cout Vin Unregulated DC Input PL2576 GND 3 +Vin Feedback 4 2 Output 5 ON / OFF 100μF MBR360 100μH 1000μF Fixed Output L O A D 1 Vout Cin--100μF, 75V, Aluminum Electrolytic Cout--1000μF, 25V, Aluminum Electrolytic L1--100μH, Pulse Eng, PE92108 D1--Schottky, MBR360 R1--2k, 0.1% R2--6.12k, 0.1% + Cin D1 L1 + Cout 7V-40V Unregulated DC Input PL2576-ADJ GND 3 +Vin Feedback 4 2 Output 5 ON / OFF 100μF MBR360 100μH 1000μF L O A D 1 Vout R2 R1 5.00V Adjustable Output Voltage Version Fixed Output Voltage Versions Vout=VREF(1+ R2=R1( where VREF=1.23V, R1 between 1k and 5k Figure 2 R2 R1 ) Vout VREF -1) |
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